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X-ray absorption fine structure spectroscopy in nanomaterials

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Abstract

X-ray absorption fine structure (XAFS) spectroscopy has been widely used for decades in a wide range of scientific fields, including physics, chemistry, biology, materials sciences, environmental sciences, etc. This review article is devoted to the applications of XAFS in nanomaterials. The basic principles of XAFS are briefly described from the view point of practical application, including its theory, data analysis and experiments. Using selected examples from recent literatures, the power of XAFS in determination of local atomic/electronic structures is illustrated for various nanomaterials, covering metal and semiconductor nanoparticles, catalysts, core/shell structures, ultrathin nanosheets, and so on. The utilization of time-resolved XAFS technique is also briefly introduced, for in-situ probing the nucleation/growth processes of nanomaterials and identifying reaction intermediates of nanostructured catalysts under operando conditions.

摘要

X射线吸收精细结构谱学(XAFS)技术是近40年来同步辐射领域最为重要的实验技术之一, 在物理、 化学、 生物、 材料和能源科学等诸多领域得到了广泛应用. 本文简要综述了XAFS技术在纳米材料科学研究中的应用. 首先介绍了XAFS的基本原理、 实验方法及数据分析处理过程, 进一步通过对XAFS技术在应用于纳米材料研究中的一些代表性工作进行概述, 如金属与半导体纳米颗粒、 催化剂、 核壳结构、 二维超薄纳米片, 以及原位XAFS技术在研究纳米材料的原位成核/生长过程和纳米催化剂在工作状态下的中间态表征等, 展示了XAFS技术在纳米材料领域对其原子和电子结构表征的强大能力.

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  1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China

    Zhihu Sun, Qinghua Liu, Tao Yao, Wensheng Yan & Shiqiang Wei

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Zhihu Sun received his PhD degree from the University of Science and Technology of China (USTC) in 2005. After post-doctoral research at the National Institute of Advanced Industrial Science and Technology of Japan, he became an associate professor of the National Synchrotron Radiation Laboratory at USTC. His research interest includes the applications of synchrotron radiation techniques to low-dimensional nanostructures and magnetic semiconductor materials.

Qinghua Liu received his PhD degree in 2009 from the USTC. He is an associate professor at the National Synchrotron Radiation Laboratory at USTC. His research interest includes on X-ray absorption spectroscopy and photocatalysis.

Shiqiang Wei is a full professor at the USTC. He received his PhD degree from the USTC in 1992. After working as a senior researcher at the National Institute of Advanced Industrial Science and Technology of Japan, he was a gainer of the “One-hundred Talents Project” of Chinese Academy of Science in 1998, won the “Chinese National Science Fund for Distinguished Young Scholars” in 2007, and became the chief scientist at the National Synchrotron Radiation Laboratory of China in 2008. His current research interest covers the development of synchrotron radiation techniques and their applications in advanced function materials.

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Sun, Z., Liu, Q., Yao, T. et al. X-ray absorption fine structure spectroscopy in nanomaterials. Sci. China Mater. 58, 313–341 (2015). https://doi.org/10.1007/s40843-015-0043-4

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