催化学报 ›› 2023, Vol. 52: 79-98.DOI: 10.1016/S1872-2067(23)64498-5

• 综述 • 上一篇    下一篇

单原子催化剂在光催化和电催化合成过氧化氢中的研究进展

唐小龙a,b, 李锋a,b, 李方a, 江燕斌a,b,*(), 余长林a,*()   

  1. a广东石油化工大学化学工程学院, 广东茂名525000
    b华南理工大学化学与化工学院, 广东广州510000
  • 收稿日期:2023-06-27 接受日期:2023-08-25 出版日期:2023-09-18 发布日期:2023-09-25
  • 通讯作者: *电子信箱: cebjiang@scut.edu.cn (江燕斌),yuchanglinjx@163.com (余长林).
  • 基金资助:
    国家自然科学基金(22272034);国家自然科学基金(22102034);广东省基础与应用基础研究基金(2022A1515011900);广东省基础与应用基础研究基金(2023A1515012948);广东省高校珠江学者资助计划(2019);广东省高校环境与能源绿色催化创新团队(2022KCXTD019);茂名市绿色化工研究院扬帆应用创新项目(MMGCIRI-2022YFJH-Y-002);茂名市科技项目(2020KJZX035)

Single-atom catalysts for the photocatalytic and electrocatalytic synthesis of hydrogen peroxide

Xiaolong Tanga,b, Feng Lia,b, Fang Lia, Yanbin Jianga,b,*(), Changlin Yua,*()   

  1. aSchool of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China
    bSchool of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510000, Guangdong, China
  • Received:2023-06-27 Accepted:2023-08-25 Online:2023-09-18 Published:2023-09-25
  • Contact: *E-mail: cebjiang@scut.edu.cn (Y. Jiang),yuchanglinjx@163.com (C. Yu).
  • About author:Yanbin Jiang (School of Chemistry and Chemical Engineering, South China University of Technology) was elected as a member of 2th supercritical fluid technology committee, CIESC (2023‒2028). He received his B.A. degree from Beijing University of Chemical Technology (China) in 1992, and Ph.D. degree from South China University of Technology in 2000. He carried out postdoctoral research at Department of Chemical Engineering in Kyoto University (Japan) from 2003 to 2005. Since July 1995, he has been working in School of Chemistry and Chemical Engineering, South China University of Technology. He won the Science and Technology Award of Guangdong Province five times as a major completer (2000‒2015). His research interests mainly focus on chemical product engineering, especially separation engineering, process and particle technology. He has published more than 160 peer-reviewed papers.
    Changlin Yu (School of Chemical Engineering, Guangdong University of Petrochemical Technology Maoming) received his B.S. in 2004 and Ph.D degree in 2007 from Hunan University Science and Technology and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, respectively. From 2007 to 2008, he did postdoctoral research at The Chinese University of Hongkong. At the end of 2008, he joined the Department School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou. From 2012 to 2013, he worked as visiting scholar at Carnegie Mellon University. In 2019, He joined the Guangdong University of Petrochemical Technology and received the Guangdong Pearl River Scholar in 2019. His research interests currently focus on new materials and energy photocatalysis, electrocatalysis with emphasis on design of new catalysts and control of morphology, microstructure and reaction mechanism for hydrogen production, environmental pollutants degradation, etc. He is author or co-author of more than 220 peer-reviewed papers with over 10000 citations with an H-index of 52. He was invited as a member of the editorial board of Chin. J. Catal. Since 2021.
  • Supported by:
    National Natural Science Foundation of China(22272034);National Natural Science Foundation of China(22102034);Guangdong Basic and Applied Basic Research Foundation(2022A1515011900);Guangdong Basic and Applied Basic Research Foundation(2023A1515012948);Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme(2019);Environment and Energy Green Catalysis Innovation Team of Colleges and Universities of Guangdong Province(2022KCXTD019);Yangfan Applied Innovation Project of Maoming Green Chemical Industry Research Institute(MMGCIRI-2022YFJH-Y-002);Science and Technology Project of Maoming(2020KJZX035)

摘要:

2011年张涛院士等首次提出单原子催化剂(SACs)的概念, 随后SACs迅速成为催化领域的一个研究热点. 由于催化活性位点的原子级分散和载体的固定作用, SACs兼具了均相催化剂(单活性中心和高选择性)和多相催化剂(结构稳定和易回收重复使用)的优点. 此外, SACs上原子级分散的金属活性位点更容易通过鲍林模式来吸附氧分子, 有效提高了双电子氧还原反应的选择性, 并且能够在相同的金属负载量下提供更多的活性位点, 降低了应用成本. 这些特点使得SACs在光催化和电催化产过氧化氢领域展现出较大优势, 但同时SACs过高的表面自由能也使得其金属负载量较低且稳定性差, 这些问题还需通过进一步研究进行改善.

本综述简要介绍了光催化和电催化产过氧化氢的基本原理, 详述了SACs在该领域中的独特优势. 概述了密度泛函理论(DFT)计算在SACs产过氧化氢研究中发挥的重要作用, DFT计算不仅能够高效方便地筛选出具有应用潜力的金属单原子, 从而有效减少实验工作量, 而且能揭示催化过程中的潜在活性位点, 并结合原位表征为SACs产过氧化氢催化机理解释提供有力证据, 这对合成高性能的SACs具有重要的指导意义. 总结了近期基于贵金属(Pt, Pd和Rh等)和非贵金属(Co, Ni和Sb等)的SACs在光催化和电催化产过氧化氢中的重点工作, 其中包括SACs的理论计算结果和催化反应途径. SACs产过氧化氢的催化活性与单原子金属中心的局部环境密切相关, 中心金属原子种类、配位原子种类和数目以及其周围的环境原子都是影响SACs活性的重要因素, 如何找出这些因素的最优组合是合成高性能SACs的关键.

本文还展望了SACs在光催化和电催化产过氧化氢过程中面临的一些挑战, 虽然SACs具有较高的原子利用效率, 但其表面高自由能会导致金属位点在合成过程和反应过程中容易聚集成簇甚至纳米颗粒, 导致SACs的过氧化氢产率仍停留在毫摩尔水平, 活性和稳定性远远达不到工业要求, 所以未来应当采用更多的原位表征手段来深入地了解SACs在合成过程和催化反应过程中的结构变化规律, 以便更好地指导开发易操作和低成本的合成路线来制备具有理想金属负载量和高稳定性的SACs. 此外, 未来可以考虑将负载单原子与缺陷工程、元素掺杂和异质结工程等其它改性策略相结合, 利用它们的协同作用进一步提升SACs产过氧化氢的性能.

关键词: 单原子催化剂, 光催化, 电催化, 过氧化氢, 性能提升

Abstract:

Hydrogen peroxide (H2O2) is widely used as an environmentally friendly oxidant and plays an important role in a range of applications, including chemical synthesis, wastewater treatment, medical disinfection, and papermaking. Compared to the conventional anthraquinone process for the preparation of H2O2, the photocatalytic and electrocatalytic production of H2O2 has the advantages of simple and controllable operating conditions and non-polluting reaction products, which is one of the most essential ideal means for H2O2 production. Among them, single-atom catalysts (SACs) with maximal atom utilization and special unsaturated coordination environments have attracted considerable attention because of their excellent catalytic performance in the photocatalytic and electrocatalytic production of H2O2. Subsequently, recent progress in H2O2 production based on photocatalytic and electrocatalytic activity is presented in this review. First, the working mechanisms and advantages of SACs for the photocatalytic and electrocatalytic production of H2O2 were presented. Second, we combined density functional theory calculations and advanced characterization techniques to introduce SAC systems for H2O2 production. Finally, the future directions of SACs for photocatalytic and electrocatalytic H2O2 production are discussed.

Key words: Single-atom catalyst, Photocatalysis, Electrocatalysis, Hydrogen peroxide, Performance enhancement