Department of Chemistry and Materials Engineering, Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, 215500, China.
College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, China.
Mikrochim Acta. 2020 Mar 23;187(4):241. doi: 10.1007/s00604-020-4219-6.
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. Graphical abstract Nanoporous PtSi (NP-PtSi) was fabricated by dealloying PtSiAl alloy ribbons. Based on the NP-PtSi alloy and graphene (GR) composites that modified glassy carbon electrode (GCE), a sensitive and stable electrochemical sensor was developed for the determination of bisphenol A by differential pulse voltammetric (DPV) method.
通过脱合金处理三元 PtSiAl 合金带，制备了三维纳米多孔 PtSi（NP-PtSi）合金。通过将 PtSi 的纳米多孔形态与石墨烯（GR）结合，开发了一种新型复合材料，用于修饰玻碳电极（GCE）的表面。所得修饰电极对双酚 A 的电化学氧化表现出优异的电催化活性。基于差分脉冲伏安法测量，NP-PtSi/GR/GCE 在 0.30 至 85 μM 双酚 A 的浓度范围内表现出线性响应，而检测限被发现为 0.11 μM（S/N=3）。NP-PtSi/GR/GCE 在实际样品中存在的各种化合物中也表现出令人满意的稳定性和选择性，并且它们成功地应用于接种牛奶样品中双酚 A 的测定。
