单原子催化剂在光催化分解水制氢中的研究现状  

Research Status of Single Atom Catalyst in Hydrogen Production by Photocatalytic Water Splitting

作　　者：冯亚杰 段有雨 邹函君[2] 马江平 周楷[2] 周小元[1,2] Feng Yajie;Duan Youyu;Zou Hanjun;Ma Jiangping;Zhou Kai;Zhou Xiaoyuan(College of Physics,Chongqing University,Chongqing 401331,China;Analtical and Testing Center,Chongqing University,Chongqing 401331,China)

机构地区：[1]重庆大学物理学院,重庆401331 [2]重庆大学分析测试中心,重庆401331

出　　处：《稀有金属》2021年第5期551-568,共18页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(51772035,11674040,51472036);中央高校基本科研业务费专项项目(106112017CDJQJ308821)资助。

摘　　要：光催化分解水制氢技术可以实现太阳能转化为氢能,因此它被认为是一种解决能源和环境问题的有效手段之一。单原子催化剂是催化领域一种新型的催化材料,金属原子级地分散在基底材料上,使其有着最大的原子利用率,其独特的优势引起了人们的广泛关注。在光催化分解水产氢领域,单原子的引入可以一定程度上改变基底材料的内在电子结构以及材料的物理化学性质,为进一步优化材料的光催化分解水产氢的活性提供了思路和方法。在本篇文章中,归纳总结了单原子催化剂合成策略的优缺点以及单原子催化剂在光催化分解水产氢实际应用策略,主要从催化剂的光谱响应范围、电荷转移的动力学以及活性位点的配位环境等方面来讨论单原子的引入对催化剂载体本身的性质改变,也讨论了单原子结构和光催化活性的联系以及可能的催化机制。同时结合实验和文献总结了该领域的发展前景和面临的挑战,提出了一些可能的解决方案。最后希望本篇综述可以为今后单原子催化剂的制备以及在光催化分解水领域的应用提供一些启发,促进光催化分解水领域的发展。The emission of carbon dioxide caused by the depletion of fossil fuel source led to global warming and affected the survival and development of human beings.Photocatalytic water splitting for hydrogen evolution was a potential means of achieving converting the solar energy into hydrogen energy and had obtained promising practical applications in hydrogen powered vehicles,it was considered as an effective method of solving the problems of energy shortage and global warming.Human beings′ability to convert the solar energy into hydrogen energy would influence the industrial development,which were significantly depended on the catalytic activity of catalysts.As for the photocatalytic activity of hydrogen production mainly depended on several aspects:the spectral response range of the catalyst,the number of active sites and the kinetic process of photo-generated carriers.As a type of emerging photocatalyst,singleatom catalysts(SACs),defined as a dispersed metal anchored on the supports,had attracted aroused extensive attention in the field of catalysis over the past few years due to atomically dispersed active sites and the usage of precious metal with a 100%atomic utilization efficiency.Moreover,the unique geometric structure and electronic properties of single-atom centers by metal/support interactions on catalytic could effectively improve the catalytic activity and selectivity of each active site.In the area of the photocatalytic water splitting for hydrogen evolution,SACs could also develop its unique advantages,such as providing ideas and methods for further optimizing the activity of photocatalysis materials for photocatalytic water splitting for hydrogen evolution.In recent years,a great deal of researches about single-atom photocatalysts had been done.Our understanding of SACs had deepened by advanced characterization techniques and theoretical calculations.However,there were still some problems in the development of SACs.For example,surface energy of isolated metal atoms increased dramatically with the met

关 键 词：单原子 光催化 分解水产氢 配位环境 

分 类 号：TB34[一般工业技术—材料科学与工程]