A hydrogen peroxide sensor based on TNM functionalized reduced graphene oxide grafted with highly monodisperse Pd nanoparticles
A hydrogen peroxide sensor based on TNM functionalized reduced graphene oxide grafted with highly monodisperse Pd nanoparticles
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DOI：
10.1016/j.aca.2017.07.051
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发表时间：
2017-10-09
影响因子：
6.2
通讯作者：
Sen, Fatih
中科院分区：
文献类型：
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作者：
Bozkurt, Sait;Tosun, Berna;Sen, Fatih
在本论文中，我们报道了一种由叔-壬基硫醇(TNM)功能化的还原氧化石墨烯(RGO)负载的钯(Pd)纳米粒子(Pd/TNM@rGO)作为电化学传感器的合成和表征。将高度单分散的Pd/TnM@rGO纳米复合材料应用于-0.6~+0.8V的H_2O_2电化学检测。Pd/Tm_m@rGO传感器对H_2O_2的传感具有很高的活性、灵敏度、可重用性和耐用性。利用X射线光电子能谱(XPS)、透射电子显微镜(TEM)、电子能量损失谱(EELS)和电化学阻抗谱(EIS)等分析技术对Pd/TnM@rGO纳米复合材料进行了表征。用循环伏安法(CV)和计时电流法(CA)对制备的生物传感器的催化性能进行了表征。该传感器的线性范围宽至12 mm，检测下限为0.0025 mm，快速响应时间小于10 S，对过氧化氢的检测具有良好的性能、重复性和耐用性。(C)2017爱思唯尔B.V.保留所有权利。
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 (H2O2) 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 H2O2 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 H2O2 biosensor showed a broad linear range up to 12 mM, and a very low detection limit of 0.0025 mM, with a quick response time of less than 10 s. Additionally, the biosensor exhibited great capability, reproducibility and durability for the examination of H2O2. (C) 2017 Elsevier B.V. All rights reserved.