Photocatalytic oxidation of gas-phase Hg0 by carbon spheres supported visible-light-driven CuO-TiO2

被引：40
作者：
Wu, Jiang [1 ]
Li, Chaoen [2 ]
Chen, Xiantuo [1 ]
Zhang, Jing [1 ]
Zhao, Lili [1 ]
Huang, Tianfang [1 ]
Hu, Tao [1 ]
Zhang, Chong [1 ]
Ni, Bu [1 ]
Zhou, Xiao [1 ]
Liang, Pankun [1 ]
Zhang, Wenbo [1 ]
机构：
[1] Shanghai Univ Elect Power, Coll Energy & Mech Engn, Shanghai 200090, Peoples R China
[2] Tongji Univ, Sch Mech Engn, Shanghai 201804, Peoples R China
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 46卷
关键词：
Carbon spheres; TiO2; CuO; Photocatalysis; Gas-phase Hg-0; ELEMENTAL MERCURY; HYDROGEN-PRODUCTION; DOPED TIO2; TITANIUM-DIOXIDE; CODOPED TIO2; ADSORPTION; CUO; PERFORMANCE; REMOVAL; CATALYSTS;
D O I：
10.1016/j.jiec.2016.11.012
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simplified approach for the fabrication of CuO/TiO2@C is demonstrated. In this study, low cost CuO/ TiO2@C photocatalysts (CSs loading 0.25-2 wt.%) were prepared, characterized and evaluated for gas phase He oxidation. The obtained CuO/TiO2@C photocatalysts were used to remove gaseous elemental mercury under UV light and LED respectively, and the optimum doping of content of CSs was determined. The results showed that the CuOiTiO(2)@C photocatalysts were highly efficient in oxidizing Hg, reaching above 64% when the CSs doping reached 0.5 wt.%. We have proposed that the probable mechanism by which CuOiTiO(2)@C photocatalysts remove gaseous elemental mercury: with CSs doping, CSs can act as sensitizer and transfer electrons to the semiconductors, triggering the formation of very reactive radicals to improve photocatalytic efficiency. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：416 / 425
页数：10
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