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Platinum single-atom catalysts: a comparative review towards effective characterization

机译：单原子催化剂铂:比较回顾对有效的表征

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摘要

Single-atom catalysis is a new frontier in the heterogeneous catalysis field due to its high activity and selectivity for various catalytic reactions. However, decades ago, single-atom catalysts could not be clearly visualized and characterized due to limitations associated with instrument resolution. In recent years, with the rapid development of characterization techniques, high-resolution scanning tunneling microscopy (STM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), extended X-ray absorption fine structure (EXAFS), X-ray absorption near edge structure (XANES), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), X-ray photoelectron spectroscopy (XPS), and other characterization techniques have been used to accurately represent single-atom catalysts. In this review, we discuss in depth these characterization techniques for Pt single-atom catalysts and focus on Fourier transformed EXAFS spectroscopy to study the coordination environment of Pt-M (M = Cl, O, C, N, S, Pt, Cu, Pd, Ni, Fe) for atomically dispersed Pt catalysts on diverse supports. We believe that this review will lead to better understanding of the effective characterization of Pt single-atom catalysts and promote further research on Pt single-atom catalysis in the future.
机译：单原子催化的新疆界多相催化领域由于其高为各种催化活性和选择性反应。不能清楚地可视化和催化剂由于特征与局限性仪器分辨率。表征技术的快速发展,高分辨率扫描隧道显微镜环形暗场扫描(STM)透射电子显微镜(HAADF-STEM),扩展x射线吸收精细结构(EXAFS),x射线吸收边附近结构(黄嘌呤),漫反射红外傅里叶变换光谱学(飘),x射线光电子能谱(XPS)和其他特征技术已经用于准确地代表单原子的催化剂。在深度为泰党的这些表征技术单原子催化剂和关注的傅里叶改变了EXAFS谱学研究协调环境Pt-M (M = Cl、O、C,N, S, Pt, Cu, Pd, Ni, Fe) for atomically)Pt催化剂分散在不同的支持。相信本文会导致更好的理解有效的表征单原子催化剂Pt和进一步推广研究在单原子催化Pt的未来。

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  • 来源
    《Catalysis science & technology》 |2019年第18期|4821-4834|共14页
  • 作者

    Liu Qing; Zhang Zailei;

  • 作者单位

    Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Key Lab Low Carbon Energy & Chem Engn, Qingdao 266590, Shandong, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 汉语教学;
  • 关键词

    Catalysis; Resolving power; Catalystsplatinum;

    机译：催化;分辨能力;Catalystsplatinum;

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