Oxidizing Properties of the Polysulfide Surfaces of Patronite VS4 and NbS3 Induced by (S2)2- Groups: Unusual Formation of Ag2S Nanoparticles | Sciact - CRIS-система Института катализа

Oxidizing Properties of the Polysulfide Surfaces of Patronite VS4 and NbS3 Induced by (S2)2- Groups: Unusual Formation of Ag2S Nanoparticles Научная публикация

Журнал

Advanced Materials Interfaces
ISSN: 2196-7350

Вых. Данные

Год: 2017, Том: 4, Номер: 23, Номер статьи : 1700999, Страниц : 5 DOI: 10.1002/admi.201700999

Ключевые слова

Composites, Patronite, Silver sulfide, Surface chemistry, Transition metal polysulfides

Авторы

Kozlova Mariia N. ¹ , Grayfer Ekaterina D. ¹ , Poltarak Pavel A. ^1,2 , Artemkina Sofya B. ^1,2 , Cherkov Alexander G. ² , Kibis Lidiya S. ^2,3 , Boronin Andrei I. ^2,3 , Fedorov Vladimir E. ^1,2

Организации

1	Nikolaev Institute of Inorganic Chemistry SB RAS, Acad. Lavrentiev Prosp. 3, Novosibirsk 630090, Russian Federation
2	Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russian Federation
3	Boreskov Institute of Catalysis SB RAS, Acad. Lavrentiev Prosp. 5, Novosibirsk 630090, Russian Federation

Информация о финансировании (1)

Российский научный фонд

14-13-00674

Similarly to transition metal dichalcogenides akin to MoS2, transition metal polysulfides like tri- and tetrachalcogenide materials are nowadays incorporated into catalysts and composites used for energy conversion and storage, etc. However, polysulfide structures feature -S-S- units, which make them strikingly different from the widely known MoS2 and other dichalcogenides. At the same time, their surface chemistry and its relation to properties are very little studied. Reported here is one of the first observations on the oxidizing properties of disulfide bridges (-S-S-)2- forming surfaces in polysulfide crystals. Upon interaction with silver salts or silver nanoparticles, MoS2 acts as most supports, that is, it stabilizes metallic Ag at its surface; in contrast, curiously, patronite VS4 and NbS3 stabilize Ag2S nanoparticles under identical reducing conditions. The Ag/MoS2, Ag2S/NbS3, and Ag2S/VS4 samples are characterized with X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. Apparently, the unexpected formation of Ag2S is due to complex redox processes involving disulfide fragments -S-S- of nanorods VS4 or nanoribbons NbS3, which are absent in MoS2 nanosheets. This result is important for fundamental understanding of the properties of sulfur-rich surfaces and also for contributing to the number of available synthetic paths toward Ag2S nanoparticles.

Kozlova M.N. , Grayfer E.D. , Poltarak P.A. , Artemkina S.B. , Cherkov A.G. , Kibis L.S. , Boronin A.I. , Fedorov V.E.
Oxidizing Properties of the Polysulfide Surfaces of Patronite VS4 and NbS3 Induced by (S2)2- Groups: Unusual Formation of Ag2S Nanoparticles
Advanced Materials Interfaces. 2017. V.4. N23. 1700999 :1-5. DOI: 10.1002/admi.201700999 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	14 авг. 2017 г.
Принята к публикации:	25 авг. 2017 г.
Опубликована online:	10 окт. 2017 г.
Опубликована в печати:	1 дек. 2017 г.

Web of science:	WOS:000417647800022
Scopus:	2-s2.0-85031112485
РИНЦ:	35483552
Chemical Abstracts:	2017:1940255
OpenAlex:	W2762569142

БД	Цитирований
Web of science	18
Scopus	19
РИНЦ	20
OpenAlex	19