Strategy to controllably release gold nanoparticles from hexadecyltrimethylammonium bromide-capped gold microparticles

Keng Liang Ou; Kuang Hsuan Yang; Tsui Yun Lo; Yu Chuan Liu; You Zuo Chen

doi:10.1016/j.electacta.2012.03.065

Strategy to controllably release gold nanoparticles from hexadecyltrimethylammonium bromide-capped gold microparticles

Keng Liang Ou, Kuang Hsuan Yang, Tsui Yun Lo, Yu Chuan Liu, You Zuo Chen

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

As shown in the literature, cationic surfactants of hexadecyltrimethylammonium bromide (CTAB) were generally employed for syntheses of Au nanorods (NRs). For obtaining different aspect rations of NRs, the molar ratio of CTAB to Au(III) is ranging from 200 to 400. In this work, we report a new strategy to release Au nanoparticles (NPs) from CTAB-capped Au microparticles (MPs) by using sonoelectrochemical methods. In this optimal approach, the molar ratio of CTAB to Au(III) is ca. 0.6, which is far lower than the ratio used for synthesizing Au NRs. Au NPs with predominant (1 1 1) face and size of 10 nm in diameter can be readily obtained in solution, which is accompanied by the simultaneous reduction in pH, after complete removal of CTAB.

Original language	English
Pages (from-to)	272-277
Number of pages	6
Journal	Electrochimica Acta
Volume	70
DOIs	https://doi.org/10.1016/j.electacta.2012.03.065
Publication status	Published - May 30 2012

Keywords

Au nanoparticles
Hexadecyltrimethylammonium bromide
Ratio
Sonoelectrochemical methods

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2012.03.065

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title = "Strategy to controllably release gold nanoparticles from hexadecyltrimethylammonium bromide-capped gold microparticles",

abstract = "As shown in the literature, cationic surfactants of hexadecyltrimethylammonium bromide (CTAB) were generally employed for syntheses of Au nanorods (NRs). For obtaining different aspect rations of NRs, the molar ratio of CTAB to Au(III) is ranging from 200 to 400. In this work, we report a new strategy to release Au nanoparticles (NPs) from CTAB-capped Au microparticles (MPs) by using sonoelectrochemical methods. In this optimal approach, the molar ratio of CTAB to Au(III) is ca. 0.6, which is far lower than the ratio used for synthesizing Au NRs. Au NPs with predominant (1 1 1) face and size of 10 nm in diameter can be readily obtained in solution, which is accompanied by the simultaneous reduction in pH, after complete removal of CTAB.",

keywords = "Au nanoparticles, Hexadecyltrimethylammonium bromide, Ratio, Sonoelectrochemical methods",

author = "Ou, {Keng Liang} and Yang, {Kuang Hsuan} and Lo, {Tsui Yun} and Liu, {Yu Chuan} and Chen, {You Zuo}",

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doi = "10.1016/j.electacta.2012.03.065",

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journal = "Electrochimica Acta",

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T1 - Strategy to controllably release gold nanoparticles from hexadecyltrimethylammonium bromide-capped gold microparticles

AU - Ou, Keng Liang

AU - Yang, Kuang Hsuan

AU - Lo, Tsui Yun

AU - Liu, Yu Chuan

AU - Chen, You Zuo

PY - 2012/5/30

Y1 - 2012/5/30

N2 - As shown in the literature, cationic surfactants of hexadecyltrimethylammonium bromide (CTAB) were generally employed for syntheses of Au nanorods (NRs). For obtaining different aspect rations of NRs, the molar ratio of CTAB to Au(III) is ranging from 200 to 400. In this work, we report a new strategy to release Au nanoparticles (NPs) from CTAB-capped Au microparticles (MPs) by using sonoelectrochemical methods. In this optimal approach, the molar ratio of CTAB to Au(III) is ca. 0.6, which is far lower than the ratio used for synthesizing Au NRs. Au NPs with predominant (1 1 1) face and size of 10 nm in diameter can be readily obtained in solution, which is accompanied by the simultaneous reduction in pH, after complete removal of CTAB.

AB - As shown in the literature, cationic surfactants of hexadecyltrimethylammonium bromide (CTAB) were generally employed for syntheses of Au nanorods (NRs). For obtaining different aspect rations of NRs, the molar ratio of CTAB to Au(III) is ranging from 200 to 400. In this work, we report a new strategy to release Au nanoparticles (NPs) from CTAB-capped Au microparticles (MPs) by using sonoelectrochemical methods. In this optimal approach, the molar ratio of CTAB to Au(III) is ca. 0.6, which is far lower than the ratio used for synthesizing Au NRs. Au NPs with predominant (1 1 1) face and size of 10 nm in diameter can be readily obtained in solution, which is accompanied by the simultaneous reduction in pH, after complete removal of CTAB.

KW - Au nanoparticles

KW - Hexadecyltrimethylammonium bromide

KW - Ratio

KW - Sonoelectrochemical methods

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JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Strategy to controllably release gold nanoparticles from hexadecyltrimethylammonium bromide-capped gold microparticles

Abstract

Keywords

ASJC Scopus subject areas

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