Polyaniline/zinc bismuthate nanocomposites for the enhanced electrochemical performance of the determination of L-Cysteine

A simple in-situ aniline monomer polymerizing process in aqueous solution has been used for the synthesis of the polyaniline/zinc bismuthate nanocomposites. X-ray diffraction (XRD) pattern shows that the nanocomposites have cubic ZnBi38O58 structure. Transmission electron microscopy (TEM) and high-r...

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Bibliographic Details
Published in:Measurement : journal of the International Measurement Confederation 2018-11, Vol.128, p.55-62
Main Authors: Zhang, Y., Ma, Y., Wei, T., Lin, F.F., Qiu, F.L., Pei, L.Z.
Format: Article
Language:English
Subjects:
Aniline
Chemical synthesis
Cysteine
Diffraction patterns
Electrocatalysis
Electrochemical analysis
Electrochemical performance
Glassy carbon
Glassy carbon electrode
L-Cysteine
Nanocomposites
Nanorods
Polyaniline/zinc bismuthate nanocomposites
Polyanilines
Polymerization
Reproducibility
Transmission electron microscopy
X-ray diffraction
Zinc
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Summary:A simple in-situ aniline monomer polymerizing process in aqueous solution has been used for the synthesis of the polyaniline/zinc bismuthate nanocomposites. X-ray diffraction (XRD) pattern shows that the nanocomposites have cubic ZnBi38O58 structure. Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) techniques show that the amorphous polyaniline attaches firmly to the surface of the zinc bismuthate nanorods. The polyaniline/zinc bismuthate nanocomposites modified glassy carbon electrode (GCE) exhibits good electrocatalytic activity toward L-Cysteine. The electrochemical performance for the determination of L-Cysteine is greatly enhanced which may be contributed to the polyaniline and synergistic role between polyaniline and zinc bismuthate nanorods. The influences of scan rate, L-Cysteine concentration and polyaniline content are investigated. The peak current is linearly dependent on the scan rate and L-Cysteine concentration. The limit of detection (LOD) decreases obviously from 0.032 μM to 0.012 μM with increasing the polyaniline content from 10 wt% to 40 wt%. The polyaniline/zinc bismuthate nanocomposites modified GCE shows good reproducibility and stability.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2018.06.036