A Novel Kind of Proton Exchange Membrane: Characters and Proton Transport Mechanism

Cheng, Peng; Yong, Yang; Wang, Li; Huang, Min; Shi, Xuefei

doi:10.1142/s0256767909004461

Cited by 1 publication

(1 citation statement)

References 9 publications

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“…Moreover, Nafion modified electrodes can be easily prepared by casting a small volume of the solution onto the surface of the electrode and allowing the solvent to evaporate. The resulting films possess a high adhesion to the surface of the modified electrode and a low swelling in aqueous media [34,35] . Therefore, Nafion has attractive properties for immobilizing enzymes at the surface of the electrode.…”

Section: Introductionmentioning

confidence: 99%

Poly(3,4-ethylenedioxythiophene methanol)/ascorbate oxidase/nafion-single-walled carbon nanotubes biosensor for voltammetric detection of Vitamin C

Wen

Liu

et al. 2012

Chin J Polym Sci

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Vitamin C (VC) content in commercial juices was voltammetrically determined using a highly selective and sensitive poly(3,4-ethylenedioxythiophene methanol)/ascorbate oxidase/Nafion-single-walled carbon nanotubes (PEDOTM/AO/Nafion-SWCNT) biosensor. The biocompatible PEDOTM matrix was prepared facilely by the one-step electrochemical deposition technique in lithium perchlorate aqueous solutions. AO was dip-coated on the surface of the biocompatible PEDOTM matrix. The mixture of Nafion-SWCNT was dip-cast onto the surface of AO layer when it was obtained by blending Nafion solution and SWCNT dispersion together in a volume ratio of 1:1. The prepared PEDOTM/AO/Nafion-SWCNT biosensor was used for the voltammetric determination of VC, which exhibited the good linear range (4.0 × 10 −5 −3 × 10 −3 mol/L), low detection limit (13 µmol/L), pronounced sensitivity (1.4072 mA (mmol/L) −1 cm −2 ), high bioaffinity (low apparent Michaelis-Menten constant), good stability (good repeatability), high specificity (good anti-interference ability) coupled with the good reliability and feasibility (the determination of VC in commercial juices). Meanwhile, the good aqueous solubility and the low onset oxidation potential of EDOTM will be more beneficial to the application in biosensor field compared to 3,4-ethylenedioxythiophene. Moreover, the good biocompatibility of PEDOTM matrix and high selectivity of Nafion-SWCNT films also provide a promising platform for the development of biosensing devices.

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Section: Introductionmentioning

confidence: 99%