光催化
材料科学
纳米复合材料
丙酮
甲醇
水溶液
表面等离子共振
化学工程
乙醛
甲烷
纳米技术
纳米颗粒
乙醇
催化作用
有机化学
化学
工程类
作者
Bin Yu,Yong Zhou,Peng Li,Wenguang Tu,Ping Li,Lanqin Tang,Jinhua Ye,Zhigang Zou
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2016-01-01
卷期号:8 (23): 11870-11874
被引量:136
摘要
The photocatalytic reduction of CO2 over Ag/TiO2 composites prepared with a simple silver mirror reaction method was investigated under UV-visible irradiation in both gas-phase (CO2 + water vapor) and aqueous solution (CO2-saturated NaHCO3 solution) systems. The as-prepared Ag/TiO2 nanocomposite exhibits efficient photocatalytic activity due to the surface plasmonic resonance and electron sink effect of the Ag component, which was found to be closely related to the size and loading amount of Ag. The rapid silver method is effective at curbing the size of Ag, so photocatalytic activity can be improved. Diverse organic chemical products were detected, including mainly methane and methanol as well as a small amount of C2 and C3 species such as acetaldehyde and acetone. Possible photocatalytic mechanisms were proposed. This artificial photosynthesis process may give a prosperous route to the removal of CO2 while simultaneously converting CO2 to valuable fuels based on highly efficient photocatalysts.
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