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A comparative study of the deposition of nanoscale Au–S intermediates from aqueous solutions on CuO, TiO2, AND α-Fe2O3 surfaces. / Likhatskii, M. N.; Karacharov, A. A.; Romanchenko, A. S. и др.
в: Journal of Structural Chemistry, Том 62, № 4, 04.2021, стр. 613-621.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - A comparative study of the deposition of nanoscale Au–S intermediates from aqueous solutions on CuO, TiO2, AND α-Fe2O3 surfaces
AU - Likhatskii, M. N.
AU - Karacharov, A. A.
AU - Romanchenko, A. S.
AU - Zaikovskii, V. I.
AU - Mikhlin, Yu L.
N1 - Publisher Copyright: © 2021, Pleiades Publishing, Ltd.
PY - 2021/4
Y1 - 2021/4
N2 - Products of the interaction between dispersed copper(II), iron(III) (hematite), and titanium(IV) (rutile) oxides and aqueous solutions containing liquid prenucleation intermediates formed in the reaction of HAuCl4 and sodium sulfide with the initial 1:3 molar ratio of the reagents are studied by X-ray photoelectron spectroscopy, Cu L-, Fe L-, Ti L-, O K X-ray absorption near edge structure spectroscopy in combination with transmission electron microscopy. It is found that in comparison with treatment of supports with a HAuCl4 solution, the amount of deposited gold significantly increases in the presence of sulfide ions. Gold nanoparticles covered with adsorbed sulfur form on three studied oxides as a decomposition product of strongly disordered gold(I) sulfide. On copper oxide, discernibly larger gold nanoparticles (with a diameter of about 10 nm against 3-5 nm on hematite and rutile) are observed. The surface of the support is sulfidized.
AB - Products of the interaction between dispersed copper(II), iron(III) (hematite), and titanium(IV) (rutile) oxides and aqueous solutions containing liquid prenucleation intermediates formed in the reaction of HAuCl4 and sodium sulfide with the initial 1:3 molar ratio of the reagents are studied by X-ray photoelectron spectroscopy, Cu L-, Fe L-, Ti L-, O K X-ray absorption near edge structure spectroscopy in combination with transmission electron microscopy. It is found that in comparison with treatment of supports with a HAuCl4 solution, the amount of deposited gold significantly increases in the presence of sulfide ions. Gold nanoparticles covered with adsorbed sulfur form on three studied oxides as a decomposition product of strongly disordered gold(I) sulfide. On copper oxide, discernibly larger gold nanoparticles (with a diameter of about 10 nm against 3-5 nm on hematite and rutile) are observed. The surface of the support is sulfidized.
KW - gold nanoparticles
KW - gold on oxides
KW - gold(I) sulfide
KW - transmission electron microscopy
KW - XANES
KW - XPS
UR - http://www.scopus.com/inward/record.url?scp=85107611520&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/8a1bc581-61c3-3930-92cd-c048ee960166/
U2 - 10.1134/S0022476621040132
DO - 10.1134/S0022476621040132
M3 - Article
AN - SCOPUS:85107611520
VL - 62
SP - 613
EP - 621
JO - Journal of Structural Chemistry
JF - Journal of Structural Chemistry
SN - 0022-4766
IS - 4
ER -
ID: 29293792