Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods

Sensors

卷:16

Norinsan Kamil Othman¹  Muhammad Azmi Abdul Hamid¹  Roslinda Shamsudin²  Lim Kar Keng²  Naif H. Al-Hardan² 

[1] Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Malaysia;

[2] School of Applied Physics, Faculty of Science &

关键词: non-enzymatic biosensor;    zinc oxide;    nanorods;    hydrogen peroxide;   

DOI  :  10.3390/s16071004

来源: DOAJ

【 摘 要 】

Zinc oxide (ZnO) nanorods (NRs) have been synthesized via the hydrothermal process. The NRs were grown over a conductive glass substrate. A non-enzymatic electrochemical sensor for hydrogen peroxide (H2O2), based on the prepared ZnO NRs, was examined through the use of current-voltage measurements. The measured currents, as a function of H2O2 concentrations ranging from 10 μM to 700 μM, revealed two distinct behaviours and good performance, with a lower detection limit (LOD) of 42 μM for the low range of H2O2 concentrations (first region), and a LOD of 143.5 μM for the higher range of H2O2 concentrations (second region). The prepared ZnO NRs show excellent electrocatalytic activity. This enables a measurable and stable output current. The results were correlated with the oxidation process of the H2O2 and revealed a good performance for the ZnO NR non-enzymatic H2O2 sensor.

【 授权许可】

Unknown