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Updated: Jan 28, 2026

Asymmetrical Flow Field-Flow Fractionation for Sizing of Gold Nanoparticles in Suspension
Published on: September 11, 2020
Effect of Size on Hydrogen Adsorption on the Surface of Deposited Gold Nanoparticles
Andrey Gatin1, Maxim Grishin2, Nadezhda Dokhlikova3
1Semenov Institute of Chemical Physics Russian Academy of Sciences, 4 Kosygin street, Moscow 119991, Russia. akgatin@yandex.ru.
Abstract:
An experimental study of molecular hydrogen adsorption on single gold nanoparticles of various sizes deposited on the surface of highly oriented pyrolytic graphite (HOPG) was carried out by means of scanning tunneling microscopy and spectroscopy. The effect of size on the HOPG/Au system was established. Hydrogen was dissociatively chemisorbed on the surface of gold nanoparticles with an average size of 5⁻6 nanometers. An increase in the size of nanoparticles to 10 nm or more led to hydrogen chemisorption being inhibited and unable to be detected.
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