Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing
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 suita...
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37864/ http://psasir.upm.edu.my/id/eprint/37864/1/Highly%20exposed.pdf |
| _version_ | 1848848720888594432 |
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| author | Thien, Gregory Soon How Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee |
| author_facet | Thien, Gregory Soon How Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee |
| author_sort | Thien, Gregory Soon How |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T09:38:59Z |
| format | Article |
| id | upm-37864 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:38:59Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
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| spelling | upm-378642015-12-08T01:21:55Z http://psasir.upm.edu.my/id/eprint/37864/ Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing Thien, Gregory Soon How Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee 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. Nature Publishing Group 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/37864/1/Highly%20exposed.pdf 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 http://www.nature.com/articles/srep05044 10.1038/srep05044 |
| spellingShingle | Thien, Gregory Soon How Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title | Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title_full | Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title_fullStr | Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title_full_unstemmed | Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title_short | Highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| title_sort | highly exposed {001} facets of titanium dioxide modified with reduced graphene oxide for dopamine sensing |
| url | http://psasir.upm.edu.my/id/eprint/37864/ http://psasir.upm.edu.my/id/eprint/37864/ http://psasir.upm.edu.my/id/eprint/37864/ http://psasir.upm.edu.my/id/eprint/37864/1/Highly%20exposed.pdf |