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Kinetic Approach by Photocurrent Measurements to the Photoelectrocatalytic Oxidation of an Anionic Surfactant Using an S,N-TiO 2 /Ti Electrode: Distinguishing Between Direct and Indirect Mechanisms Top. Catal. (IF 2.406) Pub Date : 2021-01-08 M. I. Jaramillo-Gutiérrez, J. S. Velasco-Rueda, J. A. Pedraza-Avella
The photoelectrocatalytic oxidation of an anionic surfactant (internal olefin sulfonate C20-C24, IOS) in synthetic oilfield wastewater was investigated by photocurrent measurements using a sulfur and nitrogen co-doped titanium dioxide electrode (S,N-TiO2/Ti). For the electrode preparation, S,N-TiO2 films were supported on Ti expanded meshes by sol–gel dip-coating, followed by thermal treatment at 400 °C
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Tailoring the Physicochemical Properties of Mg Promoted Catalysts via One Pot Non-ionic Surfactant Assisted Co-precipitation Route for CO 2 Co-feeding Syngas to Methanol Top. Catal. (IF 2.406) Pub Date : 2021-01-06 Komal Tripathi, Rajan Singh, Kamal Kishore Pant
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Correction to: Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites Top. Catal. (IF 2.406) Pub Date : 2021-01-02 Yulong Shan, Yu Sun, Yaobin Li, Xiaoyan Shi, Wenpo Shan, Yunbo Yu, Hong He
The original version of this article unfortunately contained an error. The authors would like to correct the error with this erratum.
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Effect of Modified Nanoclay Surface Supported Nickel Catalyst on Carbon Dioxide Reforming of Methane Top. Catal. (IF 2.406) Pub Date : 2021-01-02 Juthasiri Chaisamphao, Sirapassorn Kiatphuengporn, Kajornsak Faungnawakij, Waleeporn Donphai, Metta Chareonpanich
The activity and stability of modified nanoclays surface supported nickel (Ni/NC-x) catalyst were investigated and compared to unmodified nanoclay surface supported nickel (Ni/NC) catalyst in dry reforming reaction (500–800 °C). The nickel metal was loaded on modified nanoclay surface with different alkylammonium modifiers—trimethylstearyl ammonium (NC-T), methyl dihydroxy-ethyl hydrogenated tallow
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A Novel Carbon-Resistant Perovskite Catalyst for Hydrogen Production Using Methane Dry Reforming Top. Catal. (IF 2.406) Pub Date : 2021-01-02 Feraih Alenazey, Bandar AlOtaibi, Raja A. L. Otaibi, Yousef Alyousef, Salma Alqahtania, Amjad Qazaq, Umer Zahid, Dai-Viet N. Vo, Adesoji Adesina
The aim of this study was to evaluate a perovskite catalyst for use as a carbon-resistant catalyst in methane dry reforming. The oxygen-rich ABO3+δ (CeCoxNi1-xO3+δ) perovskite was selected for this investigation due to its crystalline nature and ability to accommodate a wide range of cations; perovskites notably possess catalytically advantageous oxidation and reduction properties. The perovskite catalysts
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Artificial Neural Network Modeling of Thermo-catalytic Methane Decomposition for Hydrogen Production Top. Catal. (IF 2.406) Pub Date : 2021-01-02 May Ali Alsaffar, Mohamed Abdel Rahman Abdel Ghany, Jamal Manee Ali, Bamidele Victor Ayodele, Siti Indati Mustapa
Thermo-catalytic methane decomposition is a prospective route for producing COx free hydrogen. In this study, Bayesian regularization and Levenberg-Marquardt trained multilayer perceptron neural networks were employed in predictive modeling of hydrogen production by thermo-catalytic methane decomposition. Based on the non-linear relationship between the reaction temperature, weight of the catalysts
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A Short Review of Recent Advances in Direct CO 2 Hydrogenation to Alcohols Top. Catal. (IF 2.406) Pub Date : 2021-01-01 Shunan Zhang, Zhaoxuan Wu, Xiufang Liu, Kaimin Hua, Zilong Shao, Baiyin Wei, Chaojie Huang, Hui Wang, Yuhan Sun
The continuous increase in anthropogenic carbon dioxide (CO2) emission resulting in global climate change has been of great concern in the past decades. With the renewable hydrogen resource being more realistic, the transformation of CO2 with hydrogen into value-added chemicals becomes a promising route to address the environment and climate issues. The chemical synthesis of alcohols which serve as
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Correction to: Toward Concurrent Engineering of the M1-Based Catalytic Systems for Oxidative Dehydrogenation (ODH) of Alkanes Top. Catal. (IF 2.406) Pub Date : 2020-12-05 Anne M. Gaffney, Qi An, William A. Goddard, Weijian Diao, Michael V. Glazoff
The original version of this article unfortunately contained an error. The authors would like to correct the error with this erratum.
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Quasielastic Neutron Scattering and Molecular Dynamics Simulation Study on the Molecular Behaviour of Catechol in Zeolite Beta Top. Catal. (IF 2.406) Pub Date : 2020-12-01 Carlos Hernandez-Tamargo, Ian P. Silverwood, Alexander J. O’Malley, Nora H. de Leeuw
The dynamics of catechol in zeolite Beta was studied using quesielastic neutron scattering (QENS) experiments and molecular dynamics simulations at 393 K, to understand the behaviour of phenolic monomers relevant in the catalytic conversion of lignin via metal nanoparticles supported on zeolites. Compared to previous work studying phenol, both methods observe that the presence of the second OH group
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Radial Basis Function Neural Network Model Prediction of Thermo-catalytic Carbon Dioxide Oxidative Coupling of Methane to C 2 -hydrocarbon Top. Catal. (IF 2.406) Pub Date : 2020-11-28 Bamidele Victor Ayodele, Siti Indati Mustapa, Thongthai Witoon, Ramesh Kanthasamy, Mohammed Zwawi, Chiedu N. Owabor
Various anthropogenic activities often result in the emission of carbon dioxide (CO2), which is one of the principal components of greenhouse gases responsible for greenhouse effect. One vital strategy to mitigate the effect of the released CO2 on the environment is through sustainable utilization and conversion to value-added chemicals. This study employs the Radial Basis Function artificial neural
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Quo Vadis Micro-Electro-Mechanical Systems for the Study of Heterogeneous Catalysts Inside the Electron Microscope? Top. Catal. (IF 2.406) Pub Date : 2020-11-17 Maxime Boniface, Milivoj Plodinec, Robert Schlögl, Thomas Lunkenbein
During the last decade, modern micro-electro-mechanical systems (MEMS) technology has been used to create cells that can act as catalytic nanoreactors and fit into the sample holders of transmission electron microscopes. These nanoreactors can maintain atmospheric or higher pressures inside the cells as they seal gases or liquids from the vacuum of the TEM column and can reach temperatures exceeding
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Photocatalytic hydrogen production using FeTiO 3 concentrates modified by high energy ball milling and the presence of Mg precursors Top. Catal. (IF 2.406) Pub Date : 2020-11-02 Diana M. Cañas-Martínez, Sandra Cipagauta-Díaz, Milton Manrique, Ricardo Gómez, Julio A. Pedraza-Avella
Ilmenite (FeTiO3) concentrates were modified by high energy ball milling (HEBM) at different times (1, 2, and 3 h) and in the presence of MgO or metallic Mg at different contents (0.5, 1.0, and 3.0 wt%), with the aim of obtaining a low-cost and highly available photocatalyst with enhanced performance towards H2 production. FeTiO3 concentrates were obtained from ilmenite-rich black sand by gravimetric
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Oxygen Adsorption, Subsurface Oxygen Layer Formation and Reaction with Hydrogen on Surfaces of a Pt–Rh Alloy Nanocrystal Top. Catal. (IF 2.406) Pub Date : 2020-10-29 Sylwia Owczarek, Sten V. Lambeets, Robert Bryl, Cédric Barroo, Olivier Croquet, Leszek Markowski, Thierry Visart de Bocarmé
The oxygen adsorption and its catalytic reaction with hydrogen on Pt–Rh single crystals were studied at the nanoscale by Field Emission Microscopy (FEM) and Field Ion Microscopy (FIM) techniques at 700 K. Both FEM and FIM use samples prepared as sharp tips, apexes of which mimic a single nanoparticle of catalyst considering their similar size and morphology. Oxygen adsorption on Pt-17.4 at.%Rh samples
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Investigations of Hydrocarbon Species on Solid Catalysts by Inelastic Neutron Scattering Top. Catal. (IF 2.406) Pub Date : 2020-10-26 Longfei Lin, Qingqing Mei, Xue Han, Stewart F. Parker, Sihai Yang
The status of surface species on solid catalysts during heterogeneous catalysis is often mysterious. Investigations of these surface species are crucial to deconvolute the reaction network and design more efficient catalysts. Vibrational spectroscopy is a powerful technique to study the interactions between surface species and the catalysts and infrared (IR) and Raman spectroscopies have been widely
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Ag 2 O–Al 2 O 3 –ZrO 2 Trimetallic Nanocatalyst for High Performance Photodegradation of Nicosulfuron Herbicide Top. Catal. (IF 2.406) Pub Date : 2020-10-22 Sangeeta Bhogal, Gaurav Sharma, Amit Kumar, Shweta Sharma, Mu. Naushad, Manawwer Alam, Florian J. Stadler
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Identifying Trends in the Field Ionization of Diatomic Molecules over Adsorbate Covered Pd(331) Surfaces Top. Catal. (IF 2.406) Pub Date : 2020-10-19 Alyssa J. R. Hensley, Ian deJoode, Yong Wang, Jean-Sabin McEwen
Capturing the dynamic fluctuations in structure and adsorbate coverage on catalytic surfaces under operating conditions is of critical importance to the identification of active sites and subsequent design of materials for targeted bond activation but remains challenging to achieve both experimentally and computationally. Field ion microscopy achieves such in situ reaction monitoring on single catalytic
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Optimization of Supports in Bifunctional Supported Pt Catalysts for Polystyrene Hydrocracking to Liquid Fuels Top. Catal. (IF 2.406) Pub Date : 2020-10-19 M. Pilar González-Marcos, Edwin G. Fuentes-Ordóñez, Joseba A. Salbidegoitia, Juan R. González-Velasco
A series of bifunctional platinum catalysts were prepared, supported on alumina or different zeolites, some of which were submitted to either desilication or dealumination in order to modify their acidic properties. The catalysts were characterized for their structural and textural properties, their acidic properties, including distribution of acid strength and Brønsted and Lewis acidity, their metallic
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Effect of Bismuth Dopant on the Photocatalytic Properties of SrTiO 3 Under Solar Irradiation Top. Catal. (IF 2.406) Pub Date : 2020-10-17 Carlos Rodriguez Garcia, Jorge Oliva, David Chávez, Briseida Esquivel, Christian Gómez-Solís, Erika Martínez-Sánchez, Arturo Isaias Mtz-Enriquez
This work presents the structural, morphological and photocatalytic properties of pure SrTiO3 (STO) and Bismuth doped STO. Several Bi doped samples were synthesized using Bi concentrations from 0.5 to 5 mol% and the sol-gel method. According to the X-ray diffraction analysis, all the samples presented cubic phase. The Scanning electron microscopy (SEM) showed that the samples without dopant or with
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Assessment of the Use of NaClO as an Alternative to H 2 O 2 in the Oxidant-Titanium Ore-Simulated Solar Light System for Thiabendazole Degradation Top. Catal. (IF 2.406) Pub Date : 2020-10-17 Melisa Portilla-Sangabriel, Sandra Arzate, José-Alberto Macías-Vargas, Rosa-María Ramírez-Zamora
The use of the magnetic fraction (MF) of a low-grade titanium ore (TO) and two oxidants (H2O2 and NaClO), testing each one separately, were compared in photo-Fenton like systems to degrade thiabendazole (TBZ) as a model micropollutant. As far as the author’s knowledge goes, this work presents for the first time the assessment of NaClO as an alternative to H2O2 in heterogeneous systems, where the Fenton-type
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Chiral Surface Characterisation and Reactivity Toward H–D Exchange of a Curved Platinum Crystal Top. Catal. (IF 2.406) Pub Date : 2020-10-11 Tycho Roorda, Sabine V. Auras, Ludo B. F. Juurlink
Understanding heterogeneous catalysis at the atomic level requires detailed knowledge of the reactivity of different surface sites toward specific bond breaking and bond making events. We illustrate a new method in such investigations. We use a macroscopically curved Pt single crystal containing a large variation in density of highly kinked steps of two different chiralities. Scanning tunneling microscopy
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Photoreactivity of Deep VB Titania Attained Via Molecular Layer Deposition; Interplay of Metal Oxide Thin Film Built-in Strain and Molecular Effects Top. Catal. (IF 2.406) Pub Date : 2020-10-10 Swetha Jayanthi, Debabrata Sarkar, Dereje Hailu Taffa, Roie Yerushalmi
Calcination of hybrid organic–inorganic Titanium-Ethylene Glycol (Ti-EG) thin films yield non-stoichiometric titania with deep valence band maximum (VBM) with down-shift of up to 450 meV relative to stoichiometric TiO2. We previously reported the enhanced photocatalytic (PC) reactivity of these materials by demonstrating direct photocatalytic production of H2O2 and high degradation rates of organic
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Recent Advances in the Understanding of Boron-Containing Catalysts for the Selective Oxidation of Alkanes to Olefins Top. Catal. (IF 2.406) Pub Date : 2020-10-07 William P. McDermott, Melissa C. Cendejas, Ive Hermans
The production of ethylene and propylene through aerobic alkane oxidation without significant coproduction of CO and CO2 (COx) presents a challenge to academic and industrial researchers alike. Recently, boron-containing materials such as hexagonal boron nitride (hBN) have been identified as active and selective catalysts for the oxidative dehydrogenation (ODH) of propane to propylene with minimal
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A Numerical Investigation of the Combined Effects of Initial Temperature and Catalyst Activity on the Dynamics of Soot Combustion in a Catalytic Diesel Particulate Filter Top. Catal. (IF 2.406) Pub Date : 2020-10-07 Gianluca Landi, Valeria Di Sarli, Luciana Lisi
In the work presented in this paper, the combined effects of initial temperature and catalyst activity on the regeneration dynamics of a catalytic diesel particulate filter (DPF) have been investigated. To this end, CFD-based simulations of soot combustion in a single-channel configuration were performed. In the model, all the soot trapped inside the filter was assumed to be in contact with the catalyst
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Towards Experimental Handbooks in Catalysis Top. Catal. (IF 2.406) Pub Date : 2020-10-06 Annette Trunschke, Giulia Bellini, Maxime Boniface, Spencer J. Carey, Jinhu Dong, Ezgi Erdem, Lucas Foppa, Wiebke Frandsen, Michael Geske, Luca M. Ghiringhelli, Frank Girgsdies, Rania Hanna, Maike Hashagen, Michael Hävecker, Gregory Huff, Axel Knop-Gericke, Gregor Koch, Peter Kraus, Jutta Kröhnert, Pierre Kube, Stephen Lohr, Thomas Lunkenbein, Liudmyla Masliuk, Raoul Naumann d’Alnoncourt, Toyin Omojola
The “Seven Pillars” of oxidation catalysis proposed by Robert K. Grasselli represent an early example of phenomenological descriptors in the field of heterogeneous catalysis. Major advances in the theoretical description of catalytic reactions have been achieved in recent years and new catalysts are predicted today by using computational methods. To tackle the immense complexity of high-performance
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Synergy Between Ceria and Metals (Ag or Cu) in Catalytic Diesel Particulate Filters: Effect of the Metal Content and of the Preparation Method on the Regeneration Performance Top. Catal. (IF 2.406) Pub Date : 2020-09-30 Valeria Di Sarli, Gianluca Landi, Almerinda Di Benedetto, Luciana Lisi
The catalytic performance in soot oxidation of lab-scale silicon carbide (SiC) diesel particulate filters (DPFs) washcoated with metal-promoted CeO2 has been investigated focusing on the amount and the nature of the metal (Ag or Cu), and on the preparation method for the catalytic washcoat deposition. A wide range of metal loads was explored. The metal-promoted washcoat was dispersed onto the filters
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Preparation of Polyaniline Microtubes as the Gold Catalyst Support with Improved Catalytic Performances for the Reduction of Nitrophenols Top. Catal. (IF 2.406) Pub Date : 2020-09-30 Libo Sun, Lin Jiang, Jie Zhang, Toru Murayama, Miao Zhang, Yuhua Zheng, Huijuan Su, Caixia Qi
Polyaniline (PANI) microtubes supported Au catalysts were prepared and evaluated in the catalytic reduction of nitrophenols to aminophenols with NaBH4 as the reductant. PANI microtubes were prepared through a template-free method with salicylic acid as the dopant. HAuCl4 was used as a gold precursor. Au nanoparticles were loaded on PANI microtubes by an in situ redox reaction between PANI and HAuCl4
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Photocatalytic Degradation of Mixed Dyes in Aqueous Phase by MgAlTi and ZnAlTi Mixed Oxides Top. Catal. (IF 2.406) Pub Date : 2020-09-29 Laura V. Castro, E. Ortíz-Islas, Ma. E. Manríquez, E. Albiter, Román Cabrera-Sierra, B. Alvarado-Zavala
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Elimination of Thiophenic Compounds by Cycloaddition with Ethylene for an Efficient Purification of Fuels: A DFT Study Top. Catal. (IF 2.406) Pub Date : 2020-09-28 Wilfried G. Kanhounnon, Frédéric Richard, Gaston A. Kpotin, Simplice Koudjina, Urbain A. Kuevi, Guy S. Atohoun, Michael Badawi
Using DFT calculations, we have investigated the cycloaddition of thiophene with ethylene, followed by desulfurization of the produced heterobicyclic molecules at 373 K. The whole reaction process has been modeled in three steps: (i) the molecule adsorption on tungsten sulfide acting as a catalyst, (ii) the cycloaddition of the adsorbed molecule with ethylene, (iii) the elimination of the sulfur atom
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Transition Metal (Ni, Cu and Fe) Substituted Co 3 O 4 – ZrO 2 Catalysts for Lean Methane Combustion Top. Catal. (IF 2.406) Pub Date : 2020-09-28 Satyapaul A. Singh, Giridhar Madras, Inkollu Sreedhar
Transition metal (Ni, Cu and Fe) substituted Co3O4–ZrO2 catalysts (NiCZ, CuCZ and FeCZ, respectively) were synthesized by PEG assisted sonochemical synthesis and tested for lean methane combustion. These catalysts offered complete combustion of methane by generating CO2 and steam as products. The strong metal-support interaction (SMSI) allowed the high catalytic activity at temperatures below 600 °C
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New Quantum Mechanics Based Methods for Multiscale Simulations with Applications to Reaction Mechanisms for Electrocatalysis Top. Catal. (IF 2.406) Pub Date : 2020-09-28 William A. Goddard
Electrocatalysis may provide the solution to some of the most important energy and environmental problems facing society: converting solar energy during the day to fuel (H2) that can provide power at night (hydrogen fuel cells) through water splitting, ·reducing the CO2 in the atmosphere to valuable chemicals (methane, ethylene, ethanol). However significant improvements must be made in the selectivity
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Gold Nanoparticles Supported on Ce–Zr Oxides for Selective Hydrogenation of Acetylene Top. Catal. (IF 2.406) Pub Date : 2020-09-28 Xiaoyue Hua, Yuhua Zheng, Zixuan Yang, Libo Sun, Huijuan Su, Toru Murayama, Caixia Qi
Gold nanocatalysts have been reported to be active in the selective hydrogenation of acetylene. In this paper, a series of Au/Ce1−xZrxO2 (x = 0.03 to 0.5) supported catalysts with different ratios of Ce to Zr were prepared and their catalytic performance for selective hydrogenation of acetylene was investigated. The structure and surface defects of the catalyst can be changed by altering the amount
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Bimetallic Pd-Bi/C Catalysts Prepared by Grafting of Complexes with O-Donor Ligands Top. Catal. (IF 2.406) Pub Date : 2020-09-25 Chantal Diverchy, Vincent Dubois, Michel Devillers, Sophie Hermans
Bimetallic carbon-supported PdBi catalysts were prepared by grafting. To do so a soluble complex of bismuth with exchangeable O-donor ligands was selected, and the carbon support was functionalized to increase the number of surface functions. The grafting procedure was carried out by contacting the various supports with solutions of Pd and/or Bi complexes, to allow ligand exchange reactions to take
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C, N Co-Decorated Alumina-Supported Au Nanoparticles : Enhanced Catalytic Performance for Selective Hydrogenation of Acetylene Top. Catal. (IF 2.406) Pub Date : 2020-09-22 Yuan Zhang, Xun Sun, Yali Zhao, Huijuan Su, Toru Murayama, Caixia Qi
The modifications of support for the dispersion and immobilization of gold nanoparticles were examined for the selective hydrogenation of acetylene to ethylene. The catalyst, denoted as Au/CNA, was prepared by the carbonization of C and N atom-containing organic precursors on Al2O3, which were subsequently used as supports for gold nanoparticles. The TOF value of Au/CNA was five times higher than that
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Correction to: Reactivity and Stability of Ultrathin VO x Films on Pt(111) in Catalytic Methanol Oxidation Top. Catal. (IF 2.406) Pub Date : 2020-09-21 Bernhard von Boehn, Lena Scholtz, Ronald Imbihl
The original version of this article unfortunately contained an error. The authors would like to correct the error with this erratum.
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Nanoscale Perspectives of Metal Degradation via In Situ Atom Probe Tomography Top. Catal. (IF 2.406) Pub Date : 2020-09-21 Sten V. Lambeets, Elizabeth J. Kautz, Mark G. Wirth, Graham J. Orren, Arun Devaraj, Daniel E. Perea
We report a unique in situ instrument development effort dedicated to studying gas/solid interactions relevant to heterogeneous catalysis and early stages of oxidation of materials via atom probe tomography and microscopy (APM). An in situ reactor cell, similar in concept to other reports, has been developed to expose nanoscale volumes of material to reactive gas environments, in which temperature
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Synthesis of Tri-S-Triazine Based g-C 3 N 4 Photocatalyst for Cationic Rhodamine B Degradation under Visible Light Top. Catal. (IF 2.406) Pub Date : 2020-09-19 Tanaporn Narkbuakaew, Pornapa Sujaridworakun
In this research, graphitic carbon nitride (g-C3N4) photocatalysts were synthesized through a simple calcination process at various temperatures, which were 400, 500, 550, and 600 °C, by using low-cost urea as a precursor. The obtained g-C3N4 samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), Brunauer–Emmett–Teller
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Synthesis of Ag 2 O Coated TiO 2 Nanoparticles by Sonochemically Activated Methods for Enhanced Photocatalytic Activities Top. Catal. (IF 2.406) Pub Date : 2020-09-15 Anjali Athawale, Anuja Bokare, Hema Singh, Van-Huy Nguyen, Dai-Viet N. Vo, Deepak Kumar, Ajit Sharma
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Revisiting the Evolution of IR Spectra of CO Adsorbed on Au Nanoparticles Supported on Non-reducible Supports Top. Catal. (IF 2.406) Pub Date : 2020-09-13 Ranin Atwi, Taha Elgayyar, Francisco J. Cadete Santos Aires, Alain Tuel, Frederic C. Meunier
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Preparation, Characterization and Catalytic Activity in 2-Propanol Conversion of Potassium and Antimony Mixed Oxides Top. Catal. (IF 2.406) Pub Date : 2020-09-13 A. Aitlaalim, F. Ouanji, A. Benzaouak, M. Kacimi, M. Ziyad, L. F. Liotta
Potassium and antimony mixed oxides were obtained by calcination of the commercial potassium-antimony tartrate trihydrate K(SbO)C4H4O6.3H2O at temperatures ranging from 300 to 800 °C. The structure varied with temperature as revealed by XRD characterization. The modifications occurring during the calcination process were also studied by FT-IR and DRS spectroscopies, along with by thermal analysis (TG/DTG)
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Development of g-C 3 N 4 /BiVO 4 Binary Component Heterojunction as an Advanced Visible Light-Responded Photocatalyst for Polluted Antibiotics Degradation Top. Catal. (IF 2.406) Pub Date : 2020-09-08 Nguyen Le Minh Tri, Nguyen Thi Dieu Cam, Hai Dinh Pham, Doan Van Thuan, Thanh-Dong Pham, Van Tang Nguyen, Nguyen Tien Trung, Mai Hung Thanh Tung, Tran Thi Thu Phuong, Thi Thu Phuong Nguyen, Cao Van Hoang, Van Duong Dao
g-C3N4/BiVO4, binary component heterojunction materials, were successfully synthesized for novel photocatalytic tetracycline (TC) decomposition. In the prepared binary component heterojunction, BiVO4 was well distributed on g-C3N4 layer. In addition, BiVO4 and g-C3N4 was intimately contacted. Both BiVO4 and g-C3N4, which band gap energies were approximately 2.46 and 2.71 eV, respectively, would also
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The Effect of Potassium on TiO 2 Supported Bimetallic Cobalt–Iron Catalysts Top. Catal. (IF 2.406) Pub Date : 2020-09-05 Marco Russo, Valeria La Parola, Giuseppe Pantaleo, Maria Luisa Testa, Ankur Bordoloi, Rishi Kumar Gupta, Rajaram Bal, Anna Maria Venezia
The effect of potassium addition on Fischer–Tropsch catalysts containing 10 wt% cobalt and 2 wt% iron supported on pure TiO2 was studied using a continuous flow reactor at atmospheric pressure, a syngas feed with H2/CO = 1.7 and GHSVsyngas = 1944 mLsyngas gcat−1 h−1. The FTS reaction was performed in a range of temperature 275–350 °C. Differences in textural, structural, chemical and redox properties
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Surface Reconstruction of Ag and Au–Ag Model Nano-catalysts During Exposure to Oxidising Gas Atmospheres Top. Catal. (IF 2.406) Pub Date : 2020-09-04 Luc Jacobs, Cédric Barroo, Thierry Visart de Bocarmé
At the industrial level, Ag catalysts in the form of silver crystals held by a silver gauze are largely used for formaldehyde production and ethylene epoxidation. These self-supported structures undergo surface reconstructions and morphological changes upon exposure to moderately high temperatures (473–900 K) and oxidising atmospheres. These phenomena have been studied and well understood on single
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Enhanced Photocatalytic Degradation of MB Under Visible Light Using the Modified MIL-53(Fe) Top. Catal. (IF 2.406) Pub Date : 2020-09-03 Tran Thuong Quang, Nguyen Xuan Truong, Tran Hong Minh, Nguyen Ngoc Tue, Giang Thi Phuong Ly
In this report, we focus on the modification of iron terephthalate metal–organic framework (MIL-53(Fe)) by soaking in H2O2 solution and its mechanism. The structure of MIL-53(Fe) before and after the modification were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and N2 adsorption–desorption isotherms. The XRD results showed that the material structure
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Layered Nanocomposite 2D-TiO 2 with Cu 2 O Nanoparticles as an Efficient Photocatalyst for 4-Chlorophenol Degradation and Hydrogen Evolution Top. Catal. (IF 2.406) Pub Date : 2020-09-01 Matías Alegría, Juan Aliaga, Luis Ballesteros, Clivia Sotomayor-Torres, Guillermo González, Eglantina Benavente
New composites formed by layered hybrid TiO2(stearic acid) (LHTiO2) and, Cu2O nanoparticles were studied as photocatalysts that extend the response range to light visible for the evolution of hydrogen and the degradation of 4-chlorophenol. The results revealed that LHTiO2/Cu2O exhibited a clearly improved photocatalytic degradation, about 5.6 times faster than pristine TiO2, and hydrogen evolution
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Photocatalytic Degradation of Phenol and Methyl Orange with Titania-Based Photocatalysts Synthesized by Various Methods in Comparison with ZnO–Graphene Oxide Composite Top. Catal. (IF 2.406) Pub Date : 2020-08-31 Trung Hieu Nguyen, Anh Tuan Vu, Van Han Dang, Jeffrey Chi-Sheng Wu, Minh Thang Le
Photocatalysis is one of the effective methods to treat wastewater and degrade pollutants. Titania (TiO2) is usually chosen based on its superior properties and its high performance as reported in many publications. However, the properties of TiO2 may be influenced by the synthesis method. In this work, several methods were applied to synthesize TiO2, and its modified form (composite with graphene
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Characterization and Evaluation of Copper Slag as a Bifunctional Photocatalyst for Alcohols Degradation and Hydrogen Production Top. Catal. (IF 2.406) Pub Date : 2020-08-30 Claudia Victoria Montoya-Bautista, Próspero Acevedo-Peña, Rodolfo Zanella, Rosa-María Ramírez-Zamora
With the goal of providing an economically viable method for reducing water pollution and health impact by the mezcal industry wastes, photocatalytic degradation of toxic alcohols using copper slag (CS) was evaluated, investigating the possibility for a concurrent hydrogen production. CS was characterized extensively by XRD, XRF, SEM–EDS, UV–Vis and electrochemical techniques to evaluate its properties
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Correction to: Use of Amount-of-Substance Terminology and Equations in Field Desorption Theory Top. Catal. (IF 2.406) Pub Date : 2020-08-28 Richard G. Forbes
The original version of this article unfortunately contained an error. The author would like to correct the error with this erratum. In the third sentence of the fifth paragraph, the symbol N was erroneously included. The correct version of this sentence should read:
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Synthesis and Photocatalytic Activity of Ni–Fe Layered Double Hydroxide Modified Sulphur Doped Graphitic Carbon Nitride (SGCN/Ni–Fe LDH) Photocatalyst for 2,4-Dinitrophenol Degradation Top. Catal. (IF 2.406) Pub Date : 2020-08-25 Vasudha Hasija, Pankaj Raizada, Ahmad Hosseini-Bandegharaei, Pardeep Singh, Van-Huy Nguyen
In this work, visible light-active sulphur doped graphitic carbon nitride coupled with Ni–Fe layered double hydroxide (SGCN/Ni–Fe LDH) was prepared through co-precipitation procedure using commercially available thiourea, nickel nitrate, and ferric nitrate. The surface morphology characterization showed LDH crystallite growth onto the surface of SGCN, exploiting the delocalized π-electrons of graphitic
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Field-Induced Chemistry in Catalysis: High Pressure and High Fields Top. Catal. (IF 2.406) Pub Date : 2020-08-25 H. J. Kreuzer
High electrostatic fields of cations in zeolites and other catalysts is shown to modify the elctronic level struture of molecules. As an example, nitrogen molecules become nitrogen oxide like. It is argued that this is relevant for the Haber–Bosch synthesis. It is also pointed out that fields of the order of volts per Angstrom are equivalent to pressures of GigaPascals.
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Selective Photo-epoxidation of (R)-(+)- and (S)-(−)-Limonene by Chiral and Non-Chiral Dioxo-Mo (VI) Complexes Anchored on TiO 2 -Nanotubes Top. Catal. (IF 2.406) Pub Date : 2020-08-19 Henry Martínez Q., Edgar A. Paez-Mozo, Fernando Martínez O.
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Energy-Guided Shape Control Towards Highly Active CeO 2 Top. Catal. (IF 2.406) Pub Date : 2020-08-18 Jingxia Yang, Huihui Ding, Jinjie Wang, Nevzat Yigit, Jingli Xu, Günther Rupprechter, Min Zhang, Zhiquan Li
The shape of nanosized CeO2, obtained via polyvinylpyrrolidone (PVP) micelles, was controlled by microwave (MW)-aided synthesis combined with different combinations of energy input/transfer, including ultrasound (US), ultraviolet (UV) and pressure (P). Whereas ceria nanoflakes resulted from standard solvothermal synthesis, CeO2 nanoparticles were obtained from MW, MW + US and MW + UV. New CeO2 “nanospindles”
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Water Disinfection Using Chitosan Microbeads With N-, C-, C-N/TiO 2 By Photocatalysis Under Visible Light Top. Catal. (IF 2.406) Pub Date : 2020-08-17 Cinthia G. Aba Guevara, René Sanjuan Galindo, Miguel Angel Gracia Pinilla, Daniela Xulú Martínez Vargas, Norma Alicia Ramos Delgado
Chitosan microbeads with C-doped TiO2, N-doped TiO2 and C,N-codoped TiO2 were prepared to obtain photocatalysts with higher photocatalytic efficiency, active under visible light and easy to removed from aqueous medium. TiO2 powders were synthesized by the sol–gel method and modified using glucose and ammonium nitrate as source of C and N, respectively. Scanning electron microscope (SEM), X-ray diffraction
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Smart Surfaces: Heterogeneous Photo-Catalysis on TiO 2 Based Coatings for De-pollution Purposes in Indoor and Outdoor Environments Top. Catal. (IF 2.406) Pub Date : 2020-08-17 Dimitrios Kotzias, Vassilios Binas, George Kiriakidis
Heterogeneous photocatalysis using semiconductors, e.g. TiO2 as photocatalyst is a promising technology for the degradation of environmental pollutants. Preliminary evidence indicates that TiO2 containing construction materials and paints efficiently destroy the ozone precursors NO and NO2 up to 80% and 30% respectively. The materials and paints containing TiO2 developed so far are mostly for outdoor
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Formaldehyde Oxidation on Pd/TiO 2 Catalysts at Room Temperature: The Effects of Surface Oxygen Vacancies Top. Catal. (IF 2.406) Pub Date : 2020-08-13 Yaobin Li, Chunying Wang, Changbin Zhang, Hong He
High reduction temperature generally induces the agglomeration of supported noble metals. Howerve, we found that high temperature reduction did not induce Pd particles sintering but improved Pd dispersion. Multiple methods were further carried out to illuminate the abnormal phenomenon. The results indicated more surface oxygen defects and diffusion of Pd particles were simultaneously induced by high
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Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites Top. Catal. (IF 2.406) Pub Date : 2020-08-08 Yulong Shan, Yu Sun, Yaobin Li, Xiaoyan Shi, Wenpo Shan, Yunbo Yu, Hong He
Pd-based small-pore zeolites with different framework structures (AEI, CHA and RTH) were synthesized by a facile incipient wetness impregnation method. The zeolites were utilized as low-temperature passive NOx adsorbers (PNA) for NOx storage before and after hydrothermal aging. It was found that 1 wt% Pd/AEI showed better PNA behavior than the 1 wt% Pd/CHA and Pd/RTH samples, regardless of hydrothermal
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Combination of Low- and Medium-Temperature Catalysts for the Selective Catalytic Reduction of NO x with NH 3 Top. Catal. (IF 2.406) Pub Date : 2020-08-08 Wenpo Shan, Yang Geng, Yan Zhang, Zhihua Lian, Hong He
In this study, we developed a novel combination model for different types of catalysts, which could generate synergistic effects for the catalysts with different functions. A Mn3CeOx catalyst with good low-temperature activity and a Ce0.1TiOx catalyst with good medium and high temperature activities were selected to make the combination and show synergistic effects. The combination of Ce0.1TiOx–Mn3CeOx
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Synthesis of N and S Co-doped TiO 2 Nanotubes for Advanced Photocatalytic Degradation of Volatile Organic Compounds (VOCs) in Gas Phase Top. Catal. (IF 2.406) Pub Date : 2020-08-07 Le Thi Hoang Yen, Doan Van Thuan, Nguyen Thi Hanh, Nguyen Hoang Thao Vy, Tran Thi My Hang, Hoang Van Ha, Thanh-Dong Pham, Ajit Kumar Sharma, Minh-Viet Nguyen, Nhat-Minh Dang, Nguyen Thi Thanh Truc
In this study, sol–gel combining with hydrothermal methods were successfully used to synthesize N and S co-doped TiO2 nanotubes (N@S-TiO2 NTT) for efficient photocatalytic degradation of volatile organic compounds (VOCs). The obtained characterization results indicated that the synthesized N@S co-doped TiO2 existed as nanotubes. Specific surface areas of these synthesized nanotubes was greatly that
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Preparation of Ni 2 P Supported on Al 2 O 3 and B 2 O 3 Mixed Oxides by Temperature-Programmed Reduction of Phosphate Precursors with Low P/Ni Ratios Top. Catal. (IF 2.406) Pub Date : 2020-08-04 Shuang Chu, Xiang Li, Xuerong Zhou, Roel Prins, Qureshi Waqas, Anjie Wang, Qiang Sheng, Qinglan Hao
Two types of mixed oxides of B2O3 and Al2O3 were prepared. Aluminum borates (ABx, x represents the B/(B + Al) ratio) were prepared by low-temperature thermal decomposition of aluminum nitrate and H3BO3 sustained by the simultaneous oxidation of an organic agent (glycerol), while B2O3-Al2O3 with B/(B + Al) ratio of 0.3 was obtained by incipient wetness impregnation of H3BO3 on a commercial γ-Al2O3 support
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Surface Acidity, Adsorption Capacity, and Photocatalytic Activity of SiO 2 Supported on TiO 2 Nanotubes for Rhodamine B Degradation Top. Catal. (IF 2.406) Pub Date : 2020-08-04 R. Camposeco, S. Castillo, M. Hinojosa-Reyes, Isidro Mejía-Centeno, R. Zanella
The surface acidity, adsorption capacity, and photocatalytic performance of nanotubes (NTs) superficially modified with SiO2 were analyzed. The NTs were prepared by the hydrothermal method. Photocatalysts with 1, 3 and 5 wt% of SiO2 were used to promote the adsorption and efficient removal of rhodamine B (Rh B) from water. The photocatalysts were characterized by SBET, XRD, HR-TEM, Zeta potential,
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Simultaneous Hydrogen Production and Acetic Acid Degradation by Heterogeneous Photocatalysis using a Metallurgical Waste as Catalyst Top. Catal. (IF 2.406) Pub Date : 2020-08-04 Ariadna-Alicia Morales-Pérez, Rosalba García-Pérez, Cynthia-Grisell Tabla-Vázquez, Rosa-María Ramírez-Zamora
This study presents the generation of a renewable fuel using acetic acid as electron donor, copper slag (CS) as photocatalyst and UV–Vis irradiation. The CS was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and UV–Vis spectroscopy. Specific surface area (SBET) was determined on basis of N2 isotherms. A 23 factorial experimental design was performed
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