- 作 者: ( "chunqing he" OR "chun-qing he" )
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Negative electrodes for supercapacitors with good performance using conductive bismuth-catecholate metal–organic frameworksDalton Transactions (IF 4.569) Pub Date : 2023-03-02 ,DOI:10.1039/d3dt00117bSi Chen, Haoliang Zhang, Xu Li, Yong Liu, Mingyi Zhang, Xiangyang Gao, Xin Chang, Xiangjun Pu, Chunqing HeMetal–organic frameworks (MOFs) have attracted increasing research interest in various fields. Unfortunately, the poor conductivity of most traditional MOFs considerably hinders their application in energy storage. Benefiting from the full charge delocalization in the atomic plane, two-dimensional conductive coordination frameworks achieve good electrochemical performance. In this work, π–π coupling ...
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Extra highways for proton diffusion in TiO2@MIL-101-Cr/Nafion composite membranes with high single-cell performanceJournal of Power Sources (IF 9.794) Pub Date : 2023-03-02 ,DOI:10.1016/j.jpowsour.2023.232906Xu Li, Libing Qian, Lei Liu, Zhe Liu, Haoliang Zhang, Lan Yang, Dongwei Zhang, Zhiyuan Chen, Pengfei Fang, Chunqing HeBuffer layers of TiO2 nanoparticles are introduced on the surface of the MIL-101-Cr, a kind of metal-organic frameworks (MOFs), to improve performances of MOFs/Nafion proton exchanging membranes. A series of Nafion composite membranes are fabricated by doping TiO2-wrapped MIL-101-Cr (TiO2@MIL-101-Cr). The water uptakes of composite membranes reasonably increase while their swelling ratios unexpectedly ...
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Study on NO2 Barrier Properties of RTV Silicone Rubber by Incorporation of Functional Graphene Oxide.Materials (IF 3.748) Pub Date : 2023-02-28 ,DOI:10.3390/ma16051982Zhen Huang,Jinshuai Zhang,Zheng Wang,Xiangyang Peng,Jiapeng Fang,Chunqing He,Pengfei Fang
In this study, functional graphene oxide (f-GO) nanosheets were prepared to enhance the NO2 resistibility of room-temperature-vulcanized (RTV) silicone rubber. A nitrogen dioxide (NO2) accelerated aging experiment was designed to simulate the aging process of nitrogen oxide produced by corona discharge on a silicone rubber composite coating, and then electrochemical impedance spectroscopy (EIS) was
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Thin-film composite membrane for desalination containing a sulfonated UiO-66 materialJournal of Materials Science (IF 4.682) Pub Date : 2023-02-01 ,DOI:10.1007/s10853-023-08216-wQizhao Luo, Jingjing Li, Panfeng Yun, Libing Qian, Jinshuai Zhang, Chunqing He, Xuejiao Hu, Haifeng JiangDesalination through reverse osmosis (RO) membrane is one of the most popular ways. However, conventional RO membranes meet a trade-off between salt rejection and water flux which limit their comprehensive performance. In this work, sulfonated zirconium (IV)-carboxylate metal–organic framework (MOF) material UiO-66-SO3H was successfully synthesized, and thin-film nanocomposite (TFN) with UiO-66-SO3H-incorporated ...
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Arthroscopic soft tissue reconstruction of the glenoid avulsion of the glenohumeral ligament (GAGL): First case report in ChinaAsian Journal of Surgery (IF 2.808) Pub Date : 2022-12-05 ,DOI:10.1016/j.asjsur.2022.11.119Fei Zhang, Maimaitikelimu Tusongjiang, Chunqing He, Gang Xu
Abstract not available
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Lodging resistance of rice plants studied from the perspective of culm mechanical properties, carbon framework, free volume, and chemical compositionScientific Reports (IF 4.996) Pub Date : 2022-11-21 ,DOI:10.1038/s41598-022-24714-4Qing Liu, Chongshan Yin, Xi Li, Chunqing He, Zhi Ding, Xuan DuIn this study, four varieties of rice were cultivated on the same farmland under same conditions and for same duration. However, their lodging resistance was found to be obviously different from each other. Herein, three key factors that highly influenced the lodging resistance were identified. First, in terms of morphological trait, in contrast to the generally believed theory that the overall thickness ...
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Synergy of yolk-shelled structure and tunable oxygen defect over CdS/CdCO3-CoS2: Wide band-gap semiconductors assist in efficient visible-light-driven H2 production and CO2 reductionChemical Engineering Journal (IF 16.744) Pub Date : 2022-11-02 ,DOI:10.1016/j.cej.2022.140113Siyi Zhang, Shiwen Du, Yumin Wang, Ziwu Han, Xu Li, Guojun Li, Qing Hu, Hu Xu, Chunqing He, Pengfei FangYolk-shelled CoS2 nanospheres are designed through Kirkendall Effect and subsequently converted into defect-rich CdS/CdCO3-CoS2 photocatalysts via in-situ growth method. The optimal CdS/CdCO3-CoS2 exhibits a significant hydrogen evolution rate of 64867.88 μmol h-1 gcat-1 that is 3.23 and 49.45 folds higher than CoS2-CdS and pure CdS. CO2 reduction rate of CdS/CdCO3-CoS2 is detected additionally (654 ...
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Novel method and instrument for temperature-dependent tensile test of metallic materials without thermometers.Review of Scientific Instruments (IF 1.843) Pub Date : 2022-11-01 ,DOI:10.1063/5.0107213Yuyang Hua,Shuo Li,Xiaofeng Wang,Chunqing HeA novel method for measuring temperature and conducting tensile tests of metallic wires at elevated temperatures is presented. Ohmic heating is used to elevate the sample temperature with a uniform distribution, which could vary from room temperature to its melting point. The temperatures of the wires in steady states are determined by using a heat transfer model without measuring directly by thermometers ...
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ZnCo2S4/Zn0.2Cd0.8 S Z-scheme heterojunction: Efficient photocatalytic H2 evolution coupling selective oxidation of benzyl alcoholInternational Journal of Hydrogen Energy (IF 7.139) Pub Date : 2022-10-06 ,DOI:10.1016/j.ijhydene.2022.09.100Chunhe Li, Shunyi Shan, Kuankuan Ren, Weidong Dou, Chunqing He, Pengfei FangThe Z-scheme heterojunction photocatalysts possess excellent photocatalytic activity benefitting from their properly matched edge potentials. In this work, ZnCo2S4 nanoparticles are anchored on Zn0.2Cd0.8S solid solution nanowires and assembled into binary ZnCo2S4/Zn0.2Cd0.8S nanocomposites. The as-synthesized ZnCo2S4/Zn0.2Cd0.8S nanocomposites act as bifunctional photocatalysts, which can be used ...
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Application of motion-sensitized driven equilibrium based black blood 3D TSE sequence in the detection of brain metastasesMagnetic Resonance Imaging (IF 3.13) Pub Date : 2022-08-16 ,DOI:10.1016/j.mri.2022.08.010Chen Jun, Li Shuhua, Zhang Xue, Bu Chunqing, He MingliPurpose To investigate the value of contrast-enhanced motion-sensitized driven equilibrium (MSDE) based black blood three-dimensional (3D) turbo spin echo (TSE) sequence in the detection of brain metastases compared with 3D Turbo Field Echo (TFE) sequence. Material and methods 53 patients with suspected brain metastases were included in this study between November 2021 and February 2022. Contrast-enhanced ...
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Diffusion behaviors of Sn dopant in ITO films upon supercritical CO2 treatment and annealingCeramics International (IF 5.532) Pub Date : 2022-07-11 ,DOI:10.1016/j.ceramint.2022.07.060Zhe Liu, Yawei Zhou, Libing Qian, Zhiyuan Chen, Shiju Yang, Lei Liu, Zhihu Dong, Yong Liu, Changwei Wei, Chunqing HeIndium Tin Oxide (ITO) thin films have been extensively studied for their excellent photoelectric performance. Nevertheless, the diffusion mechanism of doped-tin in ITO thin film is not sufficiently illuminated to date. Herein, the diffusion behaviors of Sn dopant in ITO films fabricated by RF-sputtering were investigated. As-deposited ITO thin films were treated by supercritical CO2 (SCCO2) fluid ...
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Preparation of One-Dimensional Polyaniline Nanotubes as Anticorrosion CoatingsMaterials (IF 3.748) Pub Date : 2022-04-28 ,DOI:10.3390/ma15093192Guangyuan Yang, Fuwei Liu, Ning Hou, Sanwen Peng, Chunqing He, Pengfei Fang
Uniform polyaniline (PANI) nanotubes were synthesized by a self-assembly method under relatively dilute hydrochloric acid (HCl) solution. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and UV-Vis-NIR spectroscopy were employed to characterize the morphology and molecular structure of the PANI products. SEM images show that the PANI nanotubes have uniform morphology
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High-performance fuel cells using Nafion composite membranes with alignment of sulfonated graphene oxides induced by a strong magnetic fieldJournal of Membrane Science (IF 10.53) Pub Date : 2022-03-30 ,DOI:10.1016/j.memsci.2022.120516Lei Liu, Xu Li, Zhe Liu, Shengjie Zhang, Libing Qian, Zhiyuan Chen, Jingjing Li, Pengfei Fang, Chunqing HeProton exchange membrane (PEM) is a key component of proton exchange membrane fuel cells (PEMFCs) and provides proton conduction between fuel and oxidant, and it is vitally important and practical to develop PEMs with high proton conductivity through membranes. However, it is still a major challenge to develop such membranes with high through-plane proton conductivity. In this study, Nafion composite ...
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Gas permeation and microstructure of reduced graphene oxide/polyethyleneimine multilayer films created via recast and layer-by-layer deposition processesRSC Advances (IF 4.036) Pub Date : 2022-02-25 ,DOI:10.1039/d1ra09205gChongshan Yin, Xuan Du, Zhi Ding, Qing Zeng, Xi Li, Chunqing He, Bangyun Xiong, Jingjing Li, Yawei Zhou
Nowadays, graphene/polymer composite films with multilayer structure have attracted significant attention for gas barrier application. In this study, a series of reduced graphene oxide/polyethyleneimine (RGO/PEI) composite films were created via recast and layer-by-layer deposition processes. By using the recast process, the myriad PEI molecules in the precursor solution (the PEI : GO feeding ratio
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High Piezocatalytic Capability in CuS/MoS2 Nanocomposites Using Mechanical Energy for Degrading PollutantsJournal of Colloid and Interface Science (IF 9.965) Pub Date : 2021-11-17 ,DOI:10.1016/j.jcis.2021.11.070Hongjing Li, Yi Xiong, Yumin Wang, Wenmei Ma, Jiapeng Fang, Xu Li, Qing Han, Yong Liu, Chunqing He, Pengfei FangPiezocatalysis, driven by mechanical energy and piezoelectric effect, is of great potential in addressing the environmental issues. In this work, a piezoelectric catalyst was fabricated by growing few-layer MoS2 nanosheets onto CuS, for the piezocatalytic degradation of Rhodamine B (RhB), methylene blue (MB) and hexavalent chromium (Cr (VI)). The excellent removal efficiency of Cr (VI) and RhB can ...
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Evolution of defects and charge carrier transport mechanism in fluorine-doped tin oxide thin films upon thermal treatmentJournal of Applied Physics (IF 2.877) Pub Date : 2021-10-05 ,DOI:10.1063/5.0062931Yawei Zhou, Zhe Liu, Chunqing He, Chongshan Yin
Fluorine-doped tin oxide (FTO) thin films were prepared by a radio frequency magnetron sputtering technique. The defects and charge carrier transport behavior in FTO thin films were evaluated during the transition process from amorphous to nanocrystalline structures. The stable lattice structure in FTO thin films was obtained as the annealing temperature reached 400 °C. Positron annihilation results
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Enhancement in photoelectric properties of ITO films by regulating defects and dopants with supercritical fluid treatmentApplied Surface Science (IF 7.392) Pub Date : 2021-07-06 ,DOI:10.1016/j.apsusc.2021.150551Zhe Liu, Yawei Zhou, Yunjie Ping, Libing Qian, Jingjing Li, Lei Liu, Yong Liu, Kenji Ito, Changwei Wei, Chunqing HeThe carrier concentration of the indium tin oxide (ITO) thin films can be enhanced by supplying extra conducting electrons with tin dopants. However, defects and impurities, which are rich around grain boundaries, result in strong carrier scattering. In this work, ITO films prepared by magnetron sputtering were subjected to supercritical carbon dioxide (SCCO2) fluid treatment with different concentrations ...
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New Aspects of Degradation in Silicone Rubber under UVA and UVB Irradiation: A Gas Chromatography–Mass Spectrometry StudyPolymers (IF 4.967) Pub Date : 2021-07-05 ,DOI:10.3390/polym13132215Zheng Wang, Libing Qian, Xiangyang Peng, Zhen Huang, Yue Yang, Chunqing He, Pengfei Fang
In this paper, gas chromatography–mass spectrometry (GC–MS) and positron annihilation lifetime spectroscopy (PALS) were used to probe the changes of oligomers and the polydimethylsiloxane (PDMS) network in silicone rubber, after different durations of UVA/UVB irradiation. At the early stage (<300 h) of UVA/UVB irradiation, the concentration of D4-D9 decreases. The o-Ps intensity of the extracted silicone
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Low metal–insulator transition temperature of Ni-doped vanadium oxide filmsCeramics International (IF 5.532) Pub Date : 2021-07-05 ,DOI:10.1016/j.ceramint.2021.07.039Zhenyu Gao, Zhe Liu, Yunjie Ping, Ziteng Ma, Xu Li, Changwei Wei, Chunqing He, Yong LiuElemental doping is the main means to regulate the phase transition of vanadium oxide (VO2); however, the effects of low valence elemental (<4+) doping on the phase transition of VO2 are still controversial. In the present work, Ni-doped VO2 films were prepared on quartz glass by direct current reactive magnetron sputtering and subsequent annealing. With the increase of the Ni doping content, the phase ...
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Open Porosity and Pore Size Distribution of Mesoporous Silica Films Investigated by Positron Annihilation Lifetime Spectroscopy and Ellipsometric PorosimetryMaterials (IF 3.748) Pub Date : 2021-06-18 ,DOI:10.3390/ma14123371Bangyun Xiong, Jingjing Li, Chunqing He, Jiale Lai, Xiangjia Liu, Tao Huang
Tunable mesoporous silica films were prepared though a sol-gel process directed by the self-assembly of various triblock copolymers. Positron annihilation γ-ray energy spectroscopy and positron annihilation lifetime spectroscopy (PALS) based on intense pulsed slow positron beams as well as ellipsometric porosimetry (EP) combined with heptane adsorption were utilized to characterize the open porosi
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Prominently enhanced corrosive gas NO2 resistibility for silicone rubber composite coatings by incorporation of functional g-C3N4 nanosheetsProgress in Organic Coatings (IF 6.206) Pub Date : 2021-04-17 ,DOI:10.1016/j.porgcoat.2021.106292Jinshuai Zhang, Shiwen Du, Zheng Wang, Libing Qian, Chunqing He, Zhen Huang, Xiangyang Peng, Hu Xu, Pengfei FangIn this study, the functional graphitic carbon nitride (g-C3N4) nanosheets are prepared to enhance the NO2 resistibility of room temperature vulcanized (RTV) silicone rubber. After corrosive gas NO2 oxidation for 24 h, the water barrier ability of RTV nanocomposite coatings was evaluated by electrochemical impedance spectroscopy (EIS). At the optimal filler content of 0.3 wt.%, the impedance module ...
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N-self-doped graphitic carbon aerogels derived from metal–organic frameworks as supercapacitor electrode materials with high-performanceElectrochimica Acta (IF 7.336) Pub Date : 2021-03-26 ,DOI:10.1016/j.electacta.2021.138237Yunjie Ping, Shiju Yang, Jinzhao Han, Xu Li, Haoliang Zhang, Bangyun Xiong, Pengfei Fang, Chunqing HeMetal–organic frameworks (MOFs) are promising precursors to prepare heteroatom-doped porous carbon for high-performance supercapacitor. N-self-doped graphitic carbon aerogels (NGCA) with hierarchically porous tunnels, high graphitization degree, high N content and 3D conductive network structure are successfully prepared by dry-freezing and successive high temperature treatment of ZIF-8/carboxymethylcellulose ...
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Effect of the orientation of sulfonated graphene oxide (SG) on the gas-barrier properties and proton conductivity of a SG/Nafion composite membraneJournal of Membrane Science (IF 10.53) Pub Date : 2021-02-08 ,DOI:10.1016/j.memsci.2021.119146Chongshan Yin, Chunqing He, Qicheng Liu, Bangyun Xiong, Jingjing Li, Yawei ZhouIn a proton-exchange membrane fuel cell, the proton-exchange membrane is located between the oxidant and the fuel, which facilitates proton conduction and prevents the penetration of gas molecules. In this study, sulfonated graphene oxides (SG) were synthesized, and a series of SG/Nafion composite multilayer membranes were prepared using layer-by-layer assembling. This multilayer membrane-structure ...
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Magnetic aligned sulfonated carbon nanotube/Nafion composite membranes with anisotropic mechanical and proton conductive propertiesJournal of Materials Science (IF 4.682) Pub Date : 2021-01-03 ,DOI:10.1007/s10853-020-05678-0Libing Qian, Chongshan Yin, Lei Liu, Xiaowei Zhang, Jingjing Li, Zhe Liu, Haining Zhang, Pengfei Fang, Chunqing HeNafion composite membranes with various amounts of sulfonated multi-walled carbon nanotubes (Su-CNTs) were prepared either in or without a strong magnetic field. Interestingly, it is found that being recast in a strong magnetic field, the tensile strength at break and proton conductivity of Su-CNTs/Nafion composite membranes parallel to the magnetic field direction were higher than those perpendicular ...
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Effect of pore morphology and surface roughness on wettability of porous titania filmsMaterials Research Express (IF 2.025) Pub Date : 2020-12-03 ,DOI:10.1088/2053-1591/abc770Bangyun Xiong, Jingjing Li, Chunqing He, Xiuqin Tang, Zizhao Lv, Xiaofeng Li, Xiqiang Yan
Surface hydrophobicity/hydrophilicity of titania (TiO2) films, spin-coated on silicon wafers, were tuned by introducing surface mesopores with various morphologies using a triblock copolymer F38 as the template agent of different weight ratios via a sol-gel method. It is found that both the porosity (2.92∼33.03%) and the surface roughness (0.22∼0.43 nm for arithmetic mean roughness and 0.28∼0.58 nm
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Electrochemical Performance of Bi2O3 Supercapacitors Improved by Surface Vacancy DefectsCeramics International (IF 5.532) Pub Date : 2020-11-28 ,DOI:10.1016/j.ceramint.2020.11.190Shiju Yang, Libing Qian, Yunjie Ping, Haoliang Zhang, Jingjing Li, Bangyun Xiong, Pengfei Fang, Chunqing HeVacancy defects have important impacts on the physical-chemical properties of metal oxides. In the present work, two types of Bi2O3 powders with different morphologies were synthesized for supercapacitor electrodes by calcination (denoted as c-Bi2O3) and two-step hydrothermal methods (donated as h-Bi2O3). Vacancy clusters of VBi,VO··VBi, with different concentrations were observed in these two samples ...
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Utilization of positron annihilation and electrochemical impedance to study the microstructure variations and water diffusion of NO 2 -oxidative-damaged silicone rubberJournal of Materials Science: Materials in Electronics (IF 2.779) Pub Date : 2020-11-20 ,DOI:10.1007/s10854-020-04867-6Jinshuai Zhang, Zheng Wang, Yi Luo, Libing Qian, Chunqing He, Ning Qi, Pengfei Fang, Zhen Huang, Xiangyang PengSilicone rubber is widely used in power grids, electronics and aerospace, because of its hydrophobicity, high flexibility, etc. However, it is susceptible to some environmental chemical factors, such as NO2 and ozone, which can induce chain scission, the generation of defects and the ingress of water. In this work, we systematically studied the microstructure variations and water diffusion behavior ...
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Water diffusivity transition in fumed silica-filled polydimethylsiloxane composite: Correlation with the interfacial free volumes characterized by positron annihilation lifetime spectroscopyJournal of Materials Science (IF 4.682) Pub Date : 2020-11-02 ,DOI:10.1007/s10853-020-05465-xZheng Wang, Yue Yang, Xiangyang Peng, Zhen Huang, Libing Qian, Chunqing He, Pengfei FangFumed silica (FS)-filled polydimethylsiloxane (PDMS) composite is widely used as the external insulating material in power grid. The function of PDMS composite is to keep the core of an insulation device being dry by preventing the permeation of outside water. To study water diffusion in PDMS composite helps to shed light upon the failure mechanism of the insulation devices. In this paper, positron ...
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High specific power/energy, ultralong life supercapacitors enabled by cross-cutting bamboo-derived porous carbonsDiamond and Related Materials (IF 3.806) Pub Date : 2020-11-01 ,DOI:10.1016/j.diamond.2020.108044Jinzhao Han, Yunjie Ping, Shiju Yang, Yuanming Zhang, Libing Qian, Jingjing Li, Lei Liu, Bangyun Xiong, Pengfei Fang, Chunqing HeAbstract The advantages of carbon-based supercapacitors are high specific power and long life, but their specific energy is low. It is difficult to increase the specific energy and specific power of carbon-based supercapacitors simultaneously. In this work, bamboos are cross-cut into thin flakes, which are carbonized and KOH-treated to obtain porous carbons for supercapacitors. The specific capacitance ...
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Interaction of Single-Atom Platinum–Oxygen Vacancy Defects for the Boosted Photosplitting Water H2 Evolution and CO2 Photoreduction: Experimental and Theoretical StudyThe Journal of Physical Chemistry C (IF 4.177) Pub Date : 2020-10-30 ,DOI:10.1021/acs.jpcc.0c04931Shengnan Cai, Liming Wang, Shiliang Heng, Haiyan Li, Yan Bai, Dongbin Dang, Qinggao Wang, Pingyu Zhang, Chunqing HeThe incorporation of oxygen vacancy defects into the catalysts has been attracting significant interest for regulating the performance of photocatalysts. Single-atomic-site metal catalysts have also been paid ever-growing attention because they maximized the atom efficiency and thus generated excellent catalytic performance. Herein, we report the interaction of oxygen vacancy defects and decorated ...
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