Electrodeposition of bimetallic NiPt nanosheet arrays on carbon papers for high performance nonenzymatic disposable glucose sensors

• Published in: Journal of materials science. Materials in electronics Vol. 32; no. 17; pp. 22493 - 22505
• Main Authors: Zhou, Jielin, Yin, Haoyong, Wang, Ling, Zhao, Heyu, Zhang, Zongfei, Gong, Jianying, Zheng, Yifan, Nie, Qiulin
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2021; Springer Nature B.V
• Subjects: Bimetals; Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electrodes; Glucose; Gold; Intermetallic compounds; Materials Science; Nanosheets; Nickel base alloys; Nickel compounds; Optical and Electronic Materials; Platinum compounds; Selectivity; Sensor arrays; Sensors; X ray photoelectron spectroscopy
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-06735-3

Disposable nonenzymatic glucose sensors are constructed by electrodepositing NiPt nanosheet arrays on carbon papers. The obtained NiPt nanosheet arrays are fully examined by various techniques including SEM, TEM, XRD and XPS. The glucose sensing performance of the optimal NiPt-3 nanosheet electrode is studied using cyclic voltammetry and chronoamperometry techniques in alkaline electrolyte (0.1 M NaOH). Compared with the counterpart of Ni electrode, the NiPt-3 nanosheet electrode shows highly improved nonenzymatic glucose sensing performance. The sensors achieve a wider linear detection range between 1 μM-10.8 mM with high sensitivity of 2225.5 μA·mM −1 ·cm −2 . The detection limit at 0.55 V is estimated to be 0.4 μM (S/N = 3). The improved glucose sensing performance of NiPt-3 nanosheets may be due to the sheet-like structure and the incorporation of Pt into the NiPt alloy nanosheets. In addition, the high selectivity and preferable feasibility for serum sample analysis demonstrate that the NiPt-3 nanosheet may be a promising disposable electrode for nonenzymatic glucose sensing measurements.