Oxidation of Ag Nanoparticles in Aqueous Media: Effect of Particle Size and Capping | Sciact - CRIS-system of Boreskov Institute of Catalysis

Oxidation of Ag Nanoparticles in Aqueous Media: Effect of Particle Size and Capping Full article

Journal

Applied Surface Science
ISSN: 0169-4332

Output data

Year: 2014, Volume: 297, Pages: 75-83 Pages count : 9 DOI: 10.1016/j.apsusc.2014.01.081

Tags

Oxidation, Resistive switching effect, Silver nanoparticles, X-ray photoelectron spectroscopy

Authors

Mikhlin Yuri L. ¹ , Vishnyakova Elena A. ^1,2 , Romanchenko Alexander S. ¹ , Saikova Svetlana V. ² , Likhatski Maxim N. ¹ , Larichev Yurii V. ³ , Tuzikov Fedor V. ³ , Zaikovskii Vladimir I. ³ , Zharkov Sergey M. ^2,4

Affiliations

1	Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of sciences, Akademgorodok 50/24, Krasnoyarsk 660036, Russia
2	Siberian Federal University, Svobodny pr. 79, Krasnoyarsk 660041, Russia c
3	Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of sciences, Lavrent’ev av., 5, Novosibirsk 630090, Russia
4	Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of sciences, Akademgorodok 50/38, Krasnoyarsk 660036, Russia

Funding (2)

1	Russian Foundation for Basic Research	12-03-31178
2	The Ministry of Education and Science of the Russian Federation	8580

Many applications and environmental impact of silver-bearing nanomaterials critically depend upon their specific reactivity, which is still poorly understood. Here, silver nanoparticles (Ag NPs) of about 3–5 nm and 10–12 nm in diameter, uncapped and capped with l-glucose or citrate, were prepared, characterized using UV–vis absorption spectroscopy, SAXS, TEM, and their (electro)chemical oxidation was examined in comparison with each other and bulk metal applying scanning tunneling microscopy and spectroscopy, cyclic voltammetry, and XPS. A resistive switching effect was found in the tunneling spectra measured in air at the smaller uncapped Ag NPs deposited on HOPG and was interpreted in terms of Ag transfer between the particle and the probe. The anodic oxidation of these Ag NPs in 1 M NaOH yielded 3D Ag2O, while only a layer of “primary” Ag(I) oxide emerged on larger uncapped nanoparticles during the potential sweep. The formation of AgO at higher potentials proceeded readily at the “primary” oxide but was retarded at the smaller NPs. The citrate- and glucose-capping substantially impeded the formation both of Ag2O and AgO. The findings highlighted, particularly, a non-trivial effect of particle size and transient mobilization of Ag species on the reactions of silver nanoparticles.

Mikhlin Y.L. , Vishnyakova E.A. , Romanchenko A.S. , Saikova S.V. , Likhatski M.N. , Larichev Y.V. , Tuzikov F.V. , Zaikovskii V.I. , Zharkov S.M.
Oxidation of Ag Nanoparticles in Aqueous Media: Effect of Particle Size and Capping
Applied Surface Science. 2014. V.297. P.75-83. DOI: 10.1016/j.apsusc.2014.01.081 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Oct 1, 2013
Accepted:	Jan 14, 2014
Published online:	Jan 27, 2014
Published print:	Apr 1, 2014

Web of science:	WOS:000331717200011
Scopus:	2-s2.0-84894633190
Elibrary:	21866660
Chemical Abstracts:	2014:219219
Chemical Abstracts (print):	160:418214
OpenAlex:	W2018738537

DB	Citing
Web of science	66
Scopus	67
Elibrary	67
OpenAlex	74