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Promotion of photocatalytic steam reforming of methane over Ag^0/Ag^+-SrTiO3

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Chinese Chemical Letters 2020年第6期31卷 1530-1534页

作者： Bingqing Tan Yinghao ye Zeai Huang liqun ye Minzhi Ma Ying Zhou State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China The Center of New Energy Materials and Technology School of Materials Science and EngineeringSouthwest Petroleum UniversityChengdu 610500China Engineering Technology Research Center of Henan Province for Solar Catalysis Collaborative Innovation Center of Water Security for Water Source Region of Mid-Line of South-to-North Diversion Project of Henan ProvinceNanyang Normal UniversityNanyang 473061China

Methane(CH4)is not only used as a fuel but also as a promising clean energy source for hydrogen *** steam reforming of CH4(SRM)using photocatalysts can realize the production of syngas(CO+H2)with low energy *** this work,Ag0/Ag+-loaded SrTi03 nanocomposites were successfully prepared through a photodeposition *** the loading amount of Ag is 0.5 mol%,the atom ratio of Ag+to Ag0 was found to be 51:*** this case,a synergistic effect of Ago and Ag+was observed,in which Ago was proposed to improve the adsorption of H2 O to produce hydroxyl radicals and enhance the utilization of light energy as well as the separation of charge ***,Ag0 was regarded as the reduction reaction site with the function of an electron trapping *** addition,Ag+adsorbed the CH4 molecules and acted as the oxidation reaction sites in the process of photocatalytic SRM to further promote electron-hole *** a result,0.5 mol%Ag-SrTi03 exhibited enhancement of photocatalytic activity for SRM with the highest CO production rate of 4.3μmol g-1 h-1,which is ca.5 times higher than that of pure *** work provides a facile route to fabricate nanocomposite with cocatalyst featuring different functions in promoting photocatalytic activity for SRM.

关键词： Photocatalysis Steam reforming of CH4 Hydrogen Carbon monoxide Cocatalyst Ag0/Ag+-SrTiO3

Industrial TiO2 based nacreous pigments as functional building materials:Photocatalytic removal of NO

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Chinese Journal of Chemical Engineering 2020年第10期28卷 2587-2591页

作者： Jue Li Li Wang Chunqiu Han Fengyun Su Yumin Leng liqun ye College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China College of Physics and Electronic Engineering Nanyang Normal UniversityNanyang 473061China Engineering Technology Research Center of Henan Province for Solar Catalysis College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061China

In this paper,the photocatalytic activity of industrial titanium dioxide(TiO2)based nacreous pigments was researched as functional building materials for photocatalytic NO *** industrial TiO2 based nacreous pigments were selected to estimate the photocatalytic activity for NO *** study is a good proof that pearlescent pigments can eliminate NO,and its performance is positively correlated with its titanium dioxide *** this research will widen the application of nacreous pigments in functional building materials,and provide a new way to eliminate in door nitric oxide pollution.

关键词： Nacreous pigments Titanium dioxide Photocatalysis Nitric oxide Environment Building materials

Fluorine-doped BiVO_(4) photocatalyst: Preferential cleavage of C−N bond for green degradation of glyphosate

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Journal of Environmental Sciences 2023年第5期127卷 60-68页

作者： Yunlong Chen Yingping Huang Hailin Tian liqun ye Ruiping Li Chuncheng Chen Zhongxu Dai Di Huang College of Materials and Chemical Engineering China Three Gorges UniversityYichang 443002China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China College of Biology&Pharmacy China Three Gorges UniversityYichang 443002China Beijing National Laboratory for Molecular Sciences Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

With increasing concerns on the environment and human health,the degradation of glyphosate through the formation of less toxic intermediates is of great *** the developed methods for the degradation of glyphosate,photodegradation is a clean and efficient *** this work,we report a new photocatalyst by doping F ion on BiVO_(4) that can efficiently degrade glyphosate and reduce the toxic emissions of aminomethylphosphonic acid(AMPA)through the selective(P)−C−Ncleavage in comparison of BiVO_(4) *** results demonstrate that the best suppression of AMPA formation was achieved by the catalyst of 0.3F@BiVO_(4) at pH=9(AMPA formation below10%).In situ attenuated total reflectance Fourier transforms infrared(ATR-FTIR)spectroscopy indicates that the adsorption sites of glyphosate on BiVO_(4) and 0.3F@BiVO_(4) are altered due to the difference in electrostatic *** an absorption alteration leads to the preferential cleavage of the C−Nbond on the N−C−P skeleton,thereby inhibiting the formation of toxic *** results improve our understanding of the photodegradation process of glyphosate catalyzed by BiVO_(4)-based catalysts and pave a safe way for abiotic degradation of glyphosate.

关键词： Fluorine-doped BiVO_(4) Glyphosate AMPA Photocatalytic degradation Seletive oxidation

Piezoelectric materials for pollutants degradation: State-of-the-art accomplishments and prospects

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Chinese Chemical Letters 2024年第4期35卷 61-72页

作者： Yuqing Zhu Haohao Chen Li Wang liqun ye Houle Zhou Qintian Peng Huaiyong Zhu Yingping Huang College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China College of Hydraulic&Environmental Engineering China Three Gorges UniversityYichang 443002China School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4001Australia

Piezoelectric catalysis, a new catalytic method, is widely used in the field of environmental sanitation, including waste water treatment and dye degradation. However, in the face of the growing environmental pollution problem, the efficiency of piezoelectric catalysis is still hampered by the stress variation in the natural environment. Therefore, it is particularly important to improve the catalytic efficiency of piezoelectric materials. We divide piezoelectric materials into two categories: inorganic piezoelectric materials and organic piezoelectric materials. Then the mainstream inorganic piezoelectric materials are divided into four subcategories, namely:(1) MTiO_(3)(M = Ba, Sr),(2) bi-class catalytic materials,(3) MoX_(2)(X = S,Se), and(4) ZnO piezoelectric materials. The mainstream organic piezoelectric materials are divided into PVDF and g-C_(3)N_(4)materials. At the same time, the above materials are summarized to explain the excellent performance of materials from the perspective of structure and piezoelectric principle. In addition,we summarized the modification methods that can be applied to piezoelectric materials:(1) Morphology methods,(2) composites with heterojunctions, and(3) surface modification. Finally, we summarized the prospects of piezoelectric materials in the field of environment and water treatment.

关键词： Ultrasound Cavitation Piezoelectric materials Degradation Organic pollutants

Preparation and electrochemical characterization of ultrathin WO3-x/C nanosheets as anode materials in lithium ion batteries

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Nano Research 2017年第6期10卷 1903-1911页

作者： Keyan Bao Wutao Mao Guangyin Liu liqun ye Haiquan Xie Shufang Ji Dingsheng Wang Chen Chen Yadong Li College of Chemistry and Pharmaceutical Engineering Nanyang Normal University Nanyang 473061 China Department of Chemistry Tsinghua University Beijing 100084 China

Ultrathin two-dimensional （2D） nanomaterials offer unique advantages compared to their counterparts in other dimensionalities. O-vacancies in such materials allow rapid electron diffusion. Carbon doping often improves the electric conductivity. Considering these merits, the WO3-x/C ultrathin 2D nanomaterial is expected to exhibit excellent electrochemical performance in Li-ion batteries. Here, ultrathin WO3-xC nanosheets were prepared via an acid-assisted one-pot process. The as-prepared WO3-x/C ultrathin nanosheets showed good electrochemical performance, with an initial discharge capacity of 1,866 mA·h·g^-1 at a current density of 200 mA·g^-1 After 100 cycles, the discharge and charge capacities were 662 and 661 mA·h·g^-1, respectively. The reversible capacity of the WO3-x/C ultrathin nanosheets exceeded those of WO3 and WOg-x nanosheets. The electrochemical testing results demonstrated that WO3-x/C ultrathin nanosheets are promising alternative anode materials for Li-ion batteries.

关键词： WO3-x/C one-pot process,O-vacancies,lithium-ion batteries,anodes

Ultra wideband CMOS digital T-type attenuator with low phase errors

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维普期刊数据库

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Journal of Semiconductors 2022年第3期43卷 57-59页

作者： Chao Fan Yahua Ran liqun ye Chengdu CORPRO technology Co. Ltd.Chengdu 610000China

A proposed inductive-phase-compensation ultra wideband CMOS digital T-type attenuator design based on an analysis of minimising phase errors is presented in this *** a standard CMOS technology,the proposed attenuator is analytically demonstrated to have low phase errors due to the inductive-phase-compensation network.A design equation is inferred and a wide-band 4dB attenuation bit digital attenuator with low phase errors is designed as a test vehicle for the proposed approach.

关键词： ultra-wideband digital T-type attenuator low phase error inductive-phase-compensation CMOS

Floret-like Fe-N_(x)nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer boosting oxygen electroreduction

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Frontiers of Chemical Science and Engineering 2023年第5期17卷 525-535页

作者： Yong Zheng Mingjin Li Yongye Wang Niu Huang Wei Liu Shan Chen Xuepeng Ni Kunming Li Siwei Xiong Yi Shen Siliang Liu Baolong Zhou Niaz Ali Khan liqun ye Chao Zhang Tianxi Liu College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China College of Materials Science and Engineering Hubei Key Laboratory for New Textile Materials and ApplicationsWuhan Textile UniversityWuhan 430200China Hubei Three Gorges Laboratory Yichang 443007China College of Environment Zhejiang University of TechnologyHangzhou 310032China College of Light-Textile Engineering and Art Anhui Agricultural UniversityHefei 230036China School of Pharmacy Weifang Medical UniversityWeifang 261053China Key Laboratory of Textile Fiber and Products(Wuhan Textile University) Ministry of EducationWuhan 430200China

Fe–N_(x)nanoparticles-embedded porous carbons with a desirable superstructure have attracted immense attention as promising catalysts for electrochemical oxygen reduction ***,we employed Fe-coordinated covalent triazine polymer for the fabrication of Fe–N_(x)nanoparticle-embedded porous carbon nanoflorets(Fe/N@CNFs)employing a hypersaline-confinement-conversion *** of tailored N types within the covalent triazine polymer interwork in high proportions contributes to the generation of Fe/N coordination and subsequent Fe–N_(x)*** to the utilization of NaCl crystals,the resultant Fe/N@CNF-800 which was generated by pyrolysis at 800℃showed nanoflower structure and large specific surface area,which remarkably suppressed the agglomeration of high catalytic active *** expect,the Fe/N@CNF-800 exhibited unexpected oxygen reduction reaction catalytic performance with an ultrahigh half-wave potential(0.89 V *** hydrogen electrode),a dominant 4e–transfer approach and great cycle stability(>92%after 100000 s).As a demonstration,the Fe/N-PCNF-800-assembled zinc–air battery delivered a high open circuit voltage of 1.51 V,a maximum peak power density of 164 mW·cm^(-2),as well as eminent rate performance,surpassing those of commercial Pt/*** contribution offers a valuable avenue to exploit efficient metal nanoparticles-based carbon catalysts towards energy-related electrocatalytic reactions and beyond.

关键词： Fe–N_(x)nanoparticles hypersaline-confinement conversion floret-like carbon covalent triazine polymers oxygen reduction reaction

同方期刊数据库

Ni2P loading on Cd0.5Zn0.5S solid solution for photocatalytic H2 production and exceptional nitrogen fixation under visible light

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Ni2P loading on Cd0.5Zn0.5S solid solution for photocatalyti...

Molecular oxygen activation enhancement by BiOBr0.5I0.5/BiOI utilizing the synergistic effect of solid solution and heterojunctions for photocatalytic NO removal

河南省化学会2016年学术年会

作者： Chunqiu Han Zhaoyu Ma Li Jue liqun ye Haiquan Xie College of Chemistry & Pharmaceutical Engineering Nanyang Normal University

Transition metal phosphide(TMP) was used as cocatalyst to enhance the photocatalytic activity of CdZnS solid solution for photocatalytic H production and nitrogen fixation under visible light *** NiP/CdZnS photocatalyst was characterized by X-ray diffraction patterns(XRD),transmission electron microscopy(TEM),UV-vis diffuse reflectance spectra(DRS) and X-ray photoelectron spectroscopy(XPS).The photocatalytic data showed that NiP/CdZnS had higher activity than pure CdZnS for photocatalytic H production and photocatalytic dinitrogen(N) fixation in the absence of any *** 1 h visible light irradiation(λ> 400 nm),the concentration of NH reached to 101.5 μmol *** the quantum efficiency at 420 nm monochromatic light reached 4.32%,which much higher than other ***-resolved PL spectra,photocurrent and electrochemical impedance(EIS) spectroscopy revealed that higher photo-induced carrier separation efficiency of NiP/*** work introduced CdZnS solid solution photocatalyst to reduce nitrogen,and offered a greenly,economically and efficiently way for nitrogen fixation.

关键词： Cd0.5Zn0.5S solid solution load photocatalytic H2 production nitrogen fixation

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Chinese Journal of Catalysis 2020年第10期41卷 1480-1487页

作者： Mingpu Kou Yu Deng Rumeng Zhang Li Wang Po Keung Wong Fengyun Su liqun ye Engineering Technology Research Center of Henan Province for Solar Catalysis College of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061HenanChina College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002HubeiChina School of Life Sciences The Chinese University of Hong KongShatinNTHong Kong SARChina

To improve the photocatalytic oxidation reaction activity for NO removal, photocatalysts with excellent activity are required to activate molecular oxygen. Solid solution and heterojunction were suggested as effective strategies to enhance the molecular oxygen activation viaexciton and carrier photocatalysis. In this study, a solid solution and heterojunction containing BiOBr0.5I0.5/BiOI catalyst was synthesized, and it showed improved photocatalytic activity for removing NO. The photocatalytic NO removal mechanism indicated that synergistic effects between the solid solution and heterojunction induced the enhanced activity for molecular oxygen activation. The photogenerated holes, superoxide, and singlet oxygen generated by the carrier and exciton photocatalysis supported the high photocatalytic NO removal efficiency. This study provides new ideas for designing efficient Bi-O-X(X = Cl, Br, I) photocatalysts for oxidation reactions.

关键词： BiOBr0.5I0.5/BiOI NO removal Molecular oxygen activation Carrier Exciton