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Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing


Citation

Thien, Gregory Soon How and Pandikumar, Alagarsamy and Huang, Nay Ming and Lim, Hong Ngee (2014) Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing. Scientific Reports, 4. art. no. 5044. pp. 1-8. ISSN 2045-2322

Abstract

Titanium dioxide (TiO2) with highly exposed {001} facets was synthesized through a facile solvo-thermal method and its surface was decorated by using reduced graphene oxide (rGO) sheets. The morphology and chemical composition of the prepared rGO/TiO2 {001} nanocomposite were examined by using suitable characterization techniques. The rGO/TiO2 {001} nanocomposite was used to modify glassy carbon electrode (GCE), which showed higher electrocatalytic activity towards the oxidation of dopamine (DA) and ascorbic acid (AA), when compared to unmodified GCE. The differential pulse voltammetric studies revealed good sensitivity and selectivity nature of the rGO/TiO2 {001} nanocomposite modified GCE for the detection of DA in the presence of AA. The modified GCE exhibited a low electrochemical detection limit of 6 μM over the linear range of 2–60 μM. Overall, this work provides a simple platform for the development of GCE modified with rGO/TiO2 {001} nanocomposite with highly exposed {001} facets for potential electrochemical sensing applications.


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Official URL or Download Paper: http://www.nature.com/articles/srep05044

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1038/srep05044
Publisher: Nature Publishing Group
Keywords: Titanium dioxide (TiO2); Highly exposed {001} facets; Reduced graphene oxide (rGO)
Depositing User: Nabilah Mustapa
Date Deposited: 25 Sep 2015 01:36
Last Modified: 08 Dec 2015 01:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1038/srep05044
URI: http://psasir.upm.edu.my/id/eprint/37864
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