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柠檬酸络合法制备可见光响应型光催化剂CuO/BiVO4

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Abstract:

以Bi(NO3)3·5H2O和NH4VO3为原料,采用柠檬酸络合法制备新型可见光响应型复合光催化剂CuO/BiVO4。借助X射线衍射、全谱直读等离子体发射光谱仪、X射线光电子能谱仪、扫描电子显微镜、透射电子显微镜和紫外–可见漫反射光谱等表征粉体的结构和性能。结果表明不同Cu摩尔掺量的复合光催化剂仍保持纯单斜晶系白钨矿结构;掺杂Cu主要以CuO形式存在,且其实际含量与理论掺量基本一致;复合光催化剂平均一次粒径约200nm,比纯BiVO4的吸收边都有不同程度地红移。以10mg/L亚甲基蓝染料溶液为目标污染物,研究纯BiVO4和CuO/BiVO4的可见光催化活性,一定量Cu掺杂的催化剂活性明显优于纯BiVO4的,当Cu掺量为0.2%、可见光照射150min后,染料脱色率可达到88%以上,比纯BiVO4的提高约20%。

References

[1]  ? 刘守新, 刘鸿. 光催化及光电催化基础及应用[M]. 北京: 化学工业出版社, 2008: 74–75.
[2]  LIU Shouxin, LIU Hong. Basic Theory of Photo-catalysis and Photoelec- troncatalysis and Its Application. Beijing: Chemical Indastry Press, 2008: 74–75.
[3]  ? FUJISHIMA A, HONDA K. Electrochemical photolysis of water at a semiconductor electrode [J]. Nature, 1972, 238: 37.
[4]  ? TOKUNAGA S, KATO H, KUDO A. Selective preparation of monoclinic and tetragonal BiVO4 with Scheelite structure and their photocatalytic properties [J]. Chem Mater , 2001, 13(12): 4624–4628.
[5]  ? KUDO A, OMORI K, KATO H. A Novel aqueous process for preparation of crystal form-controlled and highly crystalline BiVO4 powder from layered vanadates at room temperature and its photocatalytic and photophysical properties [J]. J Am Chem Soc, 1999, 121(49): 11459– 11467.
[6]  ? ZHOU Lin, WANG Wenzhong, LIU Shengwei, et al. A sonochemical route to visible-light-driven high-activity BiVO4 photocatalyst [J]. J Mol Catal A: Chem , 2006, 252: 120–124.
[7]  ? XU Hui, LI Haiming, WU Chundu, et al. Preparation, characterization and photocatalytic properties of Cu-loaded BiVO4 [J]. Mater Sci Eng B, 2008, 147: 52–56.
[8]  ? ZHANG Aiping, ZHANG Jinzhi. Synthesis and characterization of Ag/BiVO4 composite photocatalyst [J]. Appl Surf Sci, 2010, 256: 3224–3227.
[9]  ? 戈磊, 崔立山. 新型可见光活性氧化钯/钒酸铋复合光催化剂的制备及其光催化性能[J]. 硅酸盐学报, 2008, 36(3): 320–324.
[10]  ? 戈磊. 新型Pt/BiVO4可见光活性光催化剂的制备和表征[J]. 无机材料学报, 2008, 23(3): 449–453.
[11]  GE Lei. Chin J Inorg Mater, 2008, 23(3): 449–453.
[12]  ? 张爱平, 张进治. Cu、Ag、Au掺杂BiVO4可见光催化剂的制备及性能研究[J]. 分子催化, 2010, 24(1): 51–56.
[13]  ZHANG Aiping, ZHANG Jinzhi. J Mol Catal A: Chem, 2010, 24(1): 51–56.
[14]  ? YIN Wanjian, WEI Suhuai, MOWAFAK M, et al, Doping properties of monoclinic BiVO4 studied by ?rst-principles density-functional theory [J]. Phys Rev B: Condens Matter, 2011, 83: 155102(1–7).
[15]  ? LONG Mingce, CAI Weimin, CAI Jun, et a1. Efficient photocatalytic degradation of phenol over Co3O4/BiVO4 composite under visible light irradiation [J]. J Phys Chem B, 2006, 110(41): 20211–20216.
[16]  ? 刘春艳. 纳米光催化及光催化环境净化材料[M]. 北京: 化学工业出版社, 2008: 115–126.
[17]  LIU Chunyan. Nano-photo-catalysis and Photo-catalytic Environment Purifying Materials. Beijing: Chemical Indastry Press, 2008: 115–126.
[18]  ? JIANG Haiqiong, HIROMITSU Endo, HIROTAKA Natori. Fabrication and photoactivities of spherical-shaped BiVO4 photocatalysts through solution combustion synthesis method [J]. J Eur Ceram Soc, 2008, 28: 2955–2962.
[19]  GE Lei, CUI LiShan. J Chin Ceram Soc, 2008, 36(3): 320–324.

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