A highly selective tin-copper bimetallic electrocatalyst for the electrochemical reduction of aqueous CO2 to formate
| Autor: | Yong Shao, Xin Xiao, Zhenjie Liu, Haiping Pan, Mingkui Wang, Xingxing Jiang, Qinglong Wang, Jiawei Wang, Zhangquan Peng, Man Li, Xikui Wang, Yan Shen |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Process Chemistry and Technology Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Electrochemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Formate 0210 nano-technology Tin Selectivity Bimetallic strip General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 259:118040 |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2019.118040 |
| Popis: | Electrochemical reduction of CO2 is promising for mitigating the excessive CO2 emission. However, the low efficiency and poor selectivity for targeted products block the practical application of most conventional electrocatalysts. Here, we developed an electronic regulation Cu embedded into Sn nanoparticles heterogeneous bimetallic catalyst, with high catalytic activity and selectivity for electrochemical reduction of CO2. The excellent performance of high activity is mainly due to the appearance of abundant Sn-Cu interfaces after Cu embedded into Sn nanoparticles. XPS characterization indicates that the atomic Sn electronic structure of the bimetallic catalyst was significantly regulated by deposited Cu atoms. DFT calculations in combination with In-situ Raman spectroscopy characterization on CO2 reduction process further indicates that the electronic regulation of bimetallic catalyst facilitates the formation of key intermediate HCOO • followed by the generation of formate with high selectivity. The present design provides a method for prepare bimetallic catalyst with high catalytic performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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