Photocatalytic reduction of Cr(VI) with TiO₂ film under visible light

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• 作者：Quanping Wu ; Jun Zhao ; Guohui Qin ; Chengyang Wang ; Xinli Tong ; Song Xue
• 关键词：Photocatalytic reduction ; Dye-sensitization ; TiO2 film ; Chromium (VI) ; Electron transfer
• 刊名：Applied Catalysis B: Environmental
• 出版年：2013
• 出版时间：October-November, 2013
• 年：2013
• 卷：142-143
• 期：Complete
• 页码：142-148
• 全文大小：2035 K

文摘

The performance of photocatalytic reduction of chromium (VI) via a new TiO₂ film and a platinum anode was systematically evaluated. The as-prepared TiO₂ film is composed of a dye-sensitized zone and a catalysis zone. Charge separation was accomplished with electron transferring to the catalysis zone and positive charge transforming to an anode. A powerful reduction ability of the reaction system was achieved in the absence of any organics under visible light irradiation. Several parameters including pH, dissolved O₂, the primary active species, the durability of the as-synthetized film and so on were investigated.