煅烧
材料科学
纳米颗粒
电化学
电极
热液循环
多孔性
碳纤维
化学工程
检出限
纳米技术
选择性
兴奋剂
电化学气体传感器
线性范围
化学
色谱法
催化作用
复合数
复合材料
光电子学
有机化学
物理化学
工程类
作者
Qiumin Ye,Xiaohui Chen,Jing Yang,Datong Wu,Jianfeng Ma,Yong Kong
标识
DOI:10.1016/j.foodchem.2019.02.108
摘要
In this study, a sensitive and selective electrochemical sensing platform for the detection of Sudan I was developed with CuO nanoparticles-decorated 3D N-doped porous carbon (CuO/3DNPC). 3D N-doped porous carbon (3DNPC) was first prepared by calcining the precursors of 3D integrated polysaccharides, and then it was decorated with CuO nanoparticles by hydrothermal method. The CuO/3DNPC modified electrode showed high sensitivity and wide linear range for the detection of Sudan I due to the excellent electrocatalytic activity of CuO and the accelerated electron transfer by 3DNPC. In addition, the proposed CuO/3DNPC also exhibited high selectivity, high reproducibility and stability in the detection of Sudan I. Finally, the CuO/3DNPC based Sudan I sensor was applied in the detection of Sudan I in ketchup and chilli sauces, and the results demonstrated the potential of the developed CuO/3DNPC as a promising electrode material for accurate assay of Sudan I in food samples.
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