1. Nanocomposites consisting of nanoporous platinum-silicon and graphene for electrochemical determination of bisphenol A.
- Author
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Zhang, Shufei, Shi, Yufan, Wang, Jiamin, Xiao, Lei, Yang, Xiaofang, Cui, Rongjing, and Han, Zhida
- Subjects
CARBON electrodes ,TERNARY alloys ,BISPHENOL A ,COMPOSITE materials ,BISPHENOLS ,GRAPHENE ,CARBON composites ,DETECTION limit - Abstract
Three-dimensional nanoporous PtSi (NP-PtSi) alloy was prepared by dealloying ternary PtSiAl alloy ribbons. By combining the nanoporous morphology of PtSi and graphene (GR), a new composite material was developed, which was used to modify the surface of a glassy carbon electrode (GCE). The resulting modified electrodes showed an excellent electrocatalytic activity towards the electro oxidation of bisphenol A. Based on differential pulse voltammetry measurements, NP-PtSi/GR/GCE showed linear response over the concentration range 0.30 to 85 μM bisphenol A, while the detection limit was found to be 0.11 μM (S/N = 3). NP-PtSi/GR/GCE showed also satisfactory stability and selectivity over various compounds present in real samples, and they were successfully applied to the determination of bisphenol A in inoculated milk samples. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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