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Dai, Liming
Dr. Liming Dai's Group
Research Interests
  • Synthesis

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Preparation and electrocatalytic activity of gold nanoparticles immobilized on the surface of 4-mercaptobenzoyl-functionalized multiwalled carbon nanotubes

Cited 7 times inthomson ciCited 6 times inthomson ci
Title
Preparation and electrocatalytic activity of gold nanoparticles immobilized on the surface of 4-mercaptobenzoyl-functionalized multiwalled carbon nanotubes
Author
Choi, Hyun-JungJeon, In-YupChang, Dong WookYu, DingshanDai, LimingTan, Loon-SengBaek, Jong-Beom
Keywords
4-mercaptobenzoic acids; Average diameter; Basic media; Electrocatalytic activity; Electrochemical stabilities; Functionalized; Functionalized multi-walled carbon nanotubes; Gold Nanoparticles; In-situ; Sodium borohydrides; Trisodium citrates; X-ray photoelectron spectroscopy studies
Issue Date
201102
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.5, pp.1746 - 1751
Abstract
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.
URI
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DOI
http://dx.doi.org/10.1021/jp109890u
ISSN
1932-7447
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ECHE_Journal Papers
MNE_Journal Papers

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