科研之友
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摘要
Stable and well dispersed nickel nanoparticles (NiNPs) were fabricated and embedded in a novel polymer sulfonate and benzimidazole functionalized poly (arylene ether ketone) (S-BI-PAEK) film. After drop-casting the mixed solution of S-BI-PAEK and NiSO4 on glassy carbon electrode (GCE) surface, the uniformly distributed NiNPs were formed and stably embedded in S-BI-PAEK film by in-situ electrochemical reduction method. The embedment and well dispersity of NiNPs in S-BI-PAEK film was probably attributed to the strong chelation of sulfonate and benzimidazole functional groups contained in S-BI-PAEK toward Ni2+ ions, as well as the transferability of Ni2+ ions in S-BI-PAEK film. The NiNPs/S-BI-PAEK composite film was characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). It exhibited good electrocatalytic activity toward glucose oxidation in 0.1mol L-1 NaOH solution with high stability. The NiNPs/S-BI-PAEK/GCE showed a fast amperometric response with a wide linear range from 1M to 4mM and a low detection limit of 200nmolL(-1) (S/N=3) for the determination of glucose by amperometry at a potential of 0.55V. Finally it was successfully employed to determine glucose in human serum. Therefore, the novel fabrication method of nickel nanoparticles was promising for the future development of non-enzymatic glucose sensor.
- 出版日期2017-12
- 单位浙江大学
