Time-Resolved Study of Thermal Decomposition Process of (NH4)2[PtCl6]: Intermediates and Pt Nucleation | Sciact - CRIS-система Института катализа

Time-Resolved Study of Thermal Decomposition Process of (NH4)2[PtCl6]: Intermediates and Pt Nucleation Научная публикация

Журнал

Vacuum
ISSN: 0042-207X

Вых. Данные

Год: 2021, Том: 194, Номер статьи : 110590, Страниц : 12 DOI: 10.1016/j.vacuum.2021.110590

Ключевые слова

Ammonium hexachloroplatinate; Pt L3-edge; Pt nanoparticles; Pt nucleation; Quick XAFS; Thermal decomposition

Авторы

Asanova T.I. ¹ , Fedorova E.A. ² , Asanov I.P. ¹ , Yusenko K.V. ³ , Gerasimov E.Y. ^2,4 , La Fontaine C. ⁵ , Roudenko O. ⁵ , Vasilchenko D.B. ¹ , Korenev S.V. ¹

Организации

1	Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrentiev ave. 3, 630090, Novosibirsk, Russia
2	Boreskov Institute of Catalysis SB RAS, Lavrentiev ave. 5, 630090, Novosibirsk, Russia
3	BAM Federal Institute for Materials Research and Testing, Richard-Willstätter Str. 11, Berlin, D-12489, Germany
4	Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia
5	Synchrotron SOLEIL, Saint-Aubin, Gif-sur-Yvette, France

Информация о финансировании (3)

1	The French National Research Agency	ANR10-EQPX-45
2	Российский фонд фундаментальных исследований	19-02-00308 (АААА-А19-119011590024-7)
3	Министерство образования и науки Российской Федерации	FWUZ-2021-0002 (121031700315-2)

Evolution in crystal, electronic and local atomic structures of Pt in ammonium hexachloroplatinate in the course of thermal decomposition in inert and reducing atmospheres have been studied by Powder X-Ray Diffraction (PXRD) and Quick X-ray Absorption Fine Structure (QXAFS) at Pt L3-edge for deeper understanding the thermally-induced solid state reaction and the formation of metallic nanoparticles. A three-step thermal decomposition mechanism of (NH4)2[PtCl6] in the inert atmosphere with the intermediate products Pt(NH3)2Cl2 and PtCl2 has been found instead one-[G.Meyer, A.Möller, J. Less. Common. Met. 170 (1991) 327–331] and two-step one [Q.Kong, F.Baudelet, J.Han, S.Chagnot, L.Barthe, J.Headspith, R. Goldsbrough, F.E.Picca, O.Spalla, Sci. Rep. 2 (2012) 1018–1025] considered early. In the reducing atmosphere, the thermal decomposition is a two-step process with the formation of the intermediate PtCl2. The best approach to determining the number of thermal decomposition steps turned out to be the express-analysis of QXAFS spectra offered in the papers, based on the simultaneous presentation of the most important parameters extracted from X-ray Absorption Near Edge Structure (XANES) and Fourier transformed Extended XAFS (EXAFS). This express-analysis was tested by comparison with results of various approaches such as conventional EXAFS fitting, linear combination fit (LCF), Multivariate Curve Resolution Alternating Least Squares method (MCR ALS). © 2021

Asanova T.I. , Fedorova E.A. , Asanov I.P. , Yusenko K.V. , Gerasimov E.Y. , La Fontaine C. , Roudenko O. , Vasilchenko D.B. , Korenev S.V.
Time-Resolved Study of Thermal Decomposition Process of (NH4)2[PtCl6]: Intermediates and Pt Nucleation
Vacuum. 2021. V.194. 110590 :1-12. DOI: 10.1016/j.vacuum.2021.110590 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	10 июн. 2021 г.
Принята к публикации:	8 сент. 2021 г.
Опубликована online:	11 сент. 2021 г.
Опубликована в печати:	1 дек. 2021 г.

Web of science:	WOS:000703322800004
Scopus:	2-s2.0-85115037817
РИНЦ:	47041393
Chemical Abstracts:	2021:2046341
OpenAlex:	W3200129429

БД	Цитирований
Scopus	1
OpenAlex	1