氮掺杂提高了铜的CO利用率和H2O活化，从而改善了CO2还原为C2+产物

IF 10.7 1区工程技术 Q1 CHEMISTRY, PHYSICAL

Green Energy & Environment Pub Date : 2023-09-01 DOI:10.1016/j.gee.2023.09.002

Yisen Yang, Zhonghao Tan, Jianling Zhang, Jie Yang, Renjie Zhang, Sha Wang, Yi Song, Zhuizhui Su

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引用次数: 0

摘要

改进二氧化碳(CO2)电催化转化为多碳(C2+)产物具有重要意义。本文研制了一种氮掺杂Cu催化剂，该催化剂在流电池体系中C2+法拉第效率最高可达72.7%，分电流密度可达0.62 a cm-2。原位拉曼光谱表明，n掺杂Cu催化剂对*CO的吸附增强，从而促进了后续C-C耦合步骤中*CO的利用。同时，在Cu催化剂上掺杂N可以很好地增强水活化。由于协同作用，n - Cu催化剂对C2+产物的选择性和活性大大提高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Nitrogen-doping boosts *CO utilization and H2O activation on copper for improving CO2 reduction to C2+ products

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Nitrogen-doping boosts *CO utilization and H2O activation on copper for improving CO2 reduction to C2+ products

To improve the electrocatalytic transformation of carbon dioxide (CO2) to multi-carbon (C2+) products is of great importance. Here we developed a nitrogen-doped Cu catalyst, by which the maximum C2+ Faradaic efficiency can reach 72.7% in flow-cell system, with the partial current density reaching 0.62 A cm-2. The in situ Raman spectra demonstrate that the *CO adsorption can be strengthened on such a N-doped Cu catalyst, thus promoting the *CO utilization in the subsequent C-C coupling step. Simultaneously, the water activation can be well enhanced by N doping on Cu catalyst. Owing to the synergystic effects, the selectivity and activity for C2+ products over the N-deoped Cu catalyst are much improved.

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来源期刊

Green Energy & Environment Energy-Renewable Energy, Sustainability and the Environment

CiteScore

16.80

自引率

3.80%

发文量

332

审稿时长

12 days

期刊介绍： Green Energy & Environment (GEE) is an internationally recognized journal that undergoes a rigorous peer-review process. It focuses on interdisciplinary research related to green energy and the environment, covering a wide range of topics including biofuel and bioenergy, energy storage and networks, catalysis for sustainable processes, and materials for energy and the environment. GEE has a broad scope and encourages the submission of original and innovative research in both fundamental and engineering fields. Additionally, GEE serves as a platform for discussions, summaries, reviews, and previews of the impact of green energy on the eco-environment.