Babu, K.J. and Zahoor, A. and Nahm, K.S. and Aziz, M.A. and Periasamy, V. and Kumar, G.G. (2016) Manganese dioxide-vulcan carbon@silver nanocomposites for the application of highly sensitive and selective hydrazine sensors. New Journal of Chemistry, 40 (9). pp. 7711-7720. ISSN 1144-0546, DOI https://doi.org/10.1039/c6nj00268d.
Full text not available from this repository.Abstract
Manganese dioxide (MnO2)-vulcan carbon (VC)@silver (Ag) (core@shell) nanocomposites were synthesized through a simple wet chemical method without using hazardous organic reagents, polymeric micelles, templates or catalysts. The synthesized MnO2-VC@Ag exhibited a MnO2-VC core and Ag shell, and the thickness of shell was found to be 23 nm. The obtained diffraction patterns confirmed that the prepared nanocomposite consists of tetragonal and face-centred cubic structures of MnO2 and Ag nanostructures, respectively. Cyclic voltammetry and amperometric techniques were adopted to electrochemically characterize the MnO2-VC@Ag nanospheres for hydrazine oxidation in phosphate buffer solution. Under the optimized conditions, the fabricated sensor exhibited a good electrochemical performance toward hydrazine oxidation, offering a broad linearity of 0.1 to 350 μM, with a relatively low detection limit of 100 nM and a high sensitivity of 0.33 μA μM-1 cm-2. In addition, anti-interference properties, good reproducibility, long term performance, good repeatability and real sample analysis were achieved for the constructed sensor, owing to the synergetic effects of the Ag and MnO2-VC nanostructures. The aforesaid attractive analytical performance and facile preparation of the MnO2-VC@Ag core-shell nanospheres are new features for electrocatalytic materials and may hold promise for the design and development of effective hydrazine sensors.
| Item Type: | Article |
|---|---|
| Funders: | University Grants Commission (UGC), New Delhi, India major Project Grant No. MRP-MAJOR-CHEM-2013-36681, Korea Government Ministry of Trade, Industry and Energy: Human Resources Development program (No. 20114030200060) of the Korea Institute of Technology Evaluation and Planning (KETEP) |
| Uncontrolled Keywords: | Carbon; Hydrazine; Manganese dioxide; Nanoshell; Phosphate buffered saline; Silver nanoparticle; Unclassified drug; Vulcan carbon |
| Subjects: | Q Science > QC Physics T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 04 Dec 2017 06:33 |
| Last Modified: | 04 Dec 2017 06:33 |
| URI: | http://eprints.um.edu.my/id/eprint/18425 |
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