石墨烯
微分脉冲伏安法
循环伏安法
X射线光电子能谱
纳米复合材料
材料科学
检出限
电化学气体传感器
电化学
氧化物
钯
核化学
电极
化学工程
纳米技术
化学
催化作用
色谱法
有机化学
物理化学
冶金
工程类
作者
Wenwen Yi,Zhongping Li,Chuan Dong,Hung‐Wing Li,Junfen Li
标识
DOI:10.1016/j.microc.2019.05.049
摘要
In this work, we developed a highly selective detection of chloramphenicol (CAP) using palladium nanoparticles decorated graphene oxide (rGO/PdNPs) nanocomposite. Moreover, the successful formation of rGO/PdNPs nanocomposite was verified by TEM, UV–Vis, FT-IR spectra, X-ray photoelectron spectroscopy (XPS). The electrochemical characteristics of the electrochemical sensor were evaluated by differential pulse voltammetry (DPV) and cyclic voltammetry (CV). Furthermore, the rGO/PdNPs modified GCE displayed an excellent electroactivity in the presence of chloramphenicol as compared to that of modified and unmodified glassy carbon electrode (GCE). It showed an excellent performance with a linear response range of 50–1000 nM and the low detection limit of 50 nM (S/N = 3). In addition, the present promising sensor exhibited high sensitivity, good stability as well as remarkable reproducibility, and satisfactory recovery rate for CAP electrochemical detection in real samples.
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