Jiangsu Laboratory of Advanced Functional Materials, Department of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, 215500, China.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215500, China.
Mikrochim Acta. 2018 Jan 10;185(2):98. doi: 10.1007/s00604-017-2624-2.
A nanoporous platinum-yttrium alloy (NP-PtY) was fabricated by dealloying ribbons of a PtYAl alloy. Owing to the high porosity and the synergistic effect of Y in the Pt backbone, the NP-PtY exhibits superior structural stability, reproducibility and electrocatalytic activity. An electrochemical sensor was developed for the highly sensitive and selective detection of dopamine (DA) based on the use of a glassy carbon electrode modified with NP-PtY alloy and graphene. The sensor, best operated at 0.16 V vs. SCE, has a linear range covering the 0.9 to 82 μM concentration range, a 0.36 μM detection limit (at S/N = 3), and good selectivity over tyramine, tryptamine, phenethylamine, uric acid, and ascorbic acid. It gave satisfactory results in the determination of DA in spiked samples of urine. Graphical abstract Nanoporous platinum-yttrium alloy (NP-PtY) was fabricated by means of a one-step dealloying process. A glassy carbon electrode modified with the NP-PtY and graphene nanocomposite exhibits a wide linear range and a low detection limit towards dopamine. The sensor has remarkable reproducibility, stability and selectivity.
纳米多孔铂-钇合金（NP-PtY）是通过脱合金 PtYAl 合金条带制备的。由于具有高孔隙率和 Y 在 Pt 骨架中的协同效应，NP-PtY 表现出优异的结构稳定性、重现性和电催化活性。基于纳米多孔铂-钇合金和石墨烯修饰的玻碳电极，开发了一种用于高灵敏度和选择性检测多巴胺（DA）的电化学传感器。该传感器在 0.16 V 对 SCE 的最佳操作下，具有 0.9 至 82 μM 浓度范围的线性范围、0.36 μM 的检测限（在 S/N = 3 时）以及对酪胺、色胺、苯乙胺、尿酸和抗坏血酸的良好选择性。它在尿液中添加的 DA 测定中给出了令人满意的结果。
摘要
通过一步脱合金工艺制备了纳米多孔铂-钇合金（NP-PtY）。修饰有 NP-PtY 和石墨烯纳米复合材料的玻碳电极对多巴胺表现出宽线性范围和低检测限。该传感器具有出色的重现性、稳定性和选择性。
