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Corresponding Author

Xiao-gang HAO(xghao@tyut.edu.cn);
Chun-feng XUE(cfxue@fudan.edu.cn)

Abstract

Organic–inorganic hybrid films composed of polyaniline/nickel hexacyanoferrate (PANI/NiHCF) were fabricated on platinum substrates using unipolar pulse one-step electrodeposition. The deposition mechanism of hybrid film was proposed: Due to high potential of unipolar pulse electrodeposition, which avoided the reduction of Fe(CN)63-, the films with high electrocatalytic property and “insoluble” form of NiHCF were achieved. The morphology and composition of PANI/NiHCF hybrid film were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT-IR). The effect of pulse potential on the electrochemical performance of hybrid film was investigated in detail. Results showed that pulse potential had a major impact on electroactivity and stability of the film, and the optimal deposition potential was 1.0 V. The hybrid ?lms exhibited high electrocatalytic activity, eligible sensitivity and low detection limit in detecting hydrogen peroxide (H2O2). The linear range for the detection of H2O2 was from 4.0×10-4 to 1.6×10-2 mol·L-1 with a correlation coefficient of 0.9991, a sensitivity of 1075 mA·(mol·L-1)-1·cm-2 and a detection limit of 6.09×10-5 mol·L-1.

Graphical Abstract

Keywords

unipolar pulse, polyaniline, nickel hexacyanoferrate, hybrid film, hydrogen peroxide

Publication Date

2014-12-28

Online Available Date

2014-05-14

Revised Date

2014-05-09

Received Date

2014-03-11

References

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