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过程工程学报 ›› 2016, Vol. 16 ›› Issue (5): 895-900.DOI: 10.12034/j.issn.1009-606X.216184

• 材料工程专栏 • 上一篇    

低温固相反应合成Bi2WO6粉体及其可见光光催化性能

周林1,晋传贵2,余意1,池方丽1,吕耀辉1,冉松林1   

  1. 1. 安徽工业大学材料科学与工程学院
    2. 安徽工业大学 材料科学与工程学院
  • 收稿日期:2016-04-18 修回日期:2016-07-01 出版日期:2016-10-20 发布日期:2016-10-14
  • 通讯作者: 冉松林 songlin@ahut.edu.cn

Low-temperature Solid-state Synthesis of Bi2WO6 Powders and Its Visible-light Photocatalytic Activity

ZHOU Lin 1,JIN Chuan-gui 2,YU Yi 1,CHI Fang－li 1,LV Yao-hu 1,RAN Song-lin 1   

  1. 1. School of Materials Science and Engineering, Anhui University of Technology
    2. School of Materials and Engineering, Anhui University of Technology
  • Received:2016-04-18 Revised:2016-07-01 Online:2016-10-20 Published:2016-10-14
  • Contact: RAN Song-lin songlin@ahut.edu.cn

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摘要： 以Bi(NO3)3?5H2O和Na2WO4?2H2O为原料，采用固相法直接合成Bi2WO6粉体，研究了反应温度和保温时间对产物物相、形貌及可见光光催化性能的影响. 结果表明，350℃下保温2 h所得粉体含少量Bi2O3和Na2W4O13杂质，但光催化性能最好，可见光照射90 min对0.01 mmol/L RhB溶液的降解率达95%，且经5次循环后光催化活性和化学稳定性良好.

Abstract: Bi2WO6 powders were synthesized by a direct solid-state reaction between Bi(NO3)3?5H2O and Na2WO4?2H2O. The effects of calcining temperature and time on the phase composition, morphology and photocatalytic activity under the visible light irradiation were investigated. The results indicated that the powders synthesized at 350℃ for 2 h contained small amount of Bi2O3 and Na2W4O13 phase as impurities, but exhibited the highest photocatalytic activity. The as-synthesized powders could degrade 0.01 mmol/L RhB solution by 95% after irradiation under visible light for 90 min. In addition, the as-synthesized powders still remained excellent photocatalytic activity and chemical stability even after 5 times cycling tests.

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