Enhanced photocatalytic degradation of organic pollutants over basic bismuth (III) nitrate/BiVO₄ composite

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• 作者：Yuanyuan Liu ; Zeyan Wang ; Baibiao Huang ; Xiaoyang Zhang ; Xiaoyan Qin ; Ying Dai
• 关键词：Photocatalyst ; BiVO₄ ; Basic bismuth (III) nitrates ; Composite ; Hydroxyl
• 刊名：Journal of Colloid and Interface Science
• 出版年：2010
• 出版时间：1 August 2010
• 年：2010
• 卷：348
• 期：1
• 页码：211-215
• 全文大小：429 K

文摘

Basic bismuth (III) nitrate (BBN)/BiVO₄ composites were prepared by a coprecipitation method. A variety of techniques including X-ray powder diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), diffuse reflectance spectroscopy (DRS), N₂ adsorption, and X-ray photoelectron spectroscopy (XPS) were employed to characterize the resulting materials. The composite shows higher photocatalytic activity than BiVO₄ over degradation of organic pollutants (RhB, MO, phenol, and 2-propanol). A mechanism was proposed for the enhanced photocatalytic activity. The proposed mechanism was confirmed by experiments with hydroxyl radicals.