Title of article
A combined XPS, XANES and STM/STS study of gold and silver deposition on metal sulphides
Author/Authors
Igor V. and Makhova، نويسنده , , L. and Mikhlin، نويسنده , , Yu. and Romanchenko، نويسنده , , A.، نويسنده ,
Pages
3
From page
75
To page
77
Abstract
Synchrotron radiation X-ray photoelectron spectroscopy (SR-XPS), scanning tunneling microscopy and spectroscopy (STM/STS) have been used to characterize gold and silver species spontaneously deposited from aqueous HAuCl4 or AgNO3 solutions onto metal sulphides. An increase in Au 4f binding energies was found for unusually large, 5 nm and larger, Au0 particles; concurrently, STS revealed a positive correlation between the current magnitude and the particle size. Possible mechanisms behind the effects were considered.
Keywords
Metal sulphides , size effects , Electronic tunneling , SR-XPS , Gold nanoparticles
Journal title
Astroparticle Physics
Record number
2028400
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