长链烷氧基修饰酞菁镍电催化还原CO<sub>2</sub>的研究

摘要开发和设计低成本、高效、低过电位的电催化CO₂还原(ECR)催化剂对于缓解温室效应、将CO₂变废为宝至关重要。利用不同长链烷氧基对酞菁镍分子进行修饰,并将其固载于多壁碳纳米管(MWCNTs),成功制备了酞菁镍基分子分散催化剂(NiPc/CNT)。利用红外光谱(IR)、拉曼光谱(Raman)、紫外-可见吸收光谱(UV-vis)、X射线光电子能谱(XPS)、扫描电镜(SEM)和透射电镜(TEM)等手段对其结构进行表征,证实了NiPc/CNT的成功合成。实验结果表明,制备的己氧基酞菁镍基催化剂(NiPc-6/CNT)在-0.70~-0.95 V范围内展现出优异的ECR催化活性和选择性,CO的法拉第效率(FE_CO)接近于100%,从而为高效ECR催化剂的分子设计提供了新的思路。

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	张心爱
	张博
	刘雪玲
	高凌
	李劲超
	陈良
	张亚萍

关键词：电催化 CO₂还原酞菁镍分子分散催化剂

Abstract： Developing and designing inexpensive, efficient, and low overpotential electrocatalytic CO₂ reduction (ECR) catalysts is crucial for alleviating greenhouse effect and transforming carbon dioxide into treasure. In this study, the nickel phthalocyanine based molecular dispersion catalysts (NiPc/CNT) were fabricated through modification by different long-chain alkoxy groups and immobilized onto multi-walled carbon nanotubes (MWCNTs). The successful synthesis of NiPc/CNT was confirmed through comprehensive structural characterization, including infrared spectroscopy (IR), Raman spectroscopy (Raman), UV-Vis spectroscopy (UV-Vis), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Experimental results demonstrate that the NiPc-6/CNT exhibits high catalytic activity and excellent selectivity for ECR within the potential range of -0.70 V to -0.95 V, and the Faraday efficiency for CO production (FE_CO) approaches 100%. This study provides a novel molecular design strategy for the development of efficient electrochemical catalysts for ECR.

Keywords： electrocatalysis CO₂ reduction nickel phthalocyanine molecular dispersion catalyst

Received 2023-10-10;

Fund:国家自然科学基金(U20A20125)。

Corresponding Authors: 陈良,博士,E-mail:chenliang1093@163.com;张亚萍,教授,E-mail:zhangyaping@swust.edu.cn。 Email: chenliang1093@163.com;zhangyaping@swust.edu.cn

About author: 张心爱(1998—),女,硕士研究生,现从事CO₂还原电催化剂方面的研究。

引用本文:

张心爱, 张博, 刘雪玲, 高凌, 李劲超, 陈良, 张亚萍.长链烷氧基修饰酞菁镍电催化还原CO₂的研究[J]. 化学工业与工程, 2024,41(6): 50-60

ZHANG Xinai, ZHANG Bo, LIU Xueling, GAO Ling, LI Jinchao, CHEN Liang, ZHANG Yaping.Study on electrocatalytic reduction of CO₂ by long chain alkoxy modified nickel phthalocyanine[J]. Chemcial Industry and Engineering, 2024,41(6): 50-60

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