光催化材料因可以利用太阳能净化环境, 受到广泛关注. 一些含铋复合氧化物半导体可直接被可见光激发, 更有效地利用太阳能, 实现有机污染物的矿化, 成为近期光催化材料研究领域的热点之一. 本文概述了Bi2WO6、BiVO4和Bi2MoO6三种常见的含铋复合氧化物可见光催化材料体系的近期研究进展. 通过合成方法的优选、晶粒成核和生长的调节, 实现晶粒尺寸、形貌、结晶度等微结构的控制, 从而获得小尺寸、高表面积的光催化材料, 无论是在有机染料、苯酚和乙醛等多种模拟污染物的矿化, 还是抗菌等方面, 它们皆呈现出优秀的可见光催化性能. 通过进一步发展, 含铋复合氧化物有望实现在环境净化领域的应用.
Photocatalysts scould utilize solar energy to remedy environmental pollutions thus attract world wide attention. Some bismuth-containing complex oxides could be activated by visible light and mineralize organic pollutants. In this paper we reviewed recent progresses on the development of Bi2WO6, BiVO4 and Bi2MoO6 photocatalysts. By controlling the particle size, morphology, crystallinity and other microstructures via different methods, the photocatalytic activities in the degradation of organic dyes, colorless model pollutants such as phenol and acetaldehyde, and disinfection of these visible light induced photocatalysts were greatly enhanced. Through further development, bismuth- containing complex oxides are hopeful to be applied in the field of environmental remediation.
参考文献
| [1] | |
| [2] | Stoltzfus M W, Woodward P M, Seshadri R, et al. Structure and bonding in SnWO4, PbWO4, and BiVO4: lone pairs vs inert pairs. Inorg. Chem., 2007, 46(10): 3839-3850.[2] Kudo A, Kato H, Tsuji I. Strategies for the development of visible-light-driven photocatalysts for water splitting. Chem. Lett., 2004, 33(12): 1534-1539.[3] Ricote J, Pardo L, Castro A, et al. Study of the process of mechanochemical activation to obtain aurivillius oxides with n=1. J. Solid State Chem., 2001, 160(1): 54-61.[4] Kudo A, Hijii S. H2 or O2 evolution from aqueous solutions on layered oxide photocatalysts consisting of Bi3+ with 6s2 configuration and d0 transition metal ions. Chem. Lett., 1999, 28(10): 1103-1104.[5] Tang J W, Zou Z G, Ye J H. Photocatalytic decomposition of organic contaminants by Bi2WO6 under visible light irradiation. Catal. Lett., 2004, 92(1/2): 53-56.[6] Fu H B, Pan C S, Yao W Q, et al. Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6, J. Phys. Chem. B, 2005, 109(47): 22432-22439.[7] Tang J W, Zou Z G, Ye J H. Efficient photocatalytic decomposition of organic contaminants over CaBi2O4 under visible-light irradiation. Angew. Chem. Int. Edit., 2004, 43(34): 4463-4466.[8] 谢立进. 铋系复合氧化物纳米晶光催化材料的制备及表征. 青岛: 中国海洋大学硕士论文, 2006.[9] Zhang C, Zhu Y F. Synthesis of square Bi2WO6 nanoplates as high-activity visible-light-driven photocatalysts. Chem. Mater., 2005, 17(13): 3537-3545.[10] Zhu S B, Xu T G, Fu H B, et al. Synergetic effect of Bi2WO6 photocatalyst with C60 and enhanced photoactivity under visible irradiation. Environ. Sci. Technol., 2007, 41(17): 6234-6239.[11] Fu H B, Zhang S C, Xu T G, et al. Photocatalytic degradation of RhB by fluorinated Bi2WO6 and distributions of the intermediate products. Environ. Sci. Technol., 2008, 42(6): 2085-2091.[12] Tian G H, Chen Y J, Zhou W, et al. Facile solvothermal synthesis of hierarchical flower-like Bi2MoO6 hollow spheres as high performance visible-light driven photocatalysts. J. Mater. Chem., 2011, 21(3): 887-892.[13] Wu L, Bi J H, Li Z H, et al. Rapid preparation of Bi2WO6 photocatalyst with nanosheet morphology via microwave-assisted solvothermal synthesis. Catal. Today, 2008, 131(1-4): 15-20.[14] Chen Z, Qian L W, Zhu J, et al. Controlled synthesis of hierarchical Bi2WO6 microspheres with improved visible-light-driven photocatalytic activity. Crystengcomm., 2010, 12(7): 2100-2106.[15] Wang C Y, Zhang H, Li F, et al. Degradation and mineralization of bisphenol a by mesoporous Bi2WO6 under simulated solar light irradiation. Environ. Sci. Technol., 2010, 44(17): 6843-6848.[16] Zhang L S, Wang W Z, Zhou L, et al. Bi2WO6 nano- and microstructures: shape control and associated visible-light-driven photocatalytic activities. Small, 2007, 3(9): 1618-1625.[17] Gao E P, Wang W Z, Shang M, et al. Synthesis and enhanced photocatalytic performance of graphene-Bi2WO6 composite. Phys. Chem. Chem. Phys., 2011, 13(7): 2887-2893.[18] Shang M, Wang W Z, Zhang L, et al. 3D Bi2WO6/TiO2 hierarchical heterostructure: Controllable synthesis and enhanced visible photocatalytic degradation performances. J. Phys. Chem. C, 2009, 113(13): 14727-14731.[19] Shang M, Wang W Z, Sun S M, et al. Bi2WO6 nanocrystals with high photocatalytic activities under visible light. J. Phys. Chem. C, 2008, 112(28): 10407-10411.[20] Zhang L S, Wang W Z, Chen Z G, et al. Fabrication of flower-like Bi2WO6 superstructures as high performance visible-light driven photocatalysts. J. Mater. Chem., 2007, 17(24): 2526-2532.[21] Zhang Z J, Wang W Z, Shang M, et al. Low-temperature combustion synthesis of Bi2WO6 nanoparticles as a visible-light-driven photocatalyst. J. Hazard. Mater., 2010, 177(1/2/3): 1013-1018.[22] Zhao W, Chen C, Li X, et al. Photodegradation of sulforhodamine-B dye in platinized titania dispersions under visible light irradiation: influence of platinum as a functional co-catalyst. J. Phys. Chem. B, 2002, 106(19): 5022-5028.[23] Zhao Y, Xie Y, Zhu X, et al. Surfactant-free synthesis of hyperbranched monoclinic bismuth vanadate and its applications in photocatalysis, gas sensing, and lithium-ion batteries. Chem. Eur. J., 2008, 14(5): 1601-1606.[24] Butler M A. Photoelectrolysis and physical-properties of semiconducting electrode WO3. J. Appl. Phys., 1977, 48(5): 1914-1920.[25] Hagfeldt A, Gratzel M. Light-induced redox reactions in nanocrystalline systems. Chem. Rev., 1995, 95(1): 49-68.[26] Shang M, Wang W Z, Xu H L. New Bi2WO6 Nanocages with high visible-light-driven photocatalytic activities prepared in refluxing EG. Cryst. Growth & |
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