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Journal of Materials Science & Technology 2023年第25期156卷 217-229页

作者： Yuhua Ma Xiadiye Aihemaiti Kezhen Qi Shiyin Wang Yanjie Shi Zhuanhu Wang Minghe Gao Fuhe Gai Yulian Qiu College of Chemistry and Chemical Engineering Xinjiang Normal UniversityUrumqi 830054China Xinjiang Key Laboratory of Energy Storage and Photoelectrocatalytic Materials Xinjiang Normal UniversityUrumqi 830054China College of Pharmacy Dali UniversityDali 671000China

The S-scheme heterojunctions can effectively separate photogenerated electrons and holes,retain their high redox capacity,and provide great prospects for enhancing the photocatalytic activity of the composites in different ***,S-scheme heterojunction photocatalytic materials were rationally designed and prepared by a simple hydrothermal method between narrow-bandgap red phosphorus(HRP)and wide-bandgap BaTiO_(3)(BTO)*** to the effective charge separation and redox ability from the S-scheme mechanism and oxygen vacancies,BTO/HRP exhibited good photoelectrochemical and photocatalytic degradation *** photoreaction tests demonstrated that BTO/HRP had high practicality in the removal of pollutants from wastewater;its photodegradation rate of Rhodamine B reached 3.029×10^(−1) min^(−1) in 12 min;and it could inactivate 1.8×10^(9) CFU/mL of *** in 1 h,with an antibacterial rate of 99.8%.This paper provided a promising photocatalyst for pollutant removal and a new strategy for the fabrication of efficient RP-based photocatalytic materials.

关键词： S-scheme heterojunction Red phosphorous BaTiO3 photocatalytic activity

Ferroelectric polarization effect on the photocatalytic activity of Bi_(0.9)Ca_(0.1)FeO_(3)/CdS S-scheme nanocomposites

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Journal of Environmental Sciences 2023年第2期124卷 310-318页

作者： Yaowen Zhang ZifeiWang Jiangwei Zhu Xuemin He Hongtao Xue Sanlong Li Weiwei Mao Yong Pu Xing’ao Li New Energy Technology Engineering Laboratory of Jiangsu Province&School of Science Nanjing University of Posts and TelecommunicationsNanjing 210023China Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037China School of Telecommunications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

BiFeO_(3)(BFO),as a kind of narrow band-gap semiconductor material,has gradually emerged advantages in the application of *** this paper,Ca doped BFO nanoparticles Bi_(0.9)Ca_(0.1)FeO_(3)(BCFO)were prepared by sol-gel *** BCFO and CdS nanocomposites with two morphologies were obtained by controlling the time of loading CdS under a low temperature liquid phase *** is found that the band gap becomes narrower after doping Ca into BFO,which is conducive to the absorption of visible *** all the samples,the composite of CdS nanowires and BCFO nanoparticles obtained by reaction time of 10 min has the best photocatalytic *** degradation rate of Methyl Orange solutionwas 94%after 90min under visible light irradiation,whichwasmuch higher than that of pure BCFO and ***,significant enhancement in the degradation rate(100%degradation in 60 min)can be achieved in poled samples after electric polarization *** highest degradation rate is due to the promoted separation of photogenerated carriers induced by the internal polarization field and the formation of S-scheme heterostructure between BCFO and *** BCFO-CdS nanocomposites may bring new insights into designing highly efficient photocatalyst.

关键词： BiFeO_(3) Nanocomposites S-scheme heterojunction photocatalytic activity

Synthesis of crystal-phase and color tunable mixed anion co-doped titanium oxides and their controllable photocatalytic activity

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矿物冶金与材料学报:英文版 2023年第10期30卷 2036-2043页

作者： Jingdi Cao Takuya Hhasegawa Yusuke Asakura Akira Yamakata Peng Sun Wenbin Cao Shu Yin Institute of Multidisciplinary Research for Advanced Materials Senda 980-8577Japan Kagami Memorial Research Institute for Materials Science and Technology Waseda UniversityShinju-ku 169-0051Japan Graduate School of Natural Science and Technology Okayama UniversityOkayama 700-8530Japan University of Science and Technology Beijing Beijing 100083China Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan

B and N mixed anions co-doped titania with various crystal phases such as anatase,brookite,and rutile were successfully synthesized by a hydrothermal synthesis followed by heat treatment in an ammonia gas atmosphere at 550-650℃(denoted as BN-Ana_x,BN-Bro_x,and BN-Rut_x,x is the treatment temperature).The colors of as-prepared BN-Ana,BN-Bro,and BN-Rut are red,yellow-green,and cyangreen,*** color changing mechanism of titania was related to their various band gap structure and the existence of B-N *** nitridation temperature exhibits effective color changing compared to that of nitridation *** different phases of the mixed anion codoped titania possess different photocatalytic deNO_(x) *** BN-Ana and BN-Rut show poor photocatalytic deNO_(x) activity,while the BN-Bro shows excellent photocatalytic deNO_(x) activity,better than that of standard titania photocatalyst Degussa *** colorful titania with low-photocatalytic activity is heavy metal elements free,indicating their possible applications as nontoxic color pigments or novel cosmetic raw materials.

关键词： colorful titania toxic elements free mixed anion compounds pigment photocatalytic activity cosmetic application

Novel ZIF-8/ZnS hollow polyhedral heterostructures derived from ZIF-8 with enhanced photocatalytic activity for degradation of aflatoxin B1

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Progress in Natural Science:Materials International 2023年第5期33卷 575-580页

作者： Junjie Pan Xiaobing Yang Junmei Zhou Wenliang Cheng Kejun Cheng Chemical Biology Center Lishui Institute of Agriculture and Forestry Sciences Fujian Provincial Key Laboratory of Eco-Industrial Green Technology Wuyi University Zhejiang Kangning Pharmaceutical Co. Ltd

Mycotoxins,formed in lots of foods during the production,processing and transportation processes,are the secondary metabolites of Fusarium genus,Penicillium and *** B1(AFB1) is considered as one of the most dangerous mycotoxins for human and animals due to its strong carcinogenicity and hepatotoxic ***,degradation of AFB1completely or reduction of AFB1to a low degree content has caused much *** this paper,novel ZIF-8/ZnS hollow polyhedral heterostructures were successfully synthesized by sulphurizing ZIF-8 via solvothermal *** synthesized samples were used as catalysts for AFB1degradation under UV light *** as-synthesized samples were analyzed by XRD,SEM,BET,UV-vis,ESR and so *** results show that parts of ZIF-8 can be sulphurized by TAA to synthesize ZnS and the ZIF-8 particles were etched to form the hollow *** sulphurizing degree of ZIF-8 has great influence on the photocatalytic activity of ZIF-8/*** with ZIF-8/ZnS(50) and ZIF-8/ZnS(150),ZIF-8/ZnS(100) exhibited the best photocatalytic activity and could degrade 98.6 % of *** that,the reactive species of ZIF-8/ZnS(100) were confirmed to be ·OH and ·O2-.This strategy of coupling MOFs with semiconductor provides a facile method to synthesize for catalyst with enhanced photocatalytic activity for degradation of food pollutants produced by aflatoxins.

关键词： photocatalytic activity

In situ preparation of Ag@AgCl/Bio-veins composites and their photocatalytic activity and recyclability

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Frontiers of Chemical Science and Engineering 2023年第7期17卷 906-917页

作者： Min Zou Chao Tan Zhengqiu Yuan Ming Wu Jian Jian Lei Zhang Yan Zhang Zhou Ma Hu Zhou School of Resource&Environment and Safety Engineering Hunan University of Science and TechnologyXiangtan 411201China Key Laboratory of Theoretical Organic Chemistry and Functional Molecules Ministry of EducationFunctional Film Materials Engineering Research Center of Hunan ProvinceHunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and ConversionSchool of Chemistry and Chemical EngineeringHunan University of Science and TechnologyXiangtan 411201China School of Information and Electrical Engineering Hunan University of Science and TechnologyXiangtan 411201China

The industrial application of nano-photocatalysts in wastewater treatment has been severely restricted for a long time due to their difficult separation,poor reusability,and low *** this work,a facile strategy was proposed to enhance the photocatalytic activity and recovery performance of Ag@AgCl *** veins(Bio-veins)with a unique 3D porous construction were used as carriers for the in-situ growth of Ag@AgCl *** electron microscopy results showed that the Ag@AgCl nanoparticles were uniformly loaded on the surface and interior of the Bio-veins,and the size of the Ag@AgCl nanoparticles immobilized on the Bio-veins(50–300 nm)was significantly smaller than Ag@AgCl obtained by the co-precipitation method(1–3μm).The Bio-veins played a vital role in the photocatalysis reaction *** degradation efficiency of the Ag@AgCl/Bio-veins(CI4)was up to 3.50 times as high as pure Ag@***,the composites also exhibited excellent recyclability and stability under both visible and solar *** work provided a suitable strategy for nano-photocatalysts for practical application and may also offer new possibilities for the high-value utilization of biomass materials.

关键词： Ag@AgCl biological veins photocatalytic activity recyclability

Supercritical CO_(2)-Tailored 2D Oxygen-doped Amorphous Carbon Nitride for Enhanced photocatalytic activity

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Energy & Environmental Materials 2022年第3期5卷 912-917页

作者： Lina Du Qingyong Tian Xiaoli Zheng Wenjing Guo Wei Liu Yannan Zhou Feng Shi Qun Xu College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institutes of Advanced Technology Zhengzhou UniversityZhengzhou 450052China

Simultaneously adjusting the surface,crystallographic and electronic structures of nanomaterials provide a new avenue for rational design of advanced photocatalyst yet it is *** this work,a surface and structural engineering strategy is developed to simultaneously realize the 2D amorphous structure and oxygen(O)-doping in graphitic carbon nitride(g–C_(3)N_(4))via the assistance of supercritical carbon dioxide(SCCO_(2)).The 2D O-doped amorphous g-C_(3)N_(4)nanosheets display greatly enhanced photocatalytic CO_(2)reduction and methylene blue degradation *** synthesis method as well as the mechanism of the enhanced photocatalytic activity was investigated,wherein the introduction of 2D amorphous structure and O dopant in the g-C_(3)N_(4)contributes to the increased surface area,abundant active sites,wider visible-light absorption range and efficient charge separation property,and thus the outstanding photocatalytic activities can be *** photocatalytic CH_(4)evolution rate and MB degradation rete are 5.1 and 7.0 times enhancement over bulk crystalline g-C_(3)N_(4),*** work presents a great promising way for designing and developing advanced photocatalysts.

关键词： amorphous graphitic carbon nitride oxygen-doping photocatalytic activity supercritical carbon dioxide

CdBiO2Br nanosheets in situ strong coupling to carbonized polymer dots and improved photocatalytic activity for organic pollutants degradation

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Chinese Chemical Letters 2022年第12期33卷 5189-5195页

作者： Zhiyuan Pang Bin Wang Xingwang Yan Chongtai Wang Sheng Yin Huaming Li Jiexiang Xia School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China School of Chemistry and Chemical Engineering the Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan ProvinceHainan Normal UniversityHaikou 571158China

Carbonized polymer dots(CPDs)modified layer-structured CdBiO_(2)Br(CPDs/CdBiO_(2)Br)Z-scheme heterojunction hybrid material has been synthesized via simple solvothermal *** hybrid material with Z-scheme heterojunction can effectively maintain the original highly oxidizing holes of CdBiO_(2)Br and the highly reducing electrons of *** addition,the construction of heterostructure is beneficial to the migration and separation of photogenerated *** visible light irradiation,6 wt%CPDs/CdBiO_(2)Br showed the best catalytic activity for degradation of organic *** radical capture experiments and ESR analysis confirmed that the main active species are·O_(2)^(-)and h^(+).The decomposition process of organic pollutants was analyzed by ***,the probable visible light mechanism performance of CPDs/CdBiO_(2)Br as direct Z-scheme heterojunction photocatalytic materials was proposed.

关键词： Carbonized polymer dots CdBiO_(2)Br Direct Z-scheme heterojunction Pollutant degradation photocatalytic activity

photocatalytic activity of perovskite SrTiO_(3)catalysts doped with variable rare earth ions

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Rare Metals 2021年第5期40卷 1077-1085页

作者： Yue-Xin Song Wen-Qi Ma Jing-Jing Chen Jiao Xu Zhi-Yong Mao Da-Jian Wang Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Key Laboratory of Display Materials and Photoelectric Devices Ministry of EducationTianjin University of TechnologyTianjin 300384China

In this work,15 types of rare earth(Re)ions,including Y^(3+),La^(3+),Ce^(3+),Pr^(3+),Nd^(3+),Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+),Ho^(3+),Er^(3+),Tm^(3+),Yb^(3+)and Lu^(3+)doped perovskite SrTiO_(3)powders were synthesized by solgel *** influence of Re ions doping on the crystal structure,morphology and optical property as well as the photocatalytic activity for the photodegradation of rhodamine B(RhB)was investigated in detail when the synthesized Re ions doped SrTiO_(3)powders were served as *** presented results revealed that the crystal structure is invariable,whereas the morphology and the optical bandgap are variable for the resultant SrTiO_(3)powders when different Re ions were incorporated into the SrTiO_(3)*** relatedness between the morphology,optical property and photocatalytic activity of the synthesized SrTiO_(3)catalysts doped with variable Re ions were analyzed deeply,providing an insight into the influence factors on the photocatalytic activity of catalysts.

关键词： SrTiO_(3) Rare earth ions Doping photocatalytic activity

photocatalytic activity of cerium-doped mesoporous TiO_2 coated Fe_3O_4 magnetic composite under UV and visible light

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Journal of Rare Earths 2012年第4期30卷 355-360页

作者：石中亮杨兴满姚淑华 School of Applied Chemistry Shenyang University of Chemical Technology

A novel kind of magnetically separable photocatalyst of cerrium-doped mesoporous titanium dioxide coated magnetite （Ce/MTiO2/ Fe3O4） was prepared and its activities under UV and visible light were reported. The catalysts with Ce/MTiO2 shell and Fe3O4 core were prepared by coating photoactive Ce/MTiO2 onto a magnetic Fe3O4 core through the hydrolysis of tetrabutyltitanate （Ti（OBu）4, TBT） with precursors of ammonium ceric nitrate and TBT in the presence of Fe3O4 particles. The MTiO2 shell was for photocatalysis, the Fe3O4 core was for separation by the magnetic field and the doped Ce was used to enhance the photocatalytic activity of MTiO2. The morphological, structural and optical properties of the prepared samples were characterized by Bnmauer-Emmett-Teller （BET） surface area, transmission electron microscopy （TEM）, X-ray diffraction （XRD） and UV-vis absorption spectroscopy. The effect of cerrium-doped content on the photocatalytic activity was studied and the result revealed that 0.5 mol.% Ce/MTiO2/Fe3O4 exhibited highest photoactivity. The photocatalytic activities of obtained photocatalysts under UV and visible light were estimated by measuring the degradation rate of methylene blue （MB, 50 mg/L） in an aqueous solution. The results showed that the prepared photocatalyst was activated by visible light and used as effective catalyst in photooxi- dation reactions. In addition, the possibility of cyclic usage of the prepared photocatalyst was also confirmed. Moreover, Ce/MTiO2 was tightly bound to Fe3O4 and could be easily recovered from the medium by an external magnetic filed. So, the photocatalyst can be reused without any mass loss. It can therefore be potentially applied for the treatment of water contaminated by organic pollutants.

关键词： mesoporous titanium dioxide magnetite cerium-doping photocatalytic activity rare earths

photocatalytic activity of Mo+Fe Co-doped Titanium Dioxide Nanoparticles Prepared by Sol-Gel Method

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Journal of Wuhan University of Technology(Materials Science) 2013年第1期28卷 44-47页

作者：刘海林熊锐 Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education School of Physics and TechnologyWuhan University

Mo＋Fe co-doped TiO2 nano powders were synthesised by sol-gel method. X-ray diffraction and transmission electronic microscopy morphologies showed that the Mo＋Fe co-doped TiO2 nano powders were pure anatase phase, with the average crystallite size around 20 nm. UV-Vis and photocatalic activity measurements show that this Mo＋Fe co-doped TiO2 can absorb visible light, have higher separation efficiency of photoinduced electrons and holes, and possess higher photocatalytic activity compared with anatase TiO2. The enhanced photocatalytic activity of Mo＋Fe co-doped TiO2 verified that doping by transition metal ions can also modify the energy band and reduce the recombination centers in TiO2.

关键词： Mo+Fe co-doped Ti02, anatase photocatalytic activity