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Facile synthesis of two-dimensional copper terephthalate for efficient electrocatalytic CO2 reduction to ethylene
Journal of Experimental Nanoscience ( IF 2.6 ) Pub Date : 2021-08-06 , DOI: 10.1080/17458080.2021.1957844
Ying Zhang 1 , Yangmei Li 2 , Qiang Tan 2 , Song Hong 3 , Zhenyu Sun 2
Affiliation  

Abstract

Electrochemical CO2 reduction (ECR) powered by renewable electricity is reckoned to provide an effective strategy to alleviate environmental issues and energy crisis, enabling a potential carbon neutral economy. To boost the ECR to fuels and value-added chemicals, the design of highly active and selective catalysts is important. In this study, we demonstrate facile ultrasonication-facilitated synthesis of two-dimensional copper terephthalate for efficient ECR. High faradaic efficiencies (FEs) of up to 72.9% for hydrocarbons are achieved at a mild overpotential in an H-type cell. In particular, the FE for ethylene (C2H4) formation approaches 50.0% at an applied potential of −1.1 V (vs. the reversible hydrogen electrode), outperforming commercial Cu, Cu2O, CuO, Cu(OH)2 and many recently reported Cu-based materials. The C2H4 partial geometric current density is as high as ∼6.0 mA·cm−2. This work offers a simple avenue to developing advanced electrocatalysts for converting CO2 into high-value hydrocarbons.



中文翻译:

二维对苯二甲酸铜的简便合成用于高效电催化 CO2 还原为乙烯

摘要

由可再生电力驱动的电化学 CO 2还原 (ECR) 被认为是缓解环境问题和能源危机的有效策略,从而实现潜在的碳中和经济。为了提高燃料和高附加值化学品的 ECR,高活性和选择性催化剂的设计很重要。在这项研究中,我们展示了二维对苯二甲酸铜的简便超声促进合成,以实现高效的 ECR。在 H 型电池中,在轻度过电位下可实现高达 72.9% 的碳氢化合物的高法拉第效率 (FE)。特别是,乙烯 (C 2 H 4 ) 形成的 FE在 -1.1 V(相对于可逆氢电极)的施加电位下接近 50.0%,优于商业 Cu、Cu2 O、CuO、Cu(OH) 2和许多最近报道的基于铜的材料。C 2 H 4部分几何电流密度高达~6.0 mA·cm -2。这项工作为开发用于将 CO 2转化为高价值碳氢化合物的先进电催化剂提供了一种简单的途径。

更新日期:2021-08-07
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