同步辐射
表征(材料科学)
X射线吸收光谱法
同步加速器
Atom(片上系统)
材料科学
X射线
催化作用
吸收(声学)
吸收光谱法
化学
纳米技术
光学
物理
计算机科学
生物化学
嵌入式系统
复合材料
作者
Zhongxin Song,Junjie Li,Kieran Doyle Davis,Xifei Li,Jiujun Zhang,Lei Zhang,Xueliang Sun
标识
DOI:10.1002/smtd.202201078
摘要
Abstract Single atom catalysts (SACs) can achieve a maximum atom utilization efficiency of 100%, which provides significantly increased active sites compared with traditional catalysts during catalytic reactions. Synchrotron radiation technology is an important characterization method for identifying single‐atom catalysts. Several types of internal information, such as the coordination number, bond length and electronic structure of metals, can all be analyzed. This review will focus on the introduction of synchrotron radiation techniques and their applications in SACs. First, the fundamentals of synchrotron radiation and the corresponding techniques applied in characterization of SACs will be briefly introduced, such as X‐ray absorption near edge spectroscopy and extended X‐ray absorption fine structure spectroscopy and in situ techniques. The detailed information obtained from synchrotron radiation X‐ray characterization is described through four routes: 1) the local environment of a specific atom; 2) the oxidation state of SACs; 3) electronic structures at different orbitals; and 4) the in situ structure modification during catalytic reaction. In addition, a systematic summary of synchrotron radiation X‐ray characterization on different types of SACs (noble metals and transition metals) will be discussed.
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