Al-Hardan Naif H, Abdul Hamid Muhammad Azmi, Shamsudin Roslinda, Othman Norinsan Kamil, Kar Keng Lim
School of Applied Physics, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Malaysia.
Sensors (Basel). 2016 Jun 29;16(7):1004. doi: 10.3390/s16071004.
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.
通过水热法合成了氧化锌（ZnO）纳米棒（NRs）。这些纳米棒生长在导电玻璃基板上。基于制备的ZnO纳米棒，通过电流-电压测量对一种用于过氧化氢（H₂O₂）的非酶电化学传感器进行了检测。测量的电流作为H₂O₂浓度（范围从10 μM到700 μM）的函数，显示出两种不同的行为和良好的性能，对于低浓度范围的H₂O₂（第一区域），检测限（LOD）为42 μM，对于高浓度范围的H₂O₂（第二区域），检测限为143.5 μM。制备的ZnO纳米棒表现出优异的电催化活性。这使得能够产生可测量且稳定的输出电流。结果与H₂O₂的氧化过程相关，并显示出ZnO纳米棒非酶H₂O₂传感器具有良好的性能。
