Facile preparation of gold-coated polydimethylsiloxane particles by in situ reduction without pre-synthesized seed

[Display omitted] Herein, we develop a facile strategy for the preparation of polydimethylsiloxane (PDMS) microparticles decorated with gold nanoparticles (AuNPs) by the reduction of gold chloride on the surface of PDMS microparticles using sodium citrate. To prepare the AuNP-seeded particles, AuNP-...

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Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 529; pp. 916 - 921
Main Authors Lim, Min-Cheol, Park, Kisang, Kim, Sae-Hyung, Ok, Gyeongsik, Choi, Sung-Wook, Woo, Min-Ah
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.09.2017
Subjects
Auric acid
Gold nanoparticle
PDMS particle
Reduction
Sodium citrate
PDMS particle
Reduction
Auric acid
Sodium citrate
Gold nanoparticle
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Summary:[Display omitted] Herein, we develop a facile strategy for the preparation of polydimethylsiloxane (PDMS) microparticles decorated with gold nanoparticles (AuNPs) by the reduction of gold chloride on the surface of PDMS microparticles using sodium citrate. To prepare the AuNP-seeded particles, AuNP-seeded PDMS microparticles were simply produced in situ by the reduction of a PDMS curing agent without the use of any additional reducing agents. The resultant AuNP-seeded PDMS microparticles were further reacted with sodium citrate and gold chloride to synthesize AuNP clusters on the PDMS microparticle surfaces. The synthesized AuNP-coated PDMS microparticles were extensively characterized using scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV–vis absorption spectroscopy. Notably, the surface coverage of AuNPs on the PDMS microparticles could be easily controlled using this proposed method.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2017.07.003