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A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo6S9-xIx Nanowire Modified Glassy Carbon Electrode

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Lin, H, Cheng, H, Miao, XP, Papakonstantinou, P, Mihailovic, D and Li, MX (2009) A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo6S9-xIx Nanowire Modified Glassy Carbon Electrode. ELECTROANALYSIS, 21 (23). pp. 2602-2606. [Journal article]

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DOI: 10.1002/elan.200900162

Abstract

A simple and enzymeless amperometric sensor for the detection of H2O2 based on a new kind of nanomaterial Mo-6 S9-xIx (MoSI) nanowires (NWs) was developed. The construction of the sensing platform was based on strong electrostatic interactions between negatively charged MoSI NWs and positively charged thionin molecules. MoSI NWs act as not only a good substrate for the immobilization of redox mediator thionin, but also a promoter for electrocatalysis of H2O2. The fabricated sensor showed a wide linear range over the concentration of H2O2 from 5 mu M to 2.8 mM with a measurable lowest detection of 0.8 mu M; furthermore, it exhibited good stability and reproducibility.

Item Type:Journal article
Keywords:Hydrogen peroxide; MoSI nanowires; Thionin; Electrocatalysis; Amperometric sensors; Sensors
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:6389
Deposited By:Professor Pagona Papakonstantinou
Deposited On:13 Jan 2010 09:51
Last Modified:18 Aug 2011 11:56

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