Characterising the surface and interior chemistry of core-shell nanoparticles using scanning transmission electron microscopy.
作者： B.G. Mendis , A.J. Craven
DOI: 10.1016/J.ULTRAMIC.2010.11.002
关键词: Particle 、 Shell (structure) 、 Tin 、 Energy filtered transmission electron microscopy 、 Nanoparticle 、 Energy-dispersive X-ray spectroscopy 、 Chemistry 、 Scanning transmission electron microscopy 、 Core (optical fiber) 、 Analytical chemistry
摘要: Abstract A method for extracting core and shell spectra from core–shell particles with varying to volume fractions is described. The extracts the information a single EELS spectrum image of particle. distribution O N was correctly reproduced nanoparticle TiN Ti-oxide shell. In addition, Cu Cu-oxide obtained, extracted L 2,3 -core showed required change in near edge fine structure. can be used multiple linear least squares fitting raw data image. effect certain approximations on numerical accuracy, such as treating perfect sphere, well intrinsic detection limits technique have also been explored. most suitable qualitative, rather than quantitative, work.
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