催化学报 ›› 2024, Vol. 62: 53-107.DOI: 10.1016/S1872-2067(24)60053-7

• 综述 • 上一篇    下一篇

光电催化析氧和CO2还原反应催化剂的研究进展

朱鸿睿, 徐慧民, 黄陈金, 张志杰, 詹麒尼, 帅婷玉, 李高仁*()   

  1. 四川大学材料科学与工程学院, 四川成都 610065
  • 收稿日期:2024-03-08 接受日期:2024-05-06 出版日期:2024-07-18 发布日期:2024-07-10
  • 通讯作者: 电子信箱: ligaoren@scu.edu.cn (李高仁).
  • 基金资助:
    国家自然科学基金(52373215);四川科技项目(2023NSFSC0086);中央高校基本研究经费(YJ2021156)

Recent advances of the catalysts for photoelectrocatalytic oxygen evolution and CO2 reduction reactions

Hong-Rui Zhu, Hui-Min Xu, Chen-Jin Huang, Zhi-Jie Zhang, Qi-Ni Zhan, Ting-Yu Shuai, Gao-Ren Li*()   

  1. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China
  • Received:2024-03-08 Accepted:2024-05-06 Online:2024-07-18 Published:2024-07-10
  • Contact: E-mail: ligaoren@scu.edu.cn (G.-R. Li).
  • About author:Gao-Ren Li (College of Materials Science and Engineering, Sichuan University). Prof. Gao-Ren Li received his B.A. degree from East China University of Technology (China) in 2000, and Ph.D. degree from Sun Yat-sen University (China) in 2005. From September 2005 to September 2021, he worked in School of Chemistry, Sun Yat-sen University. Since October 2021, he has been working in College of Materials Science and Engineering, Sichuan University. His current research interests mainly focus on electrocatalysis, especially water splitting and electrochemical conversion of CO2.
  • Supported by:
    National Natural Science Foundation of China(52373215);Sichuan Science and Technology Program(2023NSFSC0086);Fundamental Research Funds for the Central Universities(YJ2021156)

摘要:

随着日益增加的化石能源消耗和环境污染, 新能源和环境友好型技术的应用对工业发展发挥着重要作用. 利用太阳能及电能进行各种催化反应的光电催化(PEC)是一种有应用前景的技术, 与传统催化技术相比, 具有环保节能、效率高的优势. 析氧反应(OER)和CO2还原反应(CO2RR)是两种具有能源及环境应用潜力的催化反应. PEC OER对基于水氧化和其他相关氧化反应的可再生能源技术具有重要作用. PEC CO2RR可以将CO2转化为高附加值化学品, 实现CO2的合理利用. 上述两种技术均具有较大的研究价值和应用前景.

本综述首先阐述了电催化和光催化技术的优缺点. 由于工业上使用电催化技术会消耗煤和石油等化石能源, 有污染环境的风险, 且长期的用电成本会影响最终的盈利; 而使用光催化技术又面临着反应效率不理想、稳定性差和可见光吸收率低等缺点. 一方面, PEC技术可以解决光催化中光生电子-空穴对复合速度快、反应时间长的缺点; 另一方面, PEC技术可以降低电催化过程中在高电流密度下反应所需的过电位, 在节省电能的同时提高反应效率. 此外, 系统地介绍了光电催化产氧和CO2RR的机理和参数、催化剂类型、评价标准以及近年来的研究进展. 对于反应条件, 光电催化和电催化所使用的基础仪器基本相同, 而光电催化是在电催化的基础之上施加外部光源, 利用光能进一步提高反应效率和稳定性. 光电催化和电催化的反应机理也基本一致, 不同的是光电催化的评价标准与电催化有所不同. 在光照作用下, 除了关注特定电压下的电流密度、选择性和稳定性外, 研究者们更关注应用偏压光子电流转换效率(ABPE)和入射光子对电流的效率(IPCE)的影响. 同时, 介绍了用于PEC OER和CO2RR催化剂的类别、优势、合成方法、设计原则和改性策略. 就目前研究而言, 光电催化性能优异的催化剂一般都具有导电性良好、光吸收效率高和载流子分离速率快等特点. 随着对光电催化技术研究地深入, 通过掺杂、制造缺陷、设计异质结、负载单/双原子和改变反应微环境等方法有效地提升了催化效率和稳定性. 在上述研究基础上, 还扩展性地阐述光热催化、光酶催化等近几年的热点技术, 这些技术均具有反应条件温和、过程简单和效率高等特点, 在未来具有较大的研究价值. 最后, 展望了PEC技术的未来发展趋势和前景, 重点关注了它在工业上的应用前景和价值.

在未来, PEC技术将朝着智能化、创新和环保的方向发展. 通过先进的理论技术(如理论计算、机器学习、分子动力学模拟等)和原位表征探索反应机理, 实现低成本、绿色和智能化的技术以迎接未来实现大规模工业化的挑战, 从而在盈利和环保两者之间实现“双赢”. 希望本文能帮助读者更快及更全面地了解PEC技术的基本原理、常用催化剂、改性策略、拓展技术、应用前景和发展趋势, 从而为读者提供可借鉴的研究思路.

关键词: 光电催化, 催化剂设计, 催化剂制备, 析氧反应, 二氧化碳还原反应

Abstract:

Increasing global energy consumption and environmental pollution make the use of new energy sources and environmentally friendly technologies essential to meet the diverse needs of industries. Photoelectrocatalysis is a promising method of utilising solar and electrical energy for various catalytic reactions with significant environmental and energy saving benefits. And photoelectrocatalytic (PEC) oxygen evolution reaction (OER) and CO2 reduction reaction (CO2RR) are two catalytic reactions with great potential for energy and environmental applications. PEC OER is critical for renewable energy technologies for water oxidation and other related oxidation reactions. PEC CO2RR converts carbon dioxide into high-value products via a catalyst, enabling the rational use of carbon dioxide and the reduction of greenhouse gas emissions. Both technologies are efficient, environmentally friendly, and sustainable. However, further research and optimisation are needed to promote the industrial application of both technologies for energy conversion and environmental protection. This paper reviews the research progress of PEC CO2RR and OER catalysts in recent years, including detailed descriptions of catalyst types, reaction mechanisms and performance tests. Finally, the paper considers the future trends and prospects of PEC technology, providing new insights into the technology and research directions for PEC OER and CO2RR catalysts.

Key words: Photoelectrocatalysis, Catalyst design, Catalyst fabrication, Oxygen evolution reaction, CO2 reduction reaction