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Electrochemical synthesis of poly(3,4-ethylenedioxythiophene) doped with gold nanoparticles, and its application to nitrite sensing

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Abstract

The work describes the synthesis of a nanocomposite consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with gold nanoparticles (AuNPs) by electropolymerization of EDOT in a solution containing colloidal AuNPs. The nanocomposite possesses good conductivity and a 3D microporous network structure owing to the presence of AuNPs. These act as both conductive dopant and template for the growth of the microporous polymer. A glassy carbon electrode modified with the nanocomposite exhibits excellent electrocatalytic activity towards oxidation of nitrite. Best operated at a voltage of 0.8 V (vs. Ag/AgCl), it is capable of detecting nitrite in the 0.2 to 1400 μM concentration range, with a detection limit of 60 nM.

A highly sensitive and selective electrochemical sensor for nitrite was developed based on the electrodeposited nanocomposite of conducting polymer poly(3,4-ethylenedioxythiophene) doped with gold nanoparticles.

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Acknowledgments

This research was supported by the National Natural Science Foundation of China (No. 21275087, 21422504), the Natural Science Foundation of Shandong Province of China (JQ201406), and the Taishan Scholar Program of Shandong Province, China.

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Authors and Affiliations

  1. Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

    Peipei Lin, Fenglian Chai, Ruiqiao Zhang, Guiyun Xu & Xiliang Luo

  2. Department of Breast Surgery, The Eighth Peoples’ Hospital of Qingdao, Qingdao, 266100, China

    Xiaojian Fan

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  1. Peipei Lin
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  2. Fenglian Chai
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  3. Ruiqiao Zhang
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  4. Guiyun Xu
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  5. Xiaojian Fan
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  6. Xiliang Luo
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Correspondence to Xiaojian Fan or Xiliang Luo.

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Lin, P., Chai, F., Zhang, R. et al. Electrochemical synthesis of poly(3,4-ethylenedioxythiophene) doped with gold nanoparticles, and its application to nitrite sensing. Microchim Acta 183, 1235–1241 (2016). https://doi.org/10.1007/s00604-016-1751-5

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  • DOI: https://doi.org/10.1007/s00604-016-1751-5

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