College of Chemistry & Materials Science/Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education/Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Northwest University, Xi'an Shaanxi, 710069, China.
Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering/Research Center of Food Safety Risk Assessment and Control, College of Food Science and Technology, Northwest University, Xi'an, Shaanxi, 710069, China.
Anal Sci. 2021 Oct 10;37(10):1419-1426. doi: 10.2116/analsci.20P456. Epub 2021 Mar 26.
The non-enzymatic electrochemical sensing platform for hydrogen peroxide by using Pt-based nanoparticle was investigated. The characterization of PtNiCo-NPs was done by XRD, TEM, HRTEM, EDS, and XPS. A simple drop-casting technique was used to fabricate the nanomaterial on FTO electrode. The amperometric and cyclic voltammetric results illustrated that PtNiCo-NPs on FTO had excellent electrochemical performance over other mono or bimetallic materials. The catalytic performance for HO sensing based on PtNiCo-NPs possessed a wide linear range from 5 μM to 16.5 mM with a low detection limit of 0.37 μM and a good sensitivity of 1374.4 μA mM cm at a scan rate of 20 mV s (vs. Ag/AgCl). This work presents a new way to produce a ternary nanomaterial for HO sensing with excellent electrochemical performance. In addition, the fabricated nanomaterial showed no interferences for common interfering agents, which indicates the high specificity of the sensor. The PtNiCo-NPs have excellent stability and good reproducibility in real samples.
采用基于 Pt 的纳米粒子的无酶电化学传感平台来研究过氧化氢。通过 XRD、TEM、HRTEM、EDS 和 XPS 对 PtNiCo-NPs 进行了表征。采用简单的滴铸技术将纳米材料制备在 FTO 电极上。安培和循环伏安结果表明，与其他单金属或双金属材料相比，FTO 上的 PtNiCo-NPs 具有出色的电化学性能。基于 PtNiCo-NPs 的 HO 传感的催化性能具有从 5 μM 到 16.5 mM 的宽线性范围，检测限低至 0.37 μM，在扫描速率为 20 mV s（相对于 Ag/AgCl）时灵敏度为 1374.4 μA mM cm。这项工作为具有优异电化学性能的 HO 传感提供了一种生产三元纳米材料的新方法。此外，所制备的纳米材料对常见的干扰剂没有干扰，这表明传感器具有高特异性。PtNiCo-NPs 在实际样品中具有出色的稳定性和良好的重现性。
