Synthesis and Concentration of Organosols of Silver Nanoparticles Stabilized by AOT: Emulsion Versus Microemulsion | Sciact - CRIS-система Института катализа

Synthesis and Concentration of Organosols of Silver Nanoparticles Stabilized by AOT: Emulsion Versus Microemulsion Научная публикация

Журнал

Langmuir
ISSN: 0743-7463 , E-ISSN: 1520-5827

Вых. Данные

Год: 2018, Том: 34, Номер: 8, Страницы: 2815-2822 Страниц : 8 DOI: 10.1021/acs.langmuir.7b04071

Ключевые слова

reverse microemulsions; micelles; size; polymers; charge; laser; gold; inks

Авторы

Bulavchenko Alexander I. ¹ , Arymbaeva Aida T. ¹ , Demidova Marina G. ¹ , Popovetskiy Pavel S. ¹ , Plyusnin Pavel E. ¹ , Bulavchenko Olga A. ²

Организации

1	Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia
2	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Avenue, Novosibirsk 630090, Russia

Информация о финансировании (1)

Российский научный фонд

15-13-00080

In this work, we tried to combine the advantages of microemulsion and emulsion synthesis to obtain stable concentrated organosols of Ag nanoparticles, promising liquid-phase materials. Starting reagents were successively introduced into a micellar solution of sodium bis-(2-ethylhexyl)sulfosuccinate (AOT) in n-decane in the dynamic reverse emulsion mode. During the contact of the phases, Ag+ passes into micelles and Na+ passes into emulsion microdroplets through the cation exchange AOTNaOrg + AgNO3Aq = AOTAgOrg + NaNO3Aq. High concentrations of NaNO3 and hydrazine in the microdroplets favor an osmotic outflow of water from the micelles, which reduces their polar cavities to ∼2 nm. As a result, silver ions are contained in the micelles, and the reducing agent is present mostly in emulsion microdroplets. The reagents interact in the polar cavities of micelles to form ∼7 nm Ag nanoparticles. The produced nanoparticles are positively charged, which permitted their electrophoretic concentration to obtain liquid concentrates (up to 30% Ag) and a solid Ag–AOT composite (up to 75% Ag). Their treatment at 250 °C leads to the formation of conductive films (180 mOhm per square). The developed technique makes it possible to increase the productivity of the process by ∼30 times and opens up new avenues of practical application for the well-studied microemulsion synthesis.

Bulavchenko A.I. , Arymbaeva A.T. , Demidova M.G. , Popovetskiy P.S. , Plyusnin P.E. , Bulavchenko O.A.
Synthesis and Concentration of Organosols of Silver Nanoparticles Stabilized by AOT: Emulsion Versus Microemulsion
Langmuir. 2018. V.34. N8. P.2815-2822. DOI: 10.1021/acs.langmuir.7b04071 WOS Scopus РИНЦ CAPlus PMID OpenAlex

Поступила в редакцию:	28 нояб. 2017 г.
Принята к публикации:	22 янв. 2018 г.
Опубликована online:	12 февр. 2018 г.
Опубликована в печати:	27 февр. 2018 г.

Web of science:	WOS:000426614100028
Scopus:	2-s2.0-85042640382
РИНЦ:	35518958
Chemical Abstracts:	2018:178876
PMID (PubMed):	29376385
OpenAlex:	W2784866585

БД	Цитирований
Web of science	33
Scopus	35
РИНЦ	41
OpenAlex	38