Pd-SnO2 interface enables synthesis of syngas with controllable H-2/CO ratios by electrocatalytic reduction of CO2
Zhao, Ning 1Deng, Liu 2Liu, You-Nian 2He, Haichuan 2Xia, Dan 2Yu, Xiao 2Wu, Jian 2Wang, Yan 2Wang, Liqiang 3Wu, Linlin 2Huang, Jianhan2
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作者信息
1. Chinese Acad Sci
2. Cent South Univ
3. Zhengzhou Univ
折叠
Abstract
Electrochemical CO2 reduction reaction (eCO(2)RR) to syngas (CO + H-2) is considered as a great potential and efficient way to abate carbon emissions and mitigate the depletion of fossil resources. Herein, a series of Pd-loaded SnO2 nanosheets catalysts (Pd-SnO2 NSs) are developed by photodeposition of Pd on the surface of SnO2 nanosheets. Due to the formation of the active Pd-SnO2 interface, the as-prepared Pd-SnO2 catalysts exhibit a suppressed eCO(2)RR to HCOOH pathway, thus realizing the faradaic efficiency of syngas close to 100%. The obtained optimal 4.3Pd-SnO2 catalyst exhibits high CO selectivity (78% FECO) and wide H-2/CO ratio ranged from 4.2 to 0.28. Notably, the H-2/CO ratio can be controlled easily by adjusting the applied potential. Moreover, the H-2/CO ratio can maintain for more than 30 h. This work unfolds a promising candidate for earth-abundant Sn-based electrocatalysts for eCO(2)RR to syngas.
Key words
Pd-SnO2 interface/Syngas/Controllable H-2/CO ratio/Electrochemical CO2 reduction/CARBON-DIOXIDE ELECTROREDUCTION/ELECTROCHEMICAL REDUCTION/CATALYSTS/METHANATION/EFFICIENT
NSTL
Elsevier