氧化石墨烯-钯纳米颗粒修饰玻碳电极对肼和羟胺的电催化氧化
Electrocatalytic oxidation of hydrazine and hydroxylamine by graphene oxide-Pd nanoparticle-modified glassy carbon electrode.
作者信息
Lee Eunhee, Kim Daekun, You Jung-Min, Kim Seul Ki, Yun Mira, Jeon Seungwon
机构信息
Department of Chemistry, Institute of Basic Science, Chonnam National University, 300 Yongbong-Dong, Bukgu, Gwangju 500-757, Korea.
出版信息
J Nanosci Nanotechnol. 2012 Dec;12(12):8886-92. doi: 10.1166/jnn.2012.6792.
Pd nanoparticle catalysts supported by thiolated graphene oxide (tGO) on a glassy carbon electrode (GCE), and denoted as tGO-Pd/GCE, are used in this study for the electrochemical determination of hydroxylamine and hydrazine. The physicochemical properties of tGO-Pd were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). They showed strong catalytic activity toward the oxidation of hydroxylamine and hydrazine. Cyclic voltammetry (CV) and amperometry were used to characterize the sensors' performances. The detection limits of hydroxylamine and hydrazine by tGO-Pd/GCE were 0.31 and 0.25 microM (s/n = 3), respectively. The sensors' sensitivity, selectivity, and stability were also investigated.
本研究采用玻碳电极（GCE）上由硫醇化氧化石墨烯（tGO）负载的钯纳米颗粒催化剂（记为tGO-Pd/GCE）对羟胺和肼进行电化学测定。通过透射电子显微镜（TEM）、X射线光电子能谱（XPS）和电化学阻抗谱（EIS）对tGO-Pd的物理化学性质进行了表征。它们对羟胺和肼的氧化表现出很强的催化活性。采用循环伏安法（CV）和安培法对传感器性能进行了表征。tGO-Pd/GCE对羟胺和肼的检测限分别为0.31和0.25微摩尔（s/n = 3）。还研究了传感器的灵敏度、选择性和稳定性。
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