Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey.
Sen Research Group, Department of Biochemistry, Faculty of Arts and Science, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey; Department of Material Science and Engineering, Faculty of Engineering, Dumlupınar University, Evliya Çelebi Campus, 43100 Kütahya, Turkey.
Anal Chim Acta. 2017 Oct 9;989:88-94. doi: 10.1016/j.aca.2017.07.051. Epub 2017 Jul 29.
Addressed herein, we report the synthesis and characterization of a tert-nonyl mercaptan (TNM) functionalized reduced graphene oxide (rGO) supported palladium (Pd) nanoparticles (NPs) (Pd/TNM@rGO) as electrochemical sensor. The highly monodisperse Pd/TNM@rGO nanocomposite was applied for electrochemical determination of hydrogen peroxide (HO) at a potential range of -0.6 to +0.8 V. The Pd/TNM@rGO sensor demonstrated very high activity, sensitivity, reusability and durability toward HO sensing. The well dispersed Pd/TNM@rGO nanocomposite has been characterized by using several analytical techniques such as, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS) and electrochemical impedance spectroscopy (EIS). The catalytic performance of prepared biosensor was also characterized by using cyclic voltammetry (CV) and chronoamperometry (CA) methods. The proposed HO biosensor showed a broad linear range up to 12 mM, and a very low detection limit of 0.0025 μM, with a quick response time of less than 10 s. Additionally, the biosensor exhibited great capability, reproducibility and durability for the examination of HO.
本文报道了一种叔壬基硫醇（TNM）功能化还原氧化石墨烯（rGO）负载钯（Pd）纳米粒子（NPs）（Pd/TNM@rGO）的合成与表征，将其作为电化学传感器。高度单分散的 Pd/TNM@rGO 纳米复合材料可在-0.6 至+0.8 V 的电位范围内用于电化学测定过氧化氢（HO）。Pd/TNM@rGO 传感器对 HO 传感具有非常高的活性、灵敏度、可重复性和耐用性。Pd/TNM@rGO 纳米复合材料的分散情况通过 X 射线光电子能谱（XPS）、透射电子显微镜（TEM）、电子能量损失光谱（EELS）和电化学阻抗谱（EIS）等多种分析技术进行了表征。还通过循环伏安法（CV）和计时安培法（CA）对制备的生物传感器的催化性能进行了表征。所提出的 HO 生物传感器具有很宽的线性范围，可达 12 mM，检测限非常低，为 0.0025 μM，响应时间小于 10 s。此外，该生物传感器在 HO 的检测方面表现出了出色的性能、重现性和耐用性。
