Polyethylenimine-Enhanced Electrocatalytic Reduction of CO2 to Formate at Nitrogen-Doped Carbon Nanomaterials

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• 作者：Sheng Zhang ; Peng Kang ; Stephen Ubnoske ; M. Kyle Brennaman ; Na Song ; Ralph L. House ; Jeffrey T. Glass ; Thomas J. Meyer
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：June 4, 2014
• 年：2014
• 卷：136
• 期：22
• 页码：7845-7848
• 全文大小：276K
• 年卷期：v.136,no.22(June 4, 2014)
• ISSN：1520-5126

文摘

Nitrogen-doped carbon nanotubes are selective and robust electrocatalysts for CO₂ reduction to formate in aqueous media without the use of a metal catalyst. Polyethylenimine (PEI) functions as a co-catalyst by significantly reducing catalytic overpotential and increasing current density and efficiency. The co-catalysis appears to help in stabilizing the singly reduced intermediate CO₂^{鈥⑩€?/b>} and concentrating CO₂ in the PEI overlayer.