Photocatalytic properties of BiOI synthesized by a simple hydrothermal process

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• 作者：Huiquan Li ; Qingfeng Jia ; Yumin Cui ; Suhua Fan
• 关键词：Hydrothermal method ; BiOI ; Nanoparticles ; Crystal structure ; Photocatalysis
• 刊名：Materials Letters
• 出版年：2013
• 出版时间：15 September, 2013
• 年：2013
• 卷：107
• 期：Complete
• 页码：262-264
• 全文大小：1381 K

文摘

BiOI nanoparticles were successfully prepared by a simple hydrothermal process at 433 K, and characterized by various techniques. The photocatalytic property and mechanism of BiOI were investigated by the degradation of methyl orange (MO) and methylene blue (MB) in aqueous solution under UV and visible light irradiation. The results indicated that BiOI had a tetragonal crystal structure, BET surface area of 30.8 m² g^?1, and band-gap energy of 1.75 eV. The UV and visible light photoactivity of BiOI was higher than that of TiO₂ (P25), and O₂^?, h⁺, and H₂O₂ played important roles in the photo-degradation of MO and MB.