(N, B) Dual Heteroatom-Doped Hierarchical Porous Carbon Framework for Efficient Electroreduction of Carbon Dioxide,ACS Sustainable Chemistry & Engineering

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(N, B) Dual Heteroatom-Doped Hierarchical Porous Carbon Framework for Efficient Electroreduction of Carbon Dioxide
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-03-27 , DOI: 10.1021/acssuschemeng.0c00739
Chen Jia ₁ , Wenhao Ren ₁ , Xianjue Chen ₁ , Wanfeng Yang ₁ , Chuan Zhao ₁

Affiliation

A versatile salt–sugar method is developed to synthesize a (N, B) dual heteroatom-doped three-dimensional (3D) hierarchical porous carbon network. Through freeze drying and a two-stage heating process, the N and B atoms can be atomically dispersed into the carbon structure with high doping levels (N, 10.2 at. %; B, 8.86 at. %). The as-prepared metal-free catalyst exhibit a high CO₂-to-CO Faradaic efficiency of 83% at a low overpotential of 290 mV and an excellent stability for >20 h. The excellent performance of the catalyst is attributed to the synergistic catalytic effect from the N and B atom codoping and the 3D hierarchical porous structure. This work opens up enormous opportunities for multiheteroatom-doped porous carbon as catalysts for high-efficiency CO₂ reduction and a range of electrochemical applications.

中文翻译：

（N，B）高效电还原二氧化碳的双杂原子掺杂分层多孔碳骨架

开发了一种通用的盐糖方法来合成（N，B）双杂原子掺杂的三维（3D）分层多孔碳网络。通过冷冻干燥和两阶段加热过程，可以将N和B原子以高掺杂水平（N，10.2 at。％； B，8.86 at。％）原子分散到碳结构中。所制备的无金属催化剂在290 mV的低过电势下表现出83％的高CO ₂转化为CO的法拉第效率，以及对> 20 h的优异稳定性。催化剂的优异性能归因于N和B原子共掺杂和3D分层多孔结构的协同催化作用。这项工作为掺杂多杂原子的多孔碳作为高效CO ₂催化剂提供了巨大的机会。还原和一系列电化学应用。

更新日期：2020-04-23

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