Molybdenum disulfide nanosheet decorated with silver nanoparticles for selective detection of dopamine

Sookhakian, Mehran and Basirun, Wan Jefrey and Goh, Boon Tong and Woi, Pei Meng and Alias, Yatimah (2019) Molybdenum disulfide nanosheet decorated with silver nanoparticles for selective detection of dopamine. Colloids and Surfaces B: Biointerfaces, 176. pp. 80-86. ISSN 0927-7765

Full text not available from this repository.
Official URL: https://doi.org/10.1016/j.colsurfb.2018.12.058

Abstract

A metal-inorganic composite, comprises of silver-molybdenum disulfide nanosheets (Ag@MoS2) was synthesized at low temperature. The Ag@MoS2 composite was drop-casted onto a glassy carbon electrode (GCE) for a highly selective dopamine (DA) detection in the presence of interfering compounds such as uric acid (UA) and ascorbic acid (AA). The physicochemical analysis of the nanosheets was carried out with X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. The as-prepared Ag@MoS2-modified GCE displayed excellent electrocatalytic activity toward DA oxidation, with a 0.2 μM detection limit at a signal-to-noise ratio of 3 and an extensive linear detection range from 1 μM to 500 μM (R2 = 0.9983). The fabricated non-enzymatic electrochemical sensor demonstrated superior selectivity and stability for the detection of DA with the removal of AA and UA interfering compounds.

Item Type: Article
Uncontrolled Keywords: Molybdenum disulfide; Silver nanoparticles; Dopamine; Sensor
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Faculty of Science > Dept of Physics
Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 14 Jan 2019 08:45
Last Modified: 14 Jan 2019 08:45
URI: http://eprints.um.edu.my/id/eprint/19988

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