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Sulfuric Acid Solutions of [Pt(OH)4(H2O)2]: A Platinum Speciation Survey and Hydrated Pt(IV) Oxide Formation for Practical Use Научная публикация

Журнал Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X
Вых. Данные Год: 2022, Том: 61, Номер: 25, Страницы: 9667–9684 Страниц : 18 DOI: 10.1021/acs.inorgchem.2c01134
Ключевые слова Catalysts; Coordination reactions; Single crystals; Sulfuric acid
Авторы Vasilchenko Danila 1 , Tkachenko Pavel 1,2 , Tkachev Sergey 1 , Popovetskiy Pavel 1 , Komarov Vladislav 1 , Asanova Tatyana 1 , Asanov Igor 1 , Filatov Evgeny 1 , Maximovskiy Eugene 1 , Gerasimov Evgeny 3 , Zhurenok Angelina 3 , Kozlova Ekaterina 3
Организации
1 Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russia
2 Novosibirsk State University, 630090 Novosibirsk, Russia
3 Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia

Информация о финансировании (1)

1 Российский научный фонд 21-73-10038 (121071400043-3)

Реферат: The systematic study of the platinum speciation in sulfuric acid solutions of platinum (IV) hydroxide {[Pt(OH)4(H2O)2], HHPA} was performed with the use of a combination of methods. Depending on the prevailing Pt form, the three regions of H2SO4 concentration were marked: (1) up to 3 M H2SO4 forms unstable solutions gradually generating the PtO2·xH2O particles; (2) 4–12 M H2SO4, where the series of mononuclear aqua–sulfato complexes ([Pt(SO4)n(H2O)6–n]4–2n, where n = 0···4) dominate; and (3) 12 M and above, where, along with [Pt(SO4)n(H2O)6–n]4–2n species, the polynuclear Pt(IV) species and complexes with a bidentate coordination mode of the sulfato ligand are formed. For the first time, the salts of the aqua–hydroxo Pt(IV) cation [Pt(OH)2(H2O)4]SO4 (triclinic and monoclinic phases) were isolated and studied with a combination of methods, including the single-crystal X-ray diffraction. The formation of PtO2·xH2O particles in sulfuric acid solutions (1–3 M) of HHPA and their spectral characteristics and morphology were studied. The deposition of PtO2·xH2O was highlighted as a convenient method to prepare various Pt-containing heterogeneous catalysts. This possibility was illustrated by the preparation of Pt/g-C3N4 catalysts, which show an excellent performance in catalytic H2 generation under visible light irradiation with a quantum efficiency up to 5% and a rate of H2 evolution up to 6.2 mol·h–1 per gram of loaded platinum.
Библиографическая ссылка: Vasilchenko D. , Tkachenko P. , Tkachev S. , Popovetskiy P. , Komarov V. , Asanova T. , Asanov I. , Filatov E. , Maximovskiy E. , Gerasimov E. , Zhurenok A. , Kozlova E.
Sulfuric Acid Solutions of [Pt(OH)4(H2O)2]: A Platinum Speciation Survey and Hydrated Pt(IV) Oxide Formation for Practical Use
Inorganic Chemistry. 2022. V.61. N25. P.9667–9684. DOI: 10.1021/acs.inorgchem.2c01134 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Даты:
Поступила в редакцию: 4 апр. 2022 г.
Опубликована online: 14 июн. 2022 г.
Опубликована в печати: 27 июн. 2022 г.
Идентификаторы БД:
Web of science: WOS:000819958500001
Scopus: 2-s2.0-85132950056
РИНЦ: 49150362
Chemical Abstracts: 2022:1514401
PMID (PubMed): 35700060
OpenAlex: W4282827675
Цитирование в БД:
БД Цитирований
Scopus 12
РИНЦ 9
Web of science 12
OpenAlex 11
Альметрики: