Morphology controlled synthesis of CeTiO4 using molten salts and enhanced photocatalytic activity for CO2 reduction
Hailili, R (Hailili, Reshalaiti)[ 1,2 ]; Jacobs, DL (Jacobs, Daniel L.)[ 3,4 ]; Zang, L (Zang, Ling)[ 3,4 ]; Wang, CY (Wang, Chuanyi)[ 1,2 ]
2018
发表期刊APPLIED SURFACE SCIENCE
ISSN0169-4332
卷号456期号:10页码:360-368
摘要

Incorporation of visible light active semiconductors without doping noble (transition) metals results in remarkably different construction principle of visible light driven photocatalysts in which light absorptions and charge transfer become more flexible and efficiencies are no longer limited in ultraviolet (UV) region. Herein, we provide a strategy to design efficient photocatalysts by introducing visible light sensitive Ce2O3 into UV active TiO2 via molten salt synthesis (MSS) of CeTiO4 for visible light CO2 reduction. By changing salt composition in the MSS process, the nanostructured CeTiO4 was prepared and exhibited distinct morphologies e.g., nanorods (NaCl-NaH2PO4), polyhedrons (KCl-NaCl) and cubic (KCl-Na2SO4), respectively. Of the different morphologies, the nanorods of CeTiO4 showed best photoactiviy with quantum efficiencies of 0.36% and 0.065% for CO and CH4 formation, respectively. The unique morphologies well positioned band edges cause such obvious differences and co-contribute to the high performance effectiveness. This study demonstrates a strategy for the rational design and fabrication of visible light driven photocatalysts with controlled morphology, which in turn, can enhance the control and production of value-added products of CO2 reduction. This is an important step towards realizing the utilization of renewable energy sources, such as solar power, to reduce the concentration of atmospheric CO2 and form green energy sources.

关键词Cetio4 Molten Salt Synthesis Visible Light Co2 Photoreduction
DOI10.1016/j.apsusc.2018.06.048
收录类别SCI
WOS记录号WOS:000441281300041
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5554
专题中国科学院特殊环境功能材料与器件重点试验室
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
2.Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Shaanxi, Peoples R China
3.Univ Utah, Nano Inst Utah, Salt Lake City, UT 84112 USA
4.Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA
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Hailili, R ,Jacobs, DL ,Zang, L ,et al. Morphology controlled synthesis of CeTiO4 using molten salts and enhanced photocatalytic activity for CO2 reduction[J]. APPLIED SURFACE SCIENCE,2018,456(10):360-368.
APA Hailili, R ,Jacobs, DL ,Zang, L ,&Wang, CY .(2018).Morphology controlled synthesis of CeTiO4 using molten salts and enhanced photocatalytic activity for CO2 reduction.APPLIED SURFACE SCIENCE,456(10),360-368.
MLA Hailili, R ,et al."Morphology controlled synthesis of CeTiO4 using molten salts and enhanced photocatalytic activity for CO2 reduction".APPLIED SURFACE SCIENCE 456.10(2018):360-368.
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