Non-enzymatic electrochemical hydrogen peroxide biosensor based on reduction graphene oxide-persimmon tannin‑platinum nanocomposite.
作者： Yong Huang , Yewei Xue , Junxiang Zeng , Shanshan Li , Zhihong Wang
DOI: 10.1016/J.MSEC.2018.07.021
关键词:
摘要: Abstract Hydrogen peroxide (H2O2) is one of the most universal and essential ingredients in distinct biological tissues. Herein, a novel non-enzymatic sensor based on reduction graphene oxide-persimmon tannin‑platinum nanocomposite (RGO-PT-Pt) was exploited for H2O2 detection. RGO-PT-Pt prepared by procedure with ascorbic acid as reducing agent characterized Scanning electron microscopy (SEM), Transmission (TEM), ultraviolet visible spectroscopy (UV–vis) Fourier infrared (FT-IR). Taking advantage high electro-catalytic efficiency Pt nanoparticles, electronic conductivity large surface area RGO, significant adsorption ability PT metal ions its prevention agglomeration to promote RGO dispersion, revealed better catalytic towards via synergistic effect. Under optimal conditions, biosensor exhibited outstanding electrocatalytic activity reduction. The amperometric response demonstrated linear relationship concentration from 1.0 to100 μM correlation coefficient 0.9931. limit detection 0.26 μM (S/N = 3) time 3 s. Furthermore, fabricated practical applicability quantification human serum samples an excellent recovery rate. Due performance such fast time, low limit, stability selectivity, has potential application clinical diagnostics.
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