An integrated anode based on porous Ni/Cu(OH)2 nanospheres for non-enzymatic glucose sensing

• Published in: Microchemical journal 2019-12, Vol.151, p.104197, Article 104197
• Main Authors: Zhe, Taotao, Sun, Xinyu, Liu, Yingnan, Wang, Qinzhi, Li, Fan, Bu, Tong, Jia, Pei, Lu, Qingyou, Wang, Jihao, Wang, Li
• Format: Article
• Language: English
• Subjects: Glucose; Nickel foam; Non-enzymatic sensor; Porous nanosphere
• ISSN: 0026-265X; 1095-9149
• DOI: 10.1016/j.microc.2019.104197

Novel 3D porous Ni/Cu(OH)2 nanospheres (Ni/Cu(OH)2 NS) were directly grown on a Ni foam (NF) via a facile one-step potentiostatic deposition synthesis route. The resultant Ni/Cu(OH)2 NS possessed an abundance of catalytic which gave them excellent catalytic properties for the electrochemical detection of glucose in alkaline conditions. Using these NS in a promising and integrated non-enzymatic glucose sensor, a high sensitivity of 8722 μA mM−1 cm−2, a low detection limit of 1.27 μM, and a linear detection range from 10 to 1490 μM were obtained at the Ni/Cu(OH)2 NS/NF anode. Additionally, the proposed sensor exhibited excellent anti-interference capability, good reproducibility, and long duration stability. It was successfully applied to glucose detection in human blood serum, showing excellent effectiveness. •Porous Ni/Cu(OH)2 nanospheres supported on the Ni foam was fabricated by a facile one-step potentiostatic deposition strategy.•As-prepared Ni/Cu(OH)2/NF anode shows excellent catalytic activity to glucose.•The porous Ni/Cu(OH)2 nanospheres could offer more abundant active sites and easier access to electrolyte.