title: A sensitive bisphenol A voltammetric sensor relying on AuPd nanoparticles/graphene composites modified glassy carbon electrode.
abstract: In this work, a sensitive bisphenol A (BPA) electrochemical sensor was assembled using a surfactant-free AuPd nanoparticles-loaded graphene nanosheets (AuPdNPs/GNs) modified electrode. The AuPdNPs monodispersed on GNs were successfully prepared by the spontaneous redox reaction between bimetallic precursors and GNs. Because no surfactant or halide ions were involved in the proposed synthesis, the prepared composite was enabled to directly modify a glassy carbon electrode without any pre-treatments. Moreover, due to the synergetic effect of Au and Pd, AuPdNPs/GNs displayed high electrochemical activity with well-defined voltammetric peaks of BPA oxidation and lower overpotential compared with monometallic PdNPs and AuNPs supported GNs. According to the results of differential pulse voltammetry (DPV), under optimized conditions, a good linear response was observed for the concentration of BPA in the range of 0.05-10μM with a detection limit of 8nM. The developed electrochemical sensor was successfully applied to determine BPA in food package. This study indicated that AuPdNPs/GNs based electrochemical sensor can be a promising and reliable tool for rapid analysis of emergency pollution affairs of BPA.
authors.affiliation: College of Food and Biological Engineering, Jimei University, Xiamen 361021, China; Xiamen Center for Disease Control and Prevention, Xiamen 361021, China.
authors.forename: Bingyuan
authors.initials: B
authors.lastname: Su
authors.affiliation: College of Food and Biological Engineering, Jimei University, Xiamen 361021, China; Xiamen Center for Disease Control and Prevention, Xiamen 361021, China.
authors.forename: Huilin
authors.initials: H
authors.lastname: Shao
authors.affiliation: College of Food and Biological Engineering, Jimei University, Xiamen 361021, China; Xiamen Center for Disease Control and Prevention, Xiamen 361021, China.
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.affiliation: College of Food and Biological Engineering, Jimei University, Xiamen 361021, China. Electronic address: xmchen@jmu.edu.cn.
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Marine Environmental Science and Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China.
authors.forename: Zhixiong
authors.initials: Z
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Marine Environmental Science and Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Xiamen University, Xiamen 361005, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
keywords: Bisphenol A; Determination; Gold-palladium; Graphene