Polyethylenimine-enhanced electrocatalytic reduction of CO₂ to formate at nitrogen-doped carbon nanomaterials.
Polyethylenimine-enhanced electrocatalytic reduction of CO₂ to formate at nitrogen-doped carbon nanomaterials.
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DOI：
10.1021/ja5031529
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发表时间：
2014-05
影响因子：
15
通讯作者：
S. Zhang;P. Kang;Stephen M. Ubnoske;M. K. Brennaman;Na Song;R. House;J. Glass;T. Meyer
中科院分区：
文献类型：
--
作者：
S. Zhang;P. Kang;Stephen M. Ubnoske;M. K. Brennaman;Na Song;R. House;J. Glass;T. Meyer
氮掺杂碳纳米管是一种选择性和稳定的电催化剂，用于在水介质中将CO2还原为甲酸盐，而无需使用金属催化剂。聚乙烯亚胺（PEI）通过显著降低催化过电位并增加电流密度和效率而起到助催化剂的作用。共催化似乎有助于稳定单一还原的中间体CO2（·-）并在PEI覆盖层中浓缩CO2。
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(•-) and concentrating CO2 in the PEI overlayer.