Preparation and Electrocatalytic Activity of Gold Nanoparticles Immobilized on the Surface of 4-Mercaptobenzoyl-Functionalized Multiwalled Carbon Nanotubes

被引：18

作者：

Choi, Hyun-Jung ^{[1
]}

Jeon, In-Yup ^{[1
]}

Chang, Dong Wook ^{[1
]}

Yu, Dingshan ^{[2
]}

Dai, Liming ^{[2
]}

Tan, Loon-Seng ^{[3
]}

Baek, Jong-Beom ^{[1
]}

机构：

[1] UNIST, Inst Adv Mat & Devices, Interdisciplinary Sch Green Energy, Ulsan 689798, South Korea

[2] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

[3] USAF, Nanostruct & Biol Mat Branch AFRL RXBN, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

AU NANOPARTICLES; FUNCTIONALIZATION; NANOFIBERS; DISPERSION; FILMS; ACID;

D O I：

10.1021/jp109890u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multiwalled carbon nanotubes (MWCNTs) were functionalized with 4-mercaptobenzoic acid in a polyphosphoric acid/phosphorus pentoxide medium to produce 4-mercaptobenzoyl-functionalized MWCNTs (MB-MWCNTs). Gold nanoparticles (GNPs), stabilized by trisodium citrate, were prepared from the in situ reduction of gold(III) chloride trihydrate by sodium borohydride in the presence of MB-MWCNTs dispersed in ethanol. The morphology of the resulting GNP/MB-MWCNT hybrid showed that GNPs were formed with an average diameter of 4.3 nm, and these were uniformly deposited on the surface of the MB-MWCNTs. High-resolution transmission electron microscopy and X-ray photoelectron spectroscopy studies revealed that the GNPs had a well-defined crystal structure. Cyclic voltammetry results showed a high electrocatalytic activity and electrochemical stability of the GNP/MB-MWCNT hybrid in both acidic and basic media.

引用

页码：1746 / 1751

页数：6

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