Electronic Interactions on Platinum/(Metal-Oxide)-Based Photocatalysts Boost Selective Photoreduction of CO2 to CH4

被引:55
|
作者
Liu, Peng [1 ]
Men, Yu-Long [2 ]
Meng, Xin-Yu [2 ]
Peng, Chong [3 ]
Zhao, Yiyi [2 ]
Pan, Yun-Xiang [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Dept Chem Engn, Shanghai 200240, Peoples R China
[3] Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
CH4; CO2; Interfacial Interaction; Metal Oxide; Photocatalysis; CHARGE SEPARATION; CARBON-MONOXIDE; IN-SITU; OXIDATION; PLATINUM; RECOMBINATION; PARTICLES; OXYGEN;
D O I
10.1002/anie.202309443
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
By supporting platinum (Pt) and cadmium sulfide (CdS) nanoparticles on indium oxide (In2O3), we fabricated a CdS/Pt/In2O3 photocatalyst. Selective photoreduction of carbon dioxide (CO2) to methane (CH4) was achieved on CdS/Pt/In2O3 with electronic Pt-In2O3 interactions, with CH4 selectivity reaching to 100 %, which is higher than that on CdS/Pt/In2O3 without electronic Pt-In2O3 interactions (71.7 %). Moreover, the enhancement effect of electronic Pt-(metal-oxide) interactions on selective photoreduction of CO2 to CH4 also occurs by using other common metal oxides, such as photocatalyst supports, including titanium oxide, gallium oxide, zinc oxide, and tungsten oxide. The electronic Pt-(metal-oxide) interactions separate photogenerated electron-hole pairs and convert CO2 into CO2 & delta;-, which can be easily hydrogenated into CH4 via a CO2 & delta;-& RARR;HCOO*& RARR;HCO*& RARR;CH*& RARR;CH4 path, thus boosting selective photoreduction of CO2 to CH4. This offers a new way to achieve selective photoreduction of CO2.
引用
收藏
页数:10
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