Ag-decorated copper microsphere for electrochemical reduction of CO2 into methane

Authors

Rabin Dahal, Department of Chemistry, College of Science and Technology, North Carolina Agricultural and Technical State University

Files

Description

We synthesized the copper microsphere decorated with silver nanoparticles using a hydrothermal process followed by photoreduction of Ag ions into Ag nanoparticles. Sub-100 nm Ag nanoparticles anchored on the surface of Cu microspheres improve the electrochemical performance and selectivity of the CO2 reduction into CH4. By enhancing the conductivity and active site of the catalyst and lowering the charge transfer resistance, Ag nanoparticles on Cu accelerate the rate of CO2 reduction. The faradaic efficiency of methane in a copper microsphere coated with silver nanoparticles was 70.94%, about twice as high as that of a copper microsphere (44%). Higher catalytic performance, stability, and faradaic efficiency of silver decorated copper microspheres were noted in the electrochemical reduction of CO2.

Publication Date

4-1-2025

Keywords

Electrochemical CO2 reduction, Hydrothermal synthesis, Faradaic efficiency

Recommended Citation

Dahal, Rabin, "Ag-decorated copper microsphere for electrochemical reduction of CO2 into methane" (2025). 2025 Graduate Student Research Symposium. 111.
https://digital.library.ncat.edu/gradresearchsymposium25/111