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Electrochemical sensor based on the composite of molybdenum carbides and multiwalled carbon nanotube modified electrode for the ultrasensitive detection of rifampicin

Abstract

The composite of molybdenum carbides and multiwalled carbon nanotube (MWCNTs−Mo2C) modified glassy carbon electrode (GCE) was developed to prepare the electrochemical sensor for the ultrasensitive detection of rifampicin. Solvothermal and anneal methods were used to synthesize the MWCNTs−Mo2C composite. Morphology and size of synthesized materials were characterized by scanning electron microscope and atomic force microscope. The MWCNTs−Mo2C composite shows a large effective surface area and reveals high electron transfer rate, indicating it have excellent electrocatalytic activity. Under optimal conditions, the modified electrode used to analyze rifampicin shows an excellent linear relationship between the peak current and the rifampicin concentration in the range from 0.5 to 74 μM. The limit of detection was 0.045 μM (S/N=3). The sensor was successfully applied to the actual drugs and human serum testing with satisfactory results.

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Publication details

The article was received on 16 Apr 2018, accepted on 27 Jun 2018 and first published on 06 Jul 2018


Article type: Paper
DOI: 10.1039/C8AY00852C
Citation: Anal. Methods, 2018, Accepted Manuscript
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    Electrochemical sensor based on the composite of molybdenum carbides and multiwalled carbon nanotube modified electrode for the ultrasensitive detection of rifampicin

    Q. Huang, X. Li, S. Feng, W. Zhuge, F. Liu, J. Peng and S. Mo, Anal. Methods, 2018, Accepted Manuscript , DOI: 10.1039/C8AY00852C

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