催化学报 ›› 2022, Vol. 43 ›› Issue (6): 1417-1432.DOI: 10.1016/S1872-2067(21)63980-3

• 综述 • 上一篇    下一篇

金属-有机配位结构与界面调控电催化二氧化碳还原

吕奉磊a,b,c,, 花伟a,b,c,, 邬慧蓉a,b,c, 孙浩a,b,c, 邓昭a,b,c, 彭扬a,b,c,*()   

  1. a苏州大学能源学院, 苏州能源与材料创新研究所, 江苏苏州215006
    b苏州大学江苏省先进碳材料与可穿戴能源技术重点实验室, 江苏苏州215006
    c苏州市低碳技术与产业化重点实验室, 江苏苏州215006
  • 收稿日期:2021-09-16 接受日期:2021-09-16 出版日期:2022-06-18 发布日期:2022-04-14
  • 通讯作者: 彭扬
  • 作者简介:第一联系人:

    共同第一作者

  • 基金资助:
    国家重点研发计划(2020YFB1505703);国家自然科学基金(22072101);国家自然科学基金(22075193);江苏省自然科学基金(BK20211306);苏州市科技局(SYG201934);江苏省六大人才高峰(TD-XCL-006);江苏高校优势学科建设工程资助项目

Structural and interfacial engineering of well-defined metal-organic ensembles for electrocatalytic carbon dioxide reduction

Fenglei Lyua,b,c,, Wei Huaa,b,c,, Huirong Wua,b,c, Hao Suna,b,c, Zhao Denga,b,c, Yang Penga,b,c,*()   

  1. aSoochow Institute for Energy and Material Innovations, College of Energy, Soochow University, Suzhou 215006, Jiangsu, China
    bKey Laboratory for Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, Jiangsu, China
    cSoochow Municipal Laboratory for Low Carbon Technologies and Industries, Suzhou 215006, Jiangsu, China
  • Received:2021-09-16 Accepted:2021-09-16 Online:2022-06-18 Published:2022-04-14
  • Contact: Yang Peng
  • About author:First author contact:

    Contributed equally to this work.

  • Supported by:
    National Key R&D Program of China(2020YFB1505703);National Natural Science Foundation of China(22072101);National Natural Science Foundation of China(22075193);Natural Science Foundation of Jiangsu Province(BK20211306);Key Technology Initiative of Suzhou Municipal Science and Technology Bureau(SYG201934);Six Talent Peaks Project in Jiangsu Province(TD-XCL-006);Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions

摘要:

电催化二氧化碳还原(CO2RR)利用可再生能源(如太阳能和风能)将CO2转化为燃料和高附加值化学品, 因而被广泛认为是“一石二鸟”的绿色技术来解决能源与环境问题. 然而, CO2RR的大规模应用仍严重受限于缺乏高效稳定的CO2RR催化剂. 非均相分子催化剂和金属-有机框架因具有明确的结构且金属中心和配体可以调节与修饰, 在CO2RR的基础研究和实际应用中都展现出巨大潜力.
本文综述了这些具有明确结构的金属-有机配位化合物的结构与界面调控应用于CO2RR领域的工作. 介绍了CO2RR的基础电化学、催化剂的性能评价指标(包括过电位、法拉第效率、塔菲尔斜率、转化频率和电化学能量效率)和三种常用电解池(H型电解池、流动电解池和膜电极组件)的优缺点. 重点总结近期非均相分子催化剂中金属中心、配体效应和分子-载体相互作用的调控及金属-有机框架的结构工程和原位重构等方面的重点工作. 迄今, 具有不同金属中心(如Mn、Fe、Co、Ni、Cu和Zn等)和配体(包括酞菁、卟啉和金属中心轴向配位等)的非均相分子催化剂和金属-有机框架被报道用于高效CO2RR. 调节催化剂-载体相互作用, 抑制催化剂团聚并增强其导电性, 可有效地提高分子催化剂的活性和稳定性. 制备导电金属-有机框架、在金属-有机框架中引入活性位点或促进剂并控制金属-有机框架的原位重构, 为构建高效CO2RR催化剂带来更多机会.
金属-有机配位化合物的结构和界面工程是发展高效CO2RR催化剂的重要方向. 然而, 金属-有机配位化合物用于CO2RR仍处于初级发展阶段, 充分发挥其潜力任重道远. 根据目前研究面临的问题, 总结和展望该领域未来应关注的方向: (1)定向合成新颖分子催化剂、金属-有机框架和载体及其结构和界面的精准调控; (2)非均相分子催化剂和金属-有机框架在CO2RR的大规模应用; (3)追踪和调控非均相分子催化剂和金属-有机框架的重构; (4)阐明金属-有机配位结构和CO2RR性能的构-效关系. 本文为高效CO2RR催化剂设计与合成提供一定参考.

关键词: 二氧化碳还原, 电催化, 非均相分子催化剂, 金属-有机框架, 原位重构

Abstract:

Electrochemical carbon dioxide reduction (CO2RR) has been generally regarded as green technologies that can convert renewable energy such as sunlight and wind into fuels and valuable chemicals. However, the large-scale implementation of CO2RR is severely hindered by the lack of high-performance CO2RR electrocatalysts. Heterogeneous molecular catalysts and metal-organic framework with well-defined structure and high tunability of the metal centers and ligands show great promise for CO2RR in terms of both fundamental understanding and practical application. Here, structural and interfacial engineering of these well-defined metal-organic ensembles is summarized. This review starts from the fundamental electrochemistry of CO2RR and its evaluation criteria, and then moves to the heterogeneous molecular catalysts and metal-organic framework with emphasis on the engineering of metal centers and ligands, their interaction with supports, as well as in situ reconstruction of metal-organic ensembles. Summary and outlook are present in the end, with the hope to inspire and provoke more genuine thinking on the design and fabrication of efficient CO2RR electrocatalysts.

Key words: Carbon dioxide reduction, Electrocatalysis, Heterogeneous molecular catalyst, Metal-organic frameworks, In situ reconstruction