纳米复合材料
石墨烯
氧化物
铜
电化学
材料科学
化学工程
二氧化碳电化学还原
催化作用
还原(数学)
二氧化碳
碳纤维
氧化铜
无机化学
纳米技术
化学
电极
一氧化碳
复合材料
有机化学
冶金
复合数
生物化学
数学
物理化学
工程类
几何学
作者
M. Nur Hossain,Jiali Wen,Aicheng Chen
标识
DOI:10.1038/s41598-017-03601-3
摘要
The electrochemical reduction of CO2 to useful chemicals and fuels has garnered a keen and broad interest. Herein, we report a unique nanocomposite consisting of Cu nanoparticles (NPs) and reduced graphene oxide (rGO) supported on a Cu substrate with a high catalytic activity for CO2 reduction. The nanocomposite was optimized in terms of the composition of Cu NPs and rGO as well as the overall amount. A gas chromatograph was employed to analyze the gaseous products, whereas a chemical oxygen demand (COD) method was proposed and utilized to quantify the overall liquid products. The optimized nanocomposite could effectively reduce CO2 to CO, HCOOH and CH4 with a Faradaic efficiency (FE) of 76.6% at -0.4 V (vs. RHE) in a CO2 saturated NaHCO3 solution. The remarkable catalytic activity, high FE, and excellent stability make this Cu-rGO nanocomposite promising for the electrochemical reduction of CO2 to value-added products to address the pressing environmental and energy challenges.
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