Functionalization of amorphous carbon nanotubes for au nanoparticles hybridization

Dian, L.Y. and Johan, M.R. (2015) Functionalization of amorphous carbon nanotubes for au nanoparticles hybridization. Fullerenes Nanotubes and Carbon Nanostructures, 23 (2). pp. 181-186. ISSN 1536-383X, DOI https://doi.org/10.1080/1536383x.2013.869220.

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Abstract

Our study focuses on selection of nitric acid, sulfuric acid, citric acid, and hydrochloric acid as the most suitable oxidation agent for a-CNT. Nitric acid functionalized a-CNT has the highest value of zeta potential -142.9 mV, followed by H2SO4, citric acids, and HCl functionalized samples of -60.3 mV, -15.9 mV, and -3.2 mV, respectively. High values of zeta potential represents surface charges, which refers to carboxyl groups present on tubes' bodies. At the same time, auric chloride (AuCl3) solution treatment was applied on citric acid, nitric acid, hydrochloric acid, and sulfuric acid treated a-CNT at the same condition. Nitric acid treated a-CNT was found to have the highest weight percentage of gold (Au) content. Therefore, indirectly, we have proven that nitric acid adds the most carboxyl groups upon functionalization.

Item Type:	Article
Funders:	Higher Education Ministry of Malaysia University of Malaya through UM/MOHEHIR Grant UM.C/HIR/MOHE/ENG/12
Additional Information:	An8ic Times Cited:0 Cited References Count:20
Uncontrolled Keywords:	Carbon nanotubes, characterization, functionalization, gold,
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	04 Aug 2015 01:58
Last Modified:	04 Aug 2015 01:58
URI:	http://eprints.um.edu.my/id/eprint/13845

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