Narayanan, T.N. and Chiranjeevi, S. and Vusa, R. and Alwarappan, S. (2014) Selective and efficient electrochemical biosensing of ultrathin molybdenum disulfide sheets. Nanotechnology, 25. p. 33572. ISSN 0957-4484

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Atomically thin molybdenum disulfide (MoS2) sheets were synthesized and isolated via solventassisted chemical exfoliation. The charge-dependent electrochemical activities of these MoS2 sheets were studied using positively charged hexamine ruthenium (III) chloride and negatively charged ferricyanide/ferrocyanide redox probes. Ultrathin MoS2 sheet-based electrodes were employed for the electrochemical detection of an important neurotransmitter, namely dopamine (DA), in the presence of ascorbic acid (AA). MoS2 electrodes were identified as being capable of distinguishing the coexistence of the DA and the AA with an excellent stability. Moreover, the enzymatic detection of the glucose was studied by immobilizing glucose oxidase on the MoS2. This study opens enzymatic and non-enzymatic electrochemical biosensing applications of atomic MoS2 sheets, which will supplement their established electronic applications

Item Type: Article
Uncontrolled Keywords: atomic sheets; molybdenum disulfide; electrochemical biosensors; enzymatic; detection
Subjects: Electrochemical Sensors
Functional Materials
Depositing User: Dr. N Meyyappan
Date Deposited: 15 May 2015 09:27
Last Modified: 15 May 2015 09:27

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