Non-Enzymatic Electrochemical Sensor Based on Sliver Nanoparticle-Decorated Carbon Nanotubes

Molecules

Dongqing Xu¹  Xueji Zhang¹  Lisheng Qian¹  Bingbing Hou¹  Guodong Liu¹ 

[1] Institute of Biomedical and Health Science, School of Life and Health Science, Anhui Science and Technology University, Fengyang 233100, Anhui, China;

关键词: carbon nanotubes;    silver nanoparticles;    nonenzymatic;    sensor;    hydrogen peroxide;   

DOI  :  10.3390/molecules24183411

来源: DOAJ

【 摘 要 】

The authors report a non-enzymatic electrochemical sensor based on a sliver nanoparticle-decorated carbon nanotube (AgNPs-MWCNT). Highly-dispersed AgNPs were loaded on the MWCNT surface though a simple and facile two-step method. The morphology, components, and the size of the AgNPs-MWCNT nanocomposite were characterized by transmission electron microscopy, X-ray diffraction, and ICP analysis. Benefitting from the synergistic effect between the AgNPs and MWCNT, the AgNPs-MWCNT nanocomposite exhibited high electrocatalytic activity for H₂O₂; the AgNPs-MWCNT electrochemical sensor was prepared by coating the AgNPs-MWCNT nanocomposite on a glassy carbon electrode, and it showed a fast and sensitive response to H₂O₂ with a linear range of 1 to 1000 μM. The detection limit was 0.38 μM (S/N = 3). The sensor was applied to detect H₂O₂ in spiked human blood serum samples with satisfactory results.

【 授权许可】

Unknown