Ternary Ag/AgCl/BiOIO₃ composites for enhanced visible-light-driven photocatalysis

详细信息    查看全文

• 作者：Ting Xiong^a ; Huijun Zhang^a ; Yuxin Zhang^b ; Fan Dong^a ; ^{dfctbu@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ag/AgCl/BiOIO3 ; Ternary composite ; Visible-light photocatalysis ; Nitrogen oxide removal ; Charge seperation
• 刊名：Chinese Journal of Catalysis
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：36
• 期：12
• 页码：2155-2163
• 全文大小：3322 K

文摘

Ternary Ag/AgCl/BiOIO₃ composite photocatalysts are prepared by a facile method. Enhanced visible-light absorption and charge carrier separation are achieved after the introduction of Ag/AgCl particles into BiOIO₃ systems, as revealed by ultraviolet-visible diffuse-reflectance spectrometry, photocurrent response and electrochemical impedance spectroscopy. The Ag/AgCl/BiOIO₃ composites are applied to the visible-light photocatalytic oxidization of NO in air and exhibit an enhanced activity for NO removal in comparison with Ag/AgCl and pure BiOIO₃. A possible photocatalytic mechanism for Ag/AgCl/BiOIO₃ is proposed, which is related to the surface plasmon resonance effects of Ag metal and the effective carrier separation ability of BiOIO₃. This work provides insight into the design and preparation of BiOIO₃-based materials with enhanced visible-light photocatalysis ability.