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Fabrication of nanocomposite electrochemical sensors with poly(3,4-ethylenedioxythiophene) conductive polymer and Au nanoparticles adsorbed on carboxylated nanocrystalline cellulose

Jinshi Fan, Shaoping Liang, Mingming Zhang, Guiyun Xu
2017

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Au nanoparticles (AuNPs) were prepared by reducing HAuCl4 with NaBH4, and then adsorbed uniformly on the surface of carboxylated nanocrystalline cellulose (CNCC). The obtained AuNPs/CNCC particles were doped into a conductive polymer of poly(3,4-ethylenedioxythiophene) (PEDOT) to yield a highly conductive nanocomposite, which was deposited onto a glassy carbon electrode (GCE) by an electrochemical method. The PEDOT/AuNPs/CNCC nanocomposite showed low electrochemical impedance and good
more » ... alytic activity toward ascorbic acid. Based on this novel nanocomposite material, an amperometric sensor was developed for the detection of ascorbic acid with a detection limit as low as 0.29 μM. When operated at -0.15 V, the sensor detected ascorbic acid in the range of 0.88 μM to 15000 µM.
doi:10.21967/jbb.v3i1.142 fatcat:cwr4kvtsv5g2fltyux4ckil4rq
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Jinshi Fan, Shaoping Liang, Mingming Zhang, Guiyun Xu. "Fabrication of nanocomposite electrochemical sensors with poly(3,4-ethylenedioxythiophene) conductive polymer and Au nanoparticles adsorbed on carboxylated nanocrystalline cellulose." (2017) 2018