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Operando Surface Characterization on Catalytic and Energy Materials from Single Crystals to Nanoparticles
ACS Nano ( IF 15.8 ) Pub Date : 2020-11-19 , DOI: 10.1021/acsnano.0c07549
Joong Il Jake Choi 1, 2 , Taek-Seung Kim 1, 2 , Daeho Kim 1, 2 , Si Woo Lee 1, 2 , Jeong Young Park 1, 2
Affiliation  

Modern surface science faces two major challenges, a materials gap and a pressure gap. While studies on single crystal surface in ultrahigh vacuum have uncovered the atomic and electronic structures of the surface, the materials and environmental conditions of commercial catalysis are much more complicated, both in the structure of the materials and in the accessible pressure range of analysis instruments. Model systems and operando surface techniques have been developed to bridge these gaps. In this Review, we highlight the current trends in the development of the surface characterization techniques and methodologies in more realistic environments, with emphasis on recent research efforts at the Korea Advanced Institute of Science and Technology. We show principles and applications of the microscopic and spectroscopic surface techniques at ambient pressure that were used for the characterization of atomic structure, electronic structure, charge transport, and the mechanical properties of catalytic and energy materials. Ambient pressure scanning tunneling microscopy and X-ray photoelectron spectroscopy allow us to observe the surface restructuring that occurs during oxidation, reduction, and catalytic processes. In addition, we introduce the ambient pressure atomic force microscopy that revealed the morphological, mechanical, and charge transport properties that occur during the catalytic and energy conversion processes. Hot electron detection enables the monitoring of catalytic reactions and electronic excitations on the surface. Overall, the information on the nature of catalytic reactions obtained with operando spectroscopic and microscopic techniques may bring breakthroughs in some of the global energy and environmental problems the world is facing.

中文翻译:

从单晶到纳米粒子的催化和能量材料的Operando表面表征

现代表面科学面临两个主要挑战,即材料缺口和压力缺口。尽管在超高真空下对单晶表面进行的研究揭示了表面的原子和电子结构,但商业催化的材料和环境条件在材料的结构和分析仪器可承受的压力范围内都更为复杂。模型系统和操作已经开发出表面技术来弥合这些差距。在这篇评论中,我们重点介绍了在更现实的环境中表面表征技术和方法学发展的当前趋势,并着重介绍了韩国高级科学技术研究所的最新研究成果。我们展示了常压下的微观和光谱表面技术的原理和应用,这些技术用于表征原子结构,电子结构,电荷传输以及催化和能量材料的机械性能。环境压力扫描隧道显微镜和X射线光电子能谱使我们能够观察到在氧化,还原和催化过程中发生的表面重组。此外,我们介绍了环境压力原子力显微镜,该显微镜揭示了在催化和能量转化过程中发生的形态,机械和电荷传输性质。热电子检测可以监测表面上的催化反应和电子激发。总体而言,有关通过以下方法获得的催化反应的性质的信息操作光谱和显微技术可能会为世界面临的一些全球能源和环境问题带来突破。
更新日期:2020-12-22
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