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制备方法对Bi_2WO_6光催化剂结构及可见光催化降解乙烯性能的影响 被引量:6

Effects of Preparation Methods on Bi_2WO_6 Structure and their Performance in Visible-Light Driven Photocatalytic Degradation of Ethylene
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摘要 通过高温固相法、微乳液法、水热法、醇水混合溶剂热法、和乙二醇溶剂热法制备出Bi_2WO_6光催化剂。采用X射线衍射(XRD)、场发射扫描电镜(SEM)、紫外-可见吸收光谱(UV-Vis)对样品的晶体结构、微观形貌、吸光性能进行表征,并考察其在可见光下降解乙烯的光催化性能。结果表明:制备方法对Bi_2WO_6光催化剂的微观结构和光催化性能都有明显的影响,其中高温固相法所得样品的颗粒粒径最大且易团聚,光催化活性最低,对乙烯的降解率仅为5.85%。乙二醇溶剂热法制备的Bi_2WO_6样品的平均粒径约为100~200 nm,禁带宽度为2.90 eV,对乙烯的降解率最高,为13.82%,比高温固相法提高了136.24%。 Bi2WO6 catalysts were prepared by solid-phase method,microemulsion method,hydrothermal method,ethanol-water mixed solvothermal method and ethylene glycol solvothermal method,respectively.Crystal structure,microstructure and light absorption performance were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM)and ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis).Photocatalytic activity of the catalysts was evaluated by ethylene degradation under visible-light irradiation.The results show that different preparation methods have obvious effects on the microstructure and photocatalytic performance of the Bi2WO6 photocatalysts.Samples prepared by the solid-phase method have the maximum particle size with easy agglomeration,which presents the poorest photocatalytic activity(5.85%).The average particle size of the sample prepared by the ethylene glycol solvothermal method is about 100~200 nm,and the band gap is 2.90eV.Its photocatalytic activity is 13.82%,which shows the highest ethylene degradation rate among the five methods.The degradation rate is 136.24%higher than that of the solid-phase method.
作者 徐梅 李莹影 王佳 宋贤良 叶盛英 XU Mei;LI Ying-ying;WANG Jia;SONG Xian-liang;YE Sheng-ying(College of Food Science,South China Agricultural University,Guangzhou 510642,China)
出处 《高校化学工程学报》 EI CAS CSCD 北大核心 2018年第2期386-392,共7页 Journal of Chemical Engineering of Chinese Universities
基金 国家自然科学基金(31371855) 广州市科技项目(2014J4100150)
关键词 Bi2WO6 制备方法 微观形貌 可见光催化 乙烯降解 Bi2WO6 preparation method microstructure visible-light photocatalysis ethylene degradation
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  • 1Lu, H. B.; Li, H.; Liao, L.; Li, J. C.; Tian, Y.; Shuai, M.; Hu M. F.; Zhu, B. P. Nanotechnology 2008, 19, 045605.
  • 2Shang, M.; Wang, W. Z.; Zhang, L.; Sun, S. M.; Wang, L.; Zhou, L. J. Phys. Chem. C 2009, 113, 14727.
  • 3Lan, Y.; Hu, C.; Hu, X.; Qu, J. Appl. Catal., B 2007, 73354.
  • 4Hu, C.; Guo, J.; Qu, J.; Hu, X. Langmuir2007, 23, 4982.
  • 5Hu, C.; Lan, Y.; Qu, J.; Hu, X.; Wang, A. J. Phys. Chem. B 2006, 110, 4066.
  • 6Ren, J.; Wang, W. Z.; Sun, S. M.; Zhang, L.; Chang, J. Appl. Catal., B 2009, 92, 50.
  • 7Wang, E; Huang, B. B.; Qin, X. Y.; Zhang, X. Y.; Dai, Y.; Wei, J. Y.; Whangbo, M-H. Angew. Chem., Int. Ed. 2008, 47 7931.
  • 8Li, F. B.; Li, X. Z. Appl. Catal.,A 2002, 228, 15.
  • 9Arabatzis, I. M.; Stergiopoulos, T.; Andreeva, D.; Kitova, S. Neophytides, S. G.; Falaras, P. J. Catal. 2003, 220, 127.
  • 10Lam, S. W.; Chiang, K.; Lim, T. M.; Amal, R.; Low, G. K. C Appl. Catal., B 2007, 72, 363.

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