Bi2 WO6的禁带宽度窄(2．7 eV)，能吸收紫外光和可见光，同时具有形貌可控，氧化性强，耐光腐蚀，无毒无污染等优点，是一类非常有前途的可见光光催化材料.近年来的相关研究，主要是通过改性来解决单质Bi2 WO6的光量子效率一般和光生电子-空穴易复合问题.最为常用的是掺杂改性，其对Bi2 WO6的电子结构、外观形貌、粒子尺寸、比表面积、表面特性的调控均有重要作用，能够提高该类催化剂的量子效率、缩小禁带宽度、降低电子-空穴复合率以提高其光催化性能.从金属掺杂、非金属掺杂、共掺杂等方面集中介绍了各种掺杂手段对Bi2 WO6光催化性能的研究进展，阐明了光催化反应机理，并对其下一步的研究重点进行了展望.
The band gap of Bi2 WO6 is only 2.7 eV,which allows it absorb ultraviolet and visible light at the same time.With the characteristics of controllable morphology,strong oxidizing property,light corrosion re-sistance,non-toxic and non-polluting,Bi2 WO6 becomes an ideal material for visible light photocatalysis.How-ever,the quantum efficiency of pure Bi2 WO6 is relatively low,photo generated electron-hole recombine easily. So,further modification of Bi2 WO6 has become a hot research topic in recent years.At present,the research method of Bi2 WO6 is mainly focused on the doping modification.The doping modification has important effects on the electronic structure,appearance,particle size and surface properties of the catalyst,so as to improve the quantum efficiency,reduce the width of the band gap and electron hole recombination rate,thus improve the photocatalytic capability.In this paper,we introduced the latest progress in the study of the doped Bi2 WO6 pho-tocatalyst from mental doping,nonmetals doping,co-doping and so on.We also clarified the mechanism of pho-tocatalytic reaction and prospected for its development.
参考文献
| [1] | Ling Wu;Jinhong Bi;Zhaohui Li.Rapid preparation of Bi2WO6 photocatalyst with nanosheet morphology via microwave-assisted solvothermal synthesis[J].Catalysis Today,20081/4(1/4):15-20. |
| [2] | Zhijie Zhang;Wenzhong Wang;Erping Gao.Photocatalysis Coupled with Thermal Effect Induced by SPR on Ag-Loaded Bi2WO6 with Enhanced Photocatalytic Activity[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201249(49):25898-25903. |
| [3] | Chinmoy Bhattacharya;Heung Chan Lee;Allen J. Bard.Rapid Screening by Scanning Electrochemical Microscopy (SECM) of Dopants for Bi2WO6 improved Photocatalytic Water Oxidation with Zn Doping[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201319(19):9633-9640. |
| [4] | Zhang LS;Wang WZ;Zhou L;Xu HL.Bi2WO6 nano- and microstructures: Shape control and associated visible-light-driven photocatalytic activities[J].Small,20079(9):1618-1625. |
| [5] | Sun, Z.;Li, X.;Guo, S.;Wang, H.;Wu, Z..One-step synthesis of Cl--doped Pt(IV)/Bi_2WO_6 with advanced visible-light photocatalytic activity for toluene degradation in air[J].Journal of Colloid and Interface Science,2013:31-38. |
| [6] | Zhihua Sun;Jingjing Guo;Shenmin Zhu.A high-performance Bi2WO6-graphene photocatalyst for visible light-induced H2 and O2 generation[J].Nanoscale,20144(4):2186-2193. |
| [7] | Guo, Y.;Zhang, G.;Gan, H..Synthesis, characterization and visible light photocatalytic properties of Bi _2WO _6/rectorite composites[J].Journal of Colloid and Interface Science,2012:323-329. |
| [8] | Guo, Y.;Zhang, G.;Gan, H.;Zhang, Y..Micro/nano-structured CaWO _4/Bi _2WO _6 composite: Synthesis, characterization and photocatalytic properties for degradation of organic contaminants[J].Dalton transactions: An international journal of inorganic chemistry,201241(41):12697-12703. |
| [9] | Li, X.;Huang, R.;Hu, Y.;Chen, Y.;Liu, W.;Yuan, R.;Li, Z..A templated method to Bi _2WO _6 hollow microspheres and their conversion to double-shell Bi _2O _3/Bi _2WO _6 hollow microspheres with improved photocatalytic performance[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,201211(11):6245-6250. |
| [10] | Jingxiang Low;Jiaguo Yu;Qin Li.Enhanced visible-light photocatalytic activity of plasmonic Ag and graphene co-modified Bi2WO6 nanosheets[J].Physical chemistry chemical physics: PCCP,20143(3):1111-1120. |
| [11] | Zhijie Zhang;Wenzhong Wang;Erping Gao;Meng Shang;Jiehui Xu.Enhanced photocatalytic activity of Bi_2WO_6 with oxygen vacancies by zirconium doping[J].Journal of hazardous materials,2011:255-262. |
| [12] | Hongwei Huang;Kurt Liu;Kai Chen.Ce and F Comodification on the Crystal Structure and Enhanced Photocatalytic Activity of Bi2WO6 Photocatalyst under Visible Light Irradiation[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201426(26):14379-14387. |
| [13] | Guoqiang Tan;Jing Huang;Lili Zhang.An enhanced visible-light-driven photocatalyst: Conduction band control of Bi_2WO_6 crystallites by Cu ion modification[J].CERAMICS INTERNATIONAL,20148 Pt.A(8 Pt.A):11671-11679. |
| [14] | Lai, K.;Wei, W.;Zhu, Y.;Guo, M.;Dai, Y.;Huang, B..Effects of oxygen vacancy and N-doping on the electronic and photocatalytic properties of Bi _2MO _6 (M=Mo, W)[J].Journal of Solid State Chemistry,2012:103-108. |
| [15] | Li, Wen Ting;Huang, Wan Zhen;Zhou, Huan;Yin, Mao Yong;Zheng, Yi Fan;Song, Xu Chun.Synthesis and photoactivity enhancement of Ba doped Bi2WO6 photocatalyst[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2015Apr.(Apr.):432-437. |
| [16] | Ying Liu;Weimin Wang;Zhengyi Fu.Nest-like structures of Sr doped Bi_2WO_6: Synthesis and enhanced photocatalytic properties[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,201116(16):1264-1270. |
| [17] | Hsieh CY;Fung KZ.Effect of divalent dopants on defect structure and electrical properties of Bi2WO6[J].The journal of physics and chemistry of solids,20082/3(2/3):302-306. |
| [18] | 唐玉朝;黄显怀;俞汉青;胡春.非金属掺杂改性TiO2光催化剂的机理[J].化学进展,2007(2):225-233. |
| [19] | 高晓明;付峰;吕磊;武玉飞;王静;李稳宏.自制Cu-Bi2WO6的表征及其对苯酚的光催化降解[J].化工环保,2012(2):181-184. |
| [20] | Dumrongrojthanath, P.;Thongtem, T.;Phuruangrat, A.;Thongtem, S..Synthesis and characterization of hierarchical multilayered flower-like assemblies of Ag doped Bi_2WO_6 and their photocatalytic activities[J].Superlattices and microstructures,2013:196-203. |
| [21] | Ran Chen;Chaohao Hu;Shuai Wei.Synthesis and Activity of Ag-doped Bi_2WO_6 Photocatalysts[J].Materials Science Forum,2013:560-566. |
| [22] | Ren, Fengzhu;Zhang, Jihua;Wang, Yuanxu.Enhanced photocatalytic activities of Bi2WO6 by introducing Zn to replace Bi lattice sites: a first-principles study[J].RSC Advances,201537(37):29058-29065. |
| [23] | XuChunSong;Yi FanZheng;Rong Ma;Yao YuanZhang;Hao YongYin.Photocatalytic activities of Mo-doped Bi_2WO_6 three-dimensional hierarchical microspheres[J].Journal of hazardous materials,20111(1):186-191. |
| [24] | R. Rangel;P. Bartolo-Perez;E. Martinez.Catalytic activity and X-ray photoelectron spectroscopy performance of Bi2Mo_xW(1-x)O6 solid-solutions[J].Catalysis science & technology,20124(4):847-852. |
| [25] | E.P. Kharitonova;V.I. Voronkova;A.B. Gagor.Phase transitions and electrical properties of Bi_2W_(1-x)Nb_xO_(6-y) and Bi_2W_(1-x)Ta_xO_(6-y)[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2013:90-95. |
| [26] | Jing Huang;Guoqiang Tan;Huijun Ren;Ao Xia;Yangyang Luo.Multi-factors on photocatalytic properties of Y-doped Bi_2WO_6 crystallites prepared by microwave-hydrothermal method[J].Crystal Research and Technology: Journal of Experimental and Industrial Crystallography,20147(7):467-473. |
| [27] | Cao, Ranran;Huang, Hongwei;Tian, Na;Zhang, Yihe;Guo, Yuxi;Zhang, Tierui.Novel Y doped Bi2WO6 photocatalyst: Hydrothermal fabrication, characterization and enhanced visible-light-driven photocatalytic activity for Rhodamine B degradation and photocurrent generation[J].Materials Characterization,2015:166-172. |
| [28] | Yu Tian;Lide Zhang;Junxi Zhang.A superior visible light-driven photocatalyst: Europium-doped bismuth tungstate hierarchical microspheres[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2012:24-28. |
| [29] | Kumar, B. Vijaya;Prasad, Muvva D.;Vithal, M..Enhanced visible light photocatalytic activity of Sn doped Bi2WO6 nanocrystals[J].Materials Letters,2015Aug.1(Aug.1):200-202. |
| [30] | Song, Xu Chun;Zhou, Huan;Huang, Wan Zhen;Wang, Ling;Zheng, Yi Fan.Enhanced Photocatalytic Activity of Nano-Bi2WO6 by Tin Doping[J].Current Nanoscience,20155(5):627-632. |
| [31] | E.P. Kharitonova;DA Belov;A.B. Gagor.Polymorphism and properties of Bi_2WO_6 doped with pentavalent antimony[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2014:308-314. |
| [32] | Gangqiang Zhu;Jia Liang;Mirabbos Hojamberdiev;Sara Aldabe Bilmes;Xiumei Wei;Peng Liu;Jianping Zhou.Ethylenediamine (EDA) - assisted hydrothermal synthesis of nitrogen-doped Bi_2WO_6 powders[J].Materials Letters,2014May.1(May.1):216-219. |
| [33] | Yumin Cui;Huiquan Li;Wenshan Hong.The effect of carbon content on the structure and photocatalytic activity of nano-Bi2WO6 powder[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2013:151-160. |
| [34] | Lai, K;Zhu, Y.;Lu, J.;Dai, Y.;Huang, B..N- and Mo-doping Bi2WO6 in photocatalytic water splitting[J].Computational Materials Science,2013:88-92. |
| [35] | Huang, Jing;Tan, Guoqiang;Ren, Huijun;Yang, Wei;Xu, Chi;Zhao, Chengcheng;Xia, Ao.Photoelectric Activity of a Bi2O3/Bi2WO6-xF2x Heterojunction Prepared by a Simple One-Step Microwave Hydrothermal Method[J].ACS applied materials & interfaces,201423(23):21041-21050. |
| [36] | Wang, Tianye;Xiao, Guosheng;Li, Chenyang;Zhong, Shuang;Zhang, Fengjun.One-step synthesis of a sulfur doped Bi(2)W0(6)/Bi(2)0(3) composite with enhanced visible-light photocatalytic activity[J].Materials Letters,2015Jan.1(Jan.1):81-84. |
| [37] | 余忠雄;向垒;钟方龙;李彦文;莫测辉;蔡全英;黄献培;吴小莲;赵海明.pH对低温燃烧法合成钨酸铋光催化降解罗丹明B的影响[J].无机材料学报,2015(05):535-541. |
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