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Journal of Chemistry
Volume 2016 (2016), Article ID 9138961, 6 pages
http://dx.doi.org/10.1155/2016/9138961
Research Article

Nanowires Nickel Oxide and Nanospherical Manganese Oxide Synthesized via Low Temperature Hydrothermal Technique for Hydrogen Peroxide Sensor

1Department of Electrical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
2Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Chemical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
4Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, Kanagawa 226-8501, Japan

Received 30 September 2015; Revised 11 December 2015; Accepted 18 January 2016

Academic Editor: Artur M. S. Silva

Copyright © 2016 Suriani Ibrahim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Binary catalyst nickel oxides (NiO) and manganese oxides (MnO) were prepared individually via hydrothermal route. The catalysts were characterized by scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET) analysis, cyclic voltammetry (CV), and amperometry. Morphology studies revealed physical structure of nanowires nickel oxide and spherical manganese oxide with estimated length of 0.3–2.3 μm and diameter of 0.2–0.8 μm, respectively. Surface areas obtained for nickel oxide and manganese oxide were 68.9 m2 g−1 and 45.2 m2 g−1, respectively. Cyclic voltammetry exhibits electrochemical responses corresponding to the electrode surfaces. The linear responses of the binary catalyst modified gold electrodes with NiO-MnO were observed in the concentration range from 31.8 μM to 0.5 mM with the detection limit of 62.5 μM.