基于Teflon/纳米金的新型NO微传感器制备及性能分析

Analysis on fabrication and performance of novel NO electrochemical microsensor based on Teflon/Au nanoparticles

目的探讨基于纳米金修饰玻璃纤维构建的新型一氧化氮(NO)微传感器的性能。方法以玻璃纤维为基底材料,采用原位化学种子-生长技术制备了一种NO微传感器,并使用安培响应法考察该微传感器的各种性能。结果该NO微传感器对NO反应非常灵敏,其线性范围为7.2nmol/L至11.7μmol/L,相关系数(r)为0.998,检出限为3.6nmol/L。结论成功制备了一种基于纳米金柱电极的电化学微传感器,该NO微传感器具有灵敏度高、线性范围宽、重现性好和抗干扰能力强等优点。

Objective To explore the performance of the novel nitric oxide（NO） electrochemical microsensor based on Au nano- particles（nano-Au） modified glass-fiber. Methods With columnar glass-fiber as the substrate material,the in-situ chemical seedgrowth technology was adopted to fabricate one kind of electrochemical microsensor based on gold nanoparticles pole electrodes and the amperometric response method was used to investigate the various properties of the NO microsensor. Results This microsensor had high sensitivity response to NO,its linear range was 7.2 nmol/L-11.7 μmol/L（r=0. 998） with a detection limit of 3.6 nmol/ L. Conclusion A novel electrochemical microsensor based on nano-Au pole electrode was fabricated. The NO microsensor posseses high sensitivity,wide linear range,good reproducibility and excellent anti-interference ability.