Investigation of copper oxidation states in plasmonic nanomaterials by XAS and Raman spectroscopy.
Clemence QueffelecFlorian ForatoBruno BujoliD Andrew KnightEmiliano FondaBernard HumbertPublished in: Physical chemistry chemical physics : PCCP (2020)
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.