Investigation of copper oxidation states in plasmonic nanomaterials by XAS and Raman spectroscopy.

Clémence Queffélec,Florian Forato,Bruno Bujoli,D Andrew Knight,Emiliano Fonda,Bernard Humbert

PHYSICAL CHEMISTRY CHEMICAL PHYSICS（2020）

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摘要

Plasmonic core-shell-isolated nanoparticles are promising nanoplatforms for photocatalysis and for low detection analysis. This paper describes the characterization of a 2,2 '-bipyridine phosphonate functionalized Ag@TiO2 nanocomposite which complexes copper ions by enhanced Raman spectroscopy and X-ray absorption (XANES and EXAFS). We distinguished Cu(i) from Cu(ii) complexes using shell-isolated nanoparticle enhanced Raman (SHINERS) combined with XAS spectroscopy.

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关键词

copper oxidation states,plasmonic nanomaterials,xas

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