writer：Bolin Tang, Guohua Jiang*?, Xia Li, Zhen Wei, Xiaohong Wang, Tengteng Jiang, Wenxing Chen, Junmin Wan
keywords：Hydrothermal method, Photocatalysis, Microstructures and properties
source：期刊
specific source：Acta Metallurgica Sinica (English Letters), 2014, 27(1), 124-130.
Issue time：2014年
 The N-doped 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 (XRD), scanning electron microscopy (SEM), specific surface area, photocurrent analysis and UV-vis diffuse reflectrance spectroscopy (DRS). 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 the holes are the main active species of N-doped Bi₂WO₆ products in aqueous solution under visible light irradiation, rather than rather than ?OH and O₂^??. 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.