Advanced Methods of Electron Microscopy in Catalysis Research
作者： Miguel José-Yacamán , Arturo Ponce , Sergio Mejía-Rosales , Francis Leonard Deepak
DOI: 10.1016/B978-0-12-407702-7.00004-8
关键词:
摘要: Abstract In this section the understanding of nanocatalysts, post-aberration corrected electron microscopy is highlighted. A brief introduction to principles TEM, HRTEM and STEM presented, subsequent which concept aberration introduced. The theory history correction in that has been employed over previous decades, serves enhance our understanding, comparison existing imaging techniques known so far detailed. STEM-HAADF technique microscopes highlighted its advantage conventional TEM presented. HAADF-STEM combination with various spectroscopic such as EELS EDS can atomic nanocatalysts an unprecedented way, never before. This well demonstrated examples (on supported substrates unsupported nanoparticles themselves). Both experimental simulated STEM/HRTEM are presented together. These include metallic nanoparticles, bimetallic (core-shell alloys), clusters, multimetallic systems nanowires nanoplates layered transition metal chalcogenides. In-situ heating experiments carried out within microscope also included present current state art research being elucidate atom-by-atom. Thus capabilities advanced now common recently use, combined theoretical support there a strong platform certainly established area nanocatalysis research.
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