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PAn/Cu Bismuthate Nanoflake Composites with Enhanced Electrochemical Performance for TA

[ Vol. 12 , Issue. 1 ]

Author(s):

Z. Wang, H.J. Chen, F.F. Lin, L. Yan, Y. Zhang*, L.Z. Pei* and C.G. Fan   Pages 48 - 57 ( 10 )

Abstract:


Background: Measuring tartaric acid in liquid food, such as fruits or fruit products is of great importance for assessing the quality of the food.

Objective: The aim of the research is to obtain polyaniline/Cu bismuthate nanoflake composites by an in-situ polymerization route for the electrochemical detection of tartaric acid.

Methods: Polyaniline/Cu bismuthate nanoflake composites were prepared by in-situ aniline polymerizing route in aqueous solution. The obtained products were characterized by X-Ray diffraction (XRD), Transmission Electron Microscopy (TEM) and high-resolution TEM (HRTEM), respectively. The electrochemical performance for tartaric acid detection has been investigated by cyclic voltammetry method using polyaniline/Cu bismuthate nanoflake composites modified glassy carbon electrode.

Results: The nanocomposites comprise of tetragonal CuBi2O4 phase. Polyaniline particles with the size of less than 100 nm attach to the surface of the nanoflakes. A pair of quasi-reversible cyclic voltammetry peaks are located at -0.01 V and +0.04 V, respectively at the 20wt.% polyaniline/Cu bismuthate nanoflake composites modified glassy carbon electrode. The limit of detection is 0.58 μM with the linear range of 0.001-2 mM. The linear range increases from 0.005-2 mM to 0.001-2 mM and limit of detection decreases from 2.3 μM to 0.43 μM with increasing the polyaniline content from 10wt.% to 40wt.%.

Conclusion: Comparing with the Cu bismuthate nanoflakes modified glassy carbon electrode, polyaniline/ Cu bismuthate nanoflake composites modified glassy carbon electrode shows enhanced electrochemical performance for tartaric acid detection.

Keywords:

Polyaniline, Cu bismuthate nanoflakes, composites, electrochemical performance, tartaric acid, capillary electrophoresis.

Affiliation:

Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, Key Laboratory for Power Metallurgy Technology and Advanced Materials of Xiamen, Xiamen University of Technology, Xiamen, Fujian 361024, Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002, Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan, Anhui 243002



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