Photoreduction Kinetics of Sodium Tetrachloroaurate under Synchrotron Soft X-ray Exposure

Yuen-Yan Fong, Bradley Visser, Jason Gascooke, Bruce Cowie, Lars Thomsen, Gregory Metha, Mark Buntine, Hugh Harris

    Research output: Contribution to journalArticlepeer-review

    52 Citations (Scopus)

    Abstract

    We report on the time evolution of the sodium tetrachloroaurate (NaAuCl4) chemical properties as a function of soft X-ray exposure in a dried sample on a silicon surface using X-ray photoelectron spectroscopy (XPS). Our investigations provide mechanistic insight into the photoreduction kinetics from AuIII to AuI and then AuI to Au0. We unambiguously show that XPS photoreduction occurs in stepwise fashion via the AuI state. Both photoreduction steps undergo first-order kinetics.

    Original languageEnglish
    Pages (from-to)8099-8104
    Number of pages6
    JournalLangmuir
    Volume27
    Issue number13
    DOIs
    Publication statusPublished - 5 Jul 2011

    Fingerprint

    Dive into the research topics of 'Photoreduction Kinetics of Sodium Tetrachloroaurate under Synchrotron Soft X-ray Exposure'. Together they form a unique fingerprint.

    Cite this