Adelaide Research & Scholarship
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https://hdl.handle.net/2440/66332
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| Type: | Journal article |
| Title: | Photoreduction kinetics of sodium tetrachloroaurate under synchrotron soft X-ray exposure |
| Author: | Fong, Y. Visser, B. Gascooke, J. Cowie, B. Thomsen, L. Metha, G. Buntine, M. Harris, H. |
| Citation: | Langmuir: the ACS journal of surfaces and colloids, 2011; 27(13):8099-8104 |
| Publisher: | Amer Chemical Soc |
| Issue Date: | 2011 |
| ISSN: | 0743-7463 1520-5827 |
| Statement of Responsibility: | Yuen-Yan Fong, Bradley R. Visser, Jason R. Gascooke, Bruce C. C. Cowie, Lars Thomsen, Gregory F. Metha, Mark A. Buntine, and Hugh H. Harris |
| Abstract: | We report on the time evolution of the sodium tetrachloroaurate (NaAuCl(4)) 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 Au(III) to Au(I) and then Au(I) to Au(0). We unambiguously show that XPS photoreduction occurs in stepwise fashion via the Au(I) state. Both photoreduction steps undergo first-order kinetics. |
| Keywords: | Chlorides Gold Silicon Gold Compounds Spectrophotometry Oxidation-Reduction Kinetics Photochemistry Surface Properties Synchrotrons X-Rays |
| Rights: | Copyright © 2011 American Chemical Society |
| DOI: | 10.1021/la200463k |
| Published version: | http://dx.doi.org/10.1021/la200463k |
| Appears in Collections: | Aurora harvest 5 Chemistry publications Environment Institute publications |
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