Wang, H., Hao, Y., Sun, Y., Pan, J., Hu, F., Kai, D., &amp; Peng, S. (2022). Size Control of Zn, N-doped Carbon Supported Copper Nanoparticles for Effective and Selective CO2 Electroreduction. Catalysis Letters. https://doi.org/10.1007/s10562-022-04125-w
Metal-support interaction has been used for selectivity control towards electro-chemical CO2 reduction reaction (CO2RR). However, little progress has been made in adjusting the size of metal nanoparticles in supporting material and its effect on CO2RR. Herein, we prepared Cu metal nanoparticle catalysts ranging from a few nanometers to tens in crystallite size encapsulated in Zn, N-doped carbon supports and systematically study the size effect of the supported Cu metal catalysts on the reactivity of CO2RR. The catalyst containing 15.7-nm Cu crystallites has a higher Faradaic efficiency (nearly 80%) at − 0.7 V vs. RHE for CO, higher than 12.2-nm and 8.9-nm Cu catalysts. The result shows the dependence of CO2RR performance on Cu metal size, originating from the interaction between metal nanoparticles and their supporting matrix. This work may shed light on the promise of in situ construction method for supported metal catalyst and the investigation of metal-support interaction towards stable and selective electrochemical CO2 reduction.
This research / project is supported by the ASTAR - Career Development Award
Grant Reference no. : CDA202D800033
This work was supported by the National Natural Science Foundation of China (22101132), the Natural Science Foundation of Jiangsu Province (BK20210311), China Postdoctoral Science Foundation (2021M691561, 2021T140319) Jiangsu Planned Projects for Postdoctoral Research Fund (2021K547C), CAS Key Laboratory of Nano-Bio Interface (21NBI02), the Fundamental Research Funds for the Central Universities (NS2021037), and the Graduate Innovation Foundation of Nanjing University of Aeronautics and Astronautics (XCXJH20210606).