Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
Research Institute & Department of Chemistry, SRM University, Kattankulathur 603 203, Tamil Nadu, India.
Biosens Bioelectron. 2017 Jan 15;87:1020-1028. doi: 10.1016/j.bios.2016.09.045. Epub 2016 Sep 14.
A sensitive and novel electrochemical sensor was developed for the detection of hydrogen peroxide (HO) using a reduced graphene oxide-nafion@silver6 (rGO-Nf@Ag6) nanohybrid modified glassy carbon electrode (GC/rGO-Nf@Ag6). The GC/rGO-Nf@Ag6 electrode exhibited an excellent electrochemical sensing ability for determining HO with high sensitivity and selectivity. The detection limit of the electrochemical sensor using the GC/rGO-Nf@Ag6 electrode for HO determination was calculated to be 5.35×10M with sensitivity of 0.4508µAµM. The coupling between rGO-Nf with silver nanoparticles (AgNPs) significantly boosted the electroanalytical performance by providing more active area for analyte interaction, thereby allowing more rapid interfacial electron transfer process. The interfering effect on the current response of HO was studied and the results revealed that the sensor electrode exhibited an excellent immunity from most common interferents. The proposed non-enzymatic electrochemical sensor was used for determining HO in apple juice, and the sensor electrode provided satisfactory results with reliable recovery values. These studies revealed that the novel GC/rGO-Nf@Ag6 sensor electrode could be a potential candidate for the detection of HO.
一种灵敏且新颖的电化学传感器，使用还原氧化石墨烯-纳滤@银 6（rGO-Nf@Ag6）纳米杂化修饰玻碳电极（GC/rGO-Nf@Ag6），用于检测过氧化氢（HO）。GC/rGO-Nf@Ag6 电极对 HO 的测定具有出色的电化学传感能力，具有高灵敏度和选择性。使用 GC/rGO-Nf@Ag6 电极的电化学传感器对 HO 测定的检测限计算为 5.35×10M，灵敏度为 0.4508µAµM。rGO-Nf 与银纳米粒子（AgNPs）的结合通过为分析物相互作用提供更多的活性面积，从而允许更快的界面电子转移过程，显著提高了电分析性能。研究了对 HO 电流响应的干扰影响，结果表明传感器电极对大多数常见干扰物具有出色的抗干扰能力。该非酶电化学传感器用于测定苹果汁中的 HO，传感器电极提供了令人满意的结果，具有可靠的回收率值。这些研究表明，新型 GC/rGO-Nf@Ag6 传感器电极可能是检测 HO 的潜在候选者。
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