Preparation of N-Doped Bi2WO6 Microspheres for Efficient Visible Light-Induced Photocatalysis

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• 作者：Bolin Tang (1) (2)
  Guohua Jiang (1) (2)
  Zhen Wei (1) (2)
  Xia Li (1) (2)
  Xiaohong Wang (1) (2)
  Tengteng Jiang (1) (2)
  Wenxing Chen (1) (2)
  Junmin Wan (1)
  
• 关键词：Hydrothermal method ; Photocatalysis ; Microstructure and property
• 刊名：Acta Metallurgica Sinica (English Letters)
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：27
• 期：1
• 页码：124-130
• 全文大小：2,061 KB
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• 作者单位：Bolin Tang (1) (2)
  Guohua Jiang (1) (2)
  Zhen Wei (1) (2)
  Xia Li (1) (2)
  Xiaohong Wang (1) (2)
  Tengteng Jiang (1) (2)
  Wenxing Chen (1) (2)
  Junmin Wan (1)
  
  1. Department of Materials Engineering, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, 310018, China
  2. Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China
  
• ISSN：2194-1289

文摘

The N-doped bismuth tungstate (Bi2WO6) photocatalysts with high visible light activity were prepared by the hydrothermal method using urea as a nitrogen source. The as-prepared N-doped Bi2WO6 samples were characterized by X-ray diffraction, scanning electron microscopy, specific surface area, photocurrent analysis, and UV–Vis diffuse reflectrance spectroscopy. The photocatalytic activity was evaluated by photocatalytic degradation of rhodamine B (RhB) solution under visible light irradiation. The photocatalytic mechanisms were analyzed by active species trapping experiments which revealed that the holes were the main active species of N-doped Bi2WO6 products in aqueous solution under visible light irradiation, rather than ·OH and O 2 ?? . With the assistance of H2O2, the photocatalytic activity for degradation of RhB could be further improved because H2O2 reacted with conduction band electrons to generate more hydroxyl radicals.