Synergistically boosting CO2 electroreduction to ethylene by CeO2-modified CuO nanorods
With the development of social economy and the expansion of human activities,the concentration of CO2 in the atmosphere is increasing day by day,and it brings many environmental pollution problems,hence,developing efficient and sustainable techniques for CO2 conversion is of utmost importance.Based on the electrocatalytic reaction mechanism,a series of CuO/CeO2 nanorods were fabrication for enhancing the electrochemical reduction of carbon dioxide.The optimized CuO/CeO2-2(molCeO2:molCuO=2%)electrocatalyst needed the potential of-0.99V vs.RHE to achieve the current density of 20mA/cm2,and displayed the highest FEC2H4 of 46%at the potential of-1.08V vs.RHE.The decent property is attributed to large surface area,rough surface,and synergistic effect between CuO and CeO2,thereby enhancing reaction activity sites and electron transfer efficiency.The study will provide theoretical guidance for the design and optimization of CuO-based composites for efficient CO2 conversion.
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