电沉积制备铜基催化剂及其对CO2电还原的催化性能

doi:10.3969/j.issn.1000-5641.2023.01.013

华东师范大学学报（自然科学版） ›› 2023, Vol. 2023 ›› Issue (1): 129-139.doi: 10.3969/j.issn.1000-5641.2023.01.013

电沉积制备铜基催化剂及其对CO₂电还原的催化性能

楚萌恩^1,²(), 陈春俊³, 吴海虹^1,^2,*(), 何鸣元^1,², 韩布兴^1,^2,³

1. 华东师范大学化学与分子工程学院上海市绿色化学和化工过程绿色化重点实验室, 上海　200062
2. 崇明生态研究院, 上海　202162
3. 中国科学院化学研究所胶体、界面与化学热力学重点实验室, 北京　100190

收稿日期:2022-07-15 接受日期:2022-07-15 出版日期:2023-01-25 发布日期:2023-01-07
通讯作者: 吴海虹 E-mail:mengcme@163.com;hhwu@chem.ecnu.edu.cn
作者简介:楚萌恩, 女, 博士研究生, 研究方向为电催化还原二氧化碳. E-mail: mengcme@163.com
基金资助:
国家重点研发项目(2017YFA0403102); 华东师范大学“幸福之花”先导研究基金(2020ST2203)

Electrodeposition performance of a copper-based catalyst for the electroreduction of CO₂

Meng’en CHU^1,²(), Chunjun CHEN³, Haihong WU^1,^2,*(), Mingyuan HE^1,², Buxing HAN^1,^2,³

1. Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai　200062, China
2. Institute of Eco-Chongming, Shanghai　202162, China
3. CAS Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing　100190, China

Received:2022-07-15 Accepted:2022-07-15 Online:2023-01-25 Published:2023-01-07
Contact: Haihong WU E-mail:mengcme@163.com;hhwu@chem.ecnu.edu.cn

摘要/Abstract

摘要：

为了提高铜基催化剂电还原CO₂的催化性能, 以氮三乙酸(nitrilotriacetic acid, NTA)为添加剂, 通过电沉积法制备了具有三维结构的铜基催化剂, 该催化剂具有优异的电还原CO₂制备多碳(C2+)产物的选择性和活性. 在 –1.26 V vs. RHE (reversible hydrogen electrode)时, 乙烯(C₂H₄)和C2+ 产物的法拉第效率(faradaic efficiency, FE)分别能达到44.0%和61.6%, 此时总电流密度(current density)为12.3 mA·cm^–2. 此外, 在NTA的作用下, 运用电沉积法制备的Pd和Zn基催化剂具有良好的电还原CO₂为CO的性能, 表明NTA作为添加剂在电沉积法制备金属催化剂方面具有一定的普适性.

关键词: 电催化, 二氧化碳, 铜基催化剂, 电沉积

Abstract:

To improve the catalytic performance of copper-based catalysts in the electroreduction of CO₂, nitrotriacetic acid (NTA) was used as an additive to prepare copper-based catalysts having a three-dimensional structure by applying electrodeposition. The prepared catalysts exhibited excellent selectivity and activity for the electroreduction of CO₂ to multi-carbon (C2+) products. At –1.26 V vs. RHE, the faradaic efficiency of C₂H₄ and C2+ products over the Cu-0.5/CP electrode reached 44.0% and 61.6%, respectively, and the total current density reached 12.3 mA·cm^–2. In addition, Pd- and Zn-based catalysts were prepared by employing electrodeposition; the results showed that their selectivity for CO was significantly improved, proving that NTA has a certain universality in the preparation of electrocatalysts by using electrodeposition.

Key words: electroreduction, carbon dioxide, copper-based catalysts, ethylene

中图分类号:

O646

楚萌恩, 陈春俊, 吴海虹, 何鸣元, 韩布兴. 电沉积制备铜基催化剂及其对CO₂电还原的催化性能[J]. 华东师范大学学报（自然科学版）, 2023, 2023(1): 129-139.

Meng’en CHU, Chunjun CHEN, Haihong WU, Mingyuan HE, Buxing HAN. Electrodeposition performance of a copper-based catalyst for the electroreduction of CO₂[J]. Journal of East China Normal University(Natural Science), 2023, 2023(1): 129-139.

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电沉积制备铜基催化剂及其对CO₂电还原的催化性能

Electrodeposition performance of a copper-based catalyst for the electroreduction of CO₂

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