The work reports an investigation into the role played by the carbon residue from low-quality amorphous carbon nanotubes (aCNTs) and nitrogen doped aCNTs (aNCNTs) in the properties of solgel-synthesized TiO2 and NTiO2. The resutant modified nanohybrids are compared to nitrogen-doped TiO2 where the N is sourced from an ethylenediamine as an organic C and N precursor. The presence of carbon originating

In the course of time, there has been an increased usage of commercial products containing nanoparticles formulated from tin oxide (TNPs), cerium oxide (CNPs), aluminum oxide (ANPs), and zinc oxide (ZNPs). Despite the wide use of metal oxide nanoparticles (MONPs), understanding about their toxicity and mechanism of action are still unclear. In the present study, TNPs, CNPs, ANPs, and ZNPs were produced

Electrical double-layer capacitors (EDLCs) using a biomass-derived activated carbon electrode with Na2SO4–NaI–KI as a redox additive electrolyte were investigated. Biomass-derived activated carbon materials from pomelo peels were prepared by chemical activation in potassium hydroxide followed by carbonization. The biomass-derived activated carbon has a high specific surface area of 1360 m2 g−1, which

Phytochelatins are the main heavy metal detoxifying peptides found in plants. In the present study, Escherichia coli DH5α cells were transformed with the phytochelatin synthase gene from Rhizobium tropici. The tolerance of these recombinant bacterial cells to heavy metals as well as their capacity to synthesize selenium nanoparticles were explored. The functional studies showed the recombinant E. coli

In recent years, nanomaterials with properties such as biocompatibility, high specific surface area, and narrow pore distribution have been extensively studied for the treatment of cancer patients. These materials can be loaded with anti-tumor agents to promote a targeted delivery of drugs, reducing the occurrence of side effects common in conventional treatments. However, the ideal characteristics

Recently, electrochemical supercapacitor has drawn more attention because of its superior electrochemical properties including larger life cycle, higher specific capacitance, and larger specific power. The supercapacitor is also able to fill the energy and power gap between battery and traditional capacitor. The supercapacitor has been considered suitable as an energy storage device for next-generation

Enhancing the efficiency of visible light degradation is important for the actual application of TiO2/SiO2 (Ti/Si) composite materials for waste water treatment. In this manuscript, graphdiyne-doped TiO2/SiO2 (Ti/Si/GDY) (the Ti/Si composite exhibits a spherical shape with a diameter between 200 and 500 nm) composite material was successfully prepared using a hydrothermal method, which was utilized

We employed ReaxFF molecular dynamics (MD) to simulate the physicochemical properties of HMX nanoparticle at low temperatures. As the temperature increases, its physical and chemical properties change accompanying some transition, which is not reported by any previous studies. The Poisson Scoring Model was used to count phase transition. It is found that the number of the β- to δ-HMX conformational

The size of silicon nanowires (SiNWs) plays an important role for their application in nanoelectronic and nanophotonic systems. Therefore, it is of great interest to study the synthesis conditions of SiNWs in order to grow SiNWs with well-controlled manner to be integrated into a device. This paper includes a systematic study of the dependence of diameter and length of the SiNWs on the growth conditions

Silicon nanocrystals (Si-NC) in silicon oxide is a promising material for many applications in micro- and nanoelectronics. This article develops a theory of the kinetics of Si-NC formation when there are both diffusion and reaction mechanisms of their formation. The theoretical expressions obtained for changing the concentration of nanocrystals and silicon implanted in oxide and their sizes are consistent

Bismuth oxyhalide BiOX (X=Cl, Br, I) as a new photocatalyst, its series of BiOX, and composite photocatalyst materials have attracted much attention. In this paper, we used Bi(NO3)3⋅5H2O, NaOH, and WS2 as raw materials to prepare WS2/BiOCl heterojunction composite materials by in situ construction method, and using X-ray diffraction, EDS element mapping, and other analytical means found the crystallization

Electrospun Ti-doped α-Fe2O3 fibres were synthesized and their properties compared with electrospun α-Fe2O3 and TiO2 fibres as reference samples. All samples were characterized with FE SEM (field emission scanning electron microscopy), XRD (X-ray diffraction), 57Fe Mössbauer, FT-IR (Fourier transform infrared) and UV/Vis/NIR (ultraviolet/visible/near infrared) techniques. Ti-doped α-Fe2O3 fibres consisted

We have designed series of monodispersed nanohydrogels (NHGs) with sizes ranging from 20 to 400 nm, generated from mixtures of N-isopropylacrylamide, di-block (hydrophilic-hydrophobic), and tri-block (hydrophobic-hydrophilic-hydrophobic) copolymer acrylamide macro-monomers. When the monomers are mixed at high temperature they collapse into well-defined self-assemblies, which can be further polymerized

We successfully synthesized CuFeS2 nanoparticles (NPs) using a simple synthesis method mediated by touch me not (Mimosa pudica) leaves extract. X-ray diffraction (XRD) was used to analyze the structural properties, and it shows that the CuFeS2 NPs have a tetragonal structure and quasi-pyramidal NPs of an average crystallite size of 31.0 nm with a secondary phase of few minor peaks of covellite (CuS)

In the present work, compact samples of pyrophoric nickel nanopowders with an average particle size of 55 nm obtained by the method of chemical metallurgy were investigated. The possibility of passivation of compact samples 3 mm in diameter made of nickel pyrophoric nanopowders in the air is experimentally shown for the first time. The time of complete passivation is only 3–5 s for a relative sample

Advancing the understanding of stability behavior and aggregation mechanisms of quantum dot (QD) nanoparticles in natural systems is fundamental to elucidate their fate and transport, bioavailability, environmental toxicity, and subsequent risks to environmental and public health. This study investigates the aggregation kinetics and colloidal stability of QDs as a function of pH and organic ligands—acetate

Recently, palladium nanoparticles (Pd-NPs) have been shown to possess pro-inflammatory activities. Herein, we investigated potential in vitro effects of Pd-NPs (primary size of 1–10 nm) on the biology of neutrophils, key player cells in inflammation. Also, the aim of this study was to evaluate the pro-inflammatory activity of Pd-NPs using the murine air pouch model, a model previously proposed to be

Superparamagnetic Fe3O4 nanoparticles have been synthesized using simple and ecofriendly hydrothermal method at supercritical conditions of ethanol. The morphology and crystal structure reveal cubic-like shape with an average size of 63 ± 30 nm and formation of FCC Fe3O4 phase structure. The magnetic properties exhibit superparamagnetic-like behavior at room temperature with saturation magnetization

Size uniformity and defined surface coating are important parameters for the biological properties of silver nanoparticles (AgNPs). Green synthesis uses biomolecules either in pure form or plant extracts as both reductants and stabilizers yielding a wide size range and capping composed of oxidation products and biomolecules present in the reaction mixture. Herein, we used an established methodology

Dental composites are widely used by dentists as restorative material to restore tooth fractures and dental caries or decay. Dental composites often contain advanced nanomaterials. After restoring a tooth, the dentist may use a high-speed handpiece to contour the surface of the composite through the process of drilling, utilizing various dental burs depending on the situation. Additionally, dentists

The influence of the internal structure of inhomogeneous particles on their radiative properties is an open issue repeatedly questioned in many fields of science and technology. The importance of a refined description of the particle composition and structure, going beyond mean-field approximations, is generally recognized. Here, we focus on describing internal inhomogeneities from a statistical point

Cancer is one of the major diseases that threaten human life. Upconversion nanoparticles (UCNPs) are one of the new nanomaterials that are expected to detect and treat cancer. One-step hydrothermal method can synthesize UCNPs with controllable physical and chemical properties and low biotoxicity. In this work, oleic acid (OA) and polyethylene glycol (PEG)–modified NaGdF4/GdF3:Yb,Er UCNPs were synthesized

The 19F nuclear magnetic resonance (NMR) has been widely employed as a detection tool in biological studies due to its low biological background, noninvasiveness, high sensitivity, and real-time monitoring capability. Herein, we report a one-pot synthesis of halloysite nanotubes (HNTs) treated with benzeneboronic acids (6FBB) to afford the HNT-based 19F NMR probe which is capable to detect the H2O2

Polymer-assisted liquid exfoliation of graphite is a promising technique for the scale production of defect-free graphene. In this paper, graphene nanosheets (less than 5 layers, with lateral size about 500–1500 nm) were successfully produced by directly exfoliating graphite in low boiling point chloroform, in the presence of hydrocarbon polymers such as linear paraffin wax and hyperbranched polyethylene

In this study, the first-principles method is used to study the structural stability and electronic properties of GaAs/Ga1−xAlxAs and AlxGa1−xAs/AlyGa1−yAs superlattice nanowires. Calculations show that GaAs/Ga1−xAlxAs superlattice nanowires with smaller Al component spacing have higher structural stability. The increase of Al composition will further weaken the stability of GaAs/Ga1−xAlxAs heterostructure

In recent years, due to the increase of nanotechnology and the demand for innovations in cementitious materials, there has been a significant interest in research in the application of nanosilica (NS) as supplementary nano cementitious material (SNCM). The incorporation of NS in cementitious materials aims to improve its performance in specific applications, such as for high strength and durability

Silica nanoparticles with four circular surface patches made of polystyrene (PS) and arranged in a tetrahedral symmetry are synthesized through the multistep growth of the silica core of silica/PS tetrapods. Transmission electron microscopy and energy dispersive X-ray analysis studies indicate that, as the silica core regrows, its surface conforms to the shape of the polystyrene nodules, allowing good

This paper reviews health-related nanomaterial patents filed in the European Patent Office. Five-year patents were examined, with a focus on cancer treatment applications. The main objective of this work is to examine key patent information in order to cover trends and determine the technological subfields that are experiencing the highest growth in cancer treatment through identifying the most commonly

Silica aerogel (SA) is a nanoporous material and has attracted increasing attention in the field of thermal insulation in recent years. In this work, the thermal stability and pyrolysis characteristics of the methyltrimethoxysilane (MTMS) silica aerogel (MSA) prepared in pure water were investigated experimentally. The MSA shows a high thermal stability with the onset and peak temperature (Tonset and

Silver nanoparticle s have a great potential in a broad range of applications such as drug-delivery carriers because of their antiviral and antibacterial properties. In this study, the coating properties of silver nanoparticle (size range of 1.6 nm) with three common anti-malarial drugs, Artemisinin, Artemether, and Artesunate have been studied by using the quantum mechanical and classical atomistic

The electronic and optical properties of the iron-doped bismuth nanoclusters having less than 15 atoms are presented here. This doping is especially interesting since it enhances the stability and magnetic properties of the bismuth clusters, as shown here. The effect of singly charging the clusters on their stability and electronic properties is also investigated. Binding energy analysis shows that

This study’s goal was to examine the attitudes of prospective science teachers towards nanobiotechnology according to different variables (their gender, grade level, family educational status, family income status, the region of their university, the frequency of teaching nanotechnology topics in their courses, and the status of following scientific publications). The survey method was used in the

Solution-processed ultraviolet (UV) photodetectors with high performance have great potential in many practical applications. In this paper, quantum-sized zinc oxide (ZnO) nanoparticles (~ 5.5 nm) were synthesized by a simple and low-cost chemical reflux method. The crystalline structure, morphologies, and optical properties of ZnO nanoparticles were investigated in detail. The results showed that

In this work, the peroxidase-like properties of dendritic Au-Pt nanoparticles (30~60 nm) were investigated and these nanoparticles were applied in the immunoassay as signal labels for the detection of capsular polysaccharides (CPS, ~ 300 kDa, expressed on the cell envelopes of Burkholderia pseudomallei causing melioidosis). The immunoassay adopts monoclonal anti-CPS antibodies. The assay limit of detection

MoS2-modified In2S3 (x wt.%MoS2-In2S3) samples (0 ≤ x ≤ 20) were fabricated through a facile one-pot hydrothermal process. All In2S3 samples modified by MoS2 deliver an excellent Cr6+ removal ability under visible-NIR-light-driven, and 5% MoS2-In2S3 can reduce 20 mg/L Cr6+ solution completely within 30 min with a trace photocatalyst concentration (0.27 mg/mL) which is 3.2-hold higher than that of single

The effects of the poly (vinyl alcohol): zinc acetate (PVA:AcZn) mass ratio on the morphology and structure of the precursor electrospun fibers as well as the calcination conditions on the morphology and chemical and physical structure of the as-obtained zinc oxide (ZnO) nanofibers are deeply discussed in this work. Initially, precursor nanofibers were obtained through electrospinning, a simple and

Knowledge, technology, and society as well as natural systems are increasingly coherent and complex, and new systems are continuously formed at their interfaces. Convergence is a problem-solving strategy to holistically understand, create, and transform a system for reaching a common goal, such as advancing an emerging technology in society. The systems may be either in natural, scientific, technological

The purpose of this in vitro study is to evaluate the effect of the incorporation of silanized and non-silanized silica nanoparticles (~ 160 nm) in mechanical properties and surface roughness of self-cured acrylic resins. Five groups of samples were produced (with six specimens each), following the ISO 20795-1:2013 specifications. In the control group (Ctrl), no particles were added in the resin composition

In this study, the core/shell/shell-structured SiO2/YPO4:Nd/SiO2 composite microspheres with near-infrared luminescence property were prepared by sol-gel method. The morphology and structure of the as-prepared microspheres were observed by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and infrared spectroscopy (IR). These tests show that

The effect of the precursor and surface modification by sulfate and phosphate groups on the properties of cerium oxide was studied. The obtained materials were characterized by infrared (IR) and Raman spectroscopy, X-ray powder diffraction, scanning electron microscopy (SEM), high resolution transmission electron microscopy (TEM), thermogravimetric analysis (TGA) with the gas phase composition analysis