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

Author:

Liu Peng1,Men Yu‐Long2,Meng Xin‐Yu2,Peng Chong3,Zhao Yiyi2,Pan Yun‐Xiang12ORCID

Affiliation:

1. School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University 200240 Shanghai P. R. China

2. Department of Chemical Engineering School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 200240 Shanghai P. R. China

3. State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 116024 Dalian Liaoning P. R. China

Abstract

AbstractBy 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 CO2δ−, which can be easily hydrogenated into CH4 via a CO2δ−→HCOO*→HCO*→CH*→CH4 path, thus boosting selective photoreduction of CO2 to CH4. This offers a new way to achieve selective photoreduction of CO2.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

General Chemistry,Catalysis

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