КФУ. Карточка публикации. Structure and catalytic activity of ultrasmall Rh, Pd and (Rh + Pd) nanoparticles obtained by mediated electrosynthesis

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STRUCTURE AND CATALYTIC ACTIVITY OF ULTRASMALL RH, PD AND (RH + PD) NANOPARTICLES OBTAINED BY MEDIATED ELECTROSYNTHESIS

Форма представления

Статьи в зарубежных журналах и сборниках

Год публикации

2019

Язык

английский

Авторы, сотрудники КФУ

Зиганшина Альбина Юлдузовна, автор

Библиографическое описание на языке оригинала

V. V. Yanilkin, N. V. Nastapova, G. R. Nasretdinova, Yu. N. Osin, V. G. Evtjugin, A. Yu. Ziganshina, A. T. Gubaidullin, Structure and catalytic activity of ultrasmall Rh, Pd and (Rh + Pd) nanoparticles obtained by mediated electrosynthesis // New J. Chem. – 2019. – 43. – 3931—3945.

Аннотация

Efficient electrosynthesis of ultrasmall spherical mono- and bimetallic nanoparticles (NPs) of Rh and Pd stabilized in the shell of cetyltrimethylammonium chloride (CTAC) in the solution bulk was carried out by methylviologen (MV) mediated reduction of equimolar amounts of Pd(II) and Rh(III) (1.5 mM) in the presence of CTAC (10 mM) at controlled potentials of the MV2+/MV˙+ redox couple in a water/0.1 M NaCl medium at room temperature. Similar electrosynthesis of RhNPs also effectively proceeds when poly(N-vinylpyrrolidone) (10 mM) is used as a stabilizer. Metal ions are quantitatively converted to NPs upon consumption of the theoretical amount of electricity. Sizes of isolated PdNPs and RhNPs are 4.6 ? 0.9 nm and 1.7 ? 0.3 nm, respectively. Bimetallic (Pd,Rh)NPs were obtained by three procedures: (i) preliminary synthesis of RhNPs followed by reduction of Pd(II) ((Rh/Pd)NPs, 2.2 ? 0.7 nm); (ii) preliminary synthesis of PdNPs followed by reduction of Rh(III) ((Pd/Rh)NPs, 4.9 ? 1.0 nm); (iii) joint reduction of Pd(II) and Rh(III) ((Pd–Rh)NPs, 3.1 ? 0.5 nm). In all cases, solid-solution alloy (Pd,Rh)NPs are obtained. In an aqueous medium, all the NPs obtained are catalytically active in the hydrogenation of p-nitrophenol with sodium borohydride to p-aminophenol, but their use in the Suzuki coupling reaction of iodobenzene with phenylboronic acid does not lead to the target product. An increase in the CTAC concentration by 7.5 times leads to an increase in the catalytic activity of PdNPs in both types of reactions.

Ключевые слова

palladium nanoparticle

Название журнала

NEW JOURNAL OF CHEMISTRY

URL

https://pubs.rsc.org/en/content/articlelanding/2019/NJ/C8NJ06233A

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https://repository.kpfu.ru/?p_id=262891

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Зиганшина Альбина Юлдузовна	ru_RU
dc.date.accessioned	2019-01-01T00:00:00Z	ru_RU
dc.date.available	2019-01-01T00:00:00Z	ru_RU
dc.date.issued	2019	ru_RU
dc.identifier.citation	V. V. Yanilkin, N. V. Nastapova, G. R. Nasretdinova, Yu. N. Osin, V. G. Evtjugin, A. Yu. Ziganshina, A. T. Gubaidullin, Structure and catalytic activity of ultrasmall Rh, Pd and (Rh + Pd) nanoparticles obtained by mediated electrosynthesis // New J. Chem. – 2019. – 43. – 3931—3945.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=262891	ru_RU
dc.description.abstract	NEW JOURNAL OF CHEMISTRY	ru_RU
dc.description.abstract	Efficient electrosynthesis of ultrasmall spherical mono- and bimetallic nanoparticles (NPs) of Rh and Pd stabilized in the shell of cetyltrimethylammonium chloride (CTAC) in the solution bulk was carried out by methylviologen (MV) mediated reduction of equimolar amounts of Pd(II) and Rh(III) (1.5 mM) in the presence of CTAC (10 mM) at controlled potentials of the MV2+/MV˙+ redox couple in a water/0.1 M NaCl medium at room temperature. Similar electrosynthesis of RhNPs also effectively proceeds when poly(N-vinylpyrrolidone) (10 mM) is used as a stabilizer. Metal ions are quantitatively converted to NPs upon consumption of the theoretical amount of electricity. Sizes of isolated PdNPs and RhNPs are 4.6 ? 0.9 nm and 1.7 ? 0.3 nm, respectively. Bimetallic (Pd,Rh)NPs were obtained by three procedures: (i) preliminary synthesis of RhNPs followed by reduction of Pd(II) ((Rh/Pd)NPs, 2.2 ? 0.7 nm); (ii) preliminary synthesis of PdNPs followed by reduction of Rh(III) ((Pd/Rh)NPs, 4.9 ? 1.0 nm); (iii) joint reduction of Pd(II) and Rh(III) ((Pd–Rh)NPs, 3.1 ? 0.5 nm). In all cases, solid-solution alloy (Pd,Rh)NPs are obtained. In an aqueous medium, all the NPs obtained are catalytically active in the hydrogenation of p-nitrophenol with sodium borohydride to p-aminophenol, but their use in the Suzuki coupling reaction of iodobenzene with phenylboronic acid does not lead to the target product. An increase in the CTAC concentration by 7.5 times leads to an increase in the catalytic activity of PdNPs in both types of reactions.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Structure and catalytic activity of ultrasmall Rh, Pd and (Rh + Pd) nanoparticles obtained by mediated electrosynthesis	ru_RU
dc.type	Статьи в зарубежных журналах и сборниках	ru_RU