Direct Coupling of Thermo- and Photocatalysis for Conversion of CO2-H2O into Fuels
Direct Coupling of Thermo- and Photocatalysis for Conversion of CO2-H2O into Fuels
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热催化和光催化直接耦合将 CO2-H2O 转化为燃料
DOI：
10.1002/cssc.201701472
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发表时间：
2017
期刊：
影响因子：
8.4
通讯作者：
Wang Yong
中科院分区：
文献类型：
--
作者：
Zhang Li;Kong Guoguo;Meng Yaping;Tian Jinshu;Zhang Lijie;Wan Shaolong;Lin Jingdong;Wang Yong
光催化二氧化碳还原为可再生碳氢化合物太阳能燃料被认为是同时解决全球能源和环境问题的一种有前途的策略。本研究的重点是光催化水裂解和热催化co2加氢在CO2-H2O转化为燃料中的直接耦合。具体来说，研究发现，在Au−Ru/ tio2上，热催化和光催化的直接耦合导致CO2-H2O转化为燃料的活性比光催化水分解高15倍（T= 358k； ch4选择性约99%）。这归因于光催化水裂解原位生成的氢原子对co2热催化加氢的促进作用。
Photocatalytic CO2reduction into renewable hydrocarbon solar fuels is considered as a promising strategy to simultaneously address global energy and environmental issues. This study focused on the direct coupling of photocatalytic water splitting and thermocatalytic hydrogenation of CO2in the conversion of CO2–H2O into fuels. Specifically, it was found that direct coupling of thermo‐ and photocatalysis over Au−Ru/TiO2leads to activity 15 times higher (T=358 K; ca. 99 % CH4selectivity) in the conversion of CO2–H2O into fuels than that of photocatalytic water splitting. This is ascribed to the promoting effect of thermocatalytic hydrogenation of CO2by hydrogen atoms generated in situ by photocatalytic water splitting.