Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Volume 193, 2016
Previous Article Next Article

Electrochemical transformation of individual nanoparticles revealed by coupling microscopy and spectroscopy

Author affiliations

Abstract

Although extremely sensitive, electrical measurements are essentially unable to discriminate complex chemical events involving individual nanoparticles. The coupling of electrochemistry to dark field imaging and spectroscopy allows the triggering of the electrodissolution of an ensemble of Ag nanoparticles (by electrochemistry) and the inference of both oxidation and dissolution processes (by spectroscopy) at the level of a single nanoparticle. Besides the inspection of the dissolution process from optical scattering intensity, adding optical spectroscopy reveals chemical changes through drastic spectral changes. The behaviours of single NPs and NP agglomerates are differentiated: in the presence of thiocyanate ions, the transformation of Ag single nanoparticles to AgSCN is investigated in the context of plasmonic coupling with the electrode; tentative interpretations for optically unresolved groups of nanoparticles are proposed.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 27 Apr 2016, accepted on 09 May 2016 and first published on 09 May 2016


Article type: Paper
DOI: 10.1039/C6FD00098C
Citation: Faraday Discuss., 2016,193, 339-352
  •   Request permissions

    Electrochemical transformation of individual nanoparticles revealed by coupling microscopy and spectroscopy

    V. Brasiliense, P. Berto, C. Combellas, R. Kuszelewicz, G. Tessier and F. Kanoufi, Faraday Discuss., 2016, 193, 339
    DOI: 10.1039/C6FD00098C

Search articles by author