1. Fabrication of CuO nanoparticles-decorated 3D N-doped porous carbon as electrochemical sensing platform for the detection of Sudan I.
- Author
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Ye, Qiumin, Chen, Xiaohui, Yang, Jing, Wu, Datong, Ma, Jianfeng, and Kong, Yong
- Subjects
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METAL nanoparticles , *CARBON - Abstract
Highlights • 3DNPC is facilely prepared by using integrated NaCMC and CS as the precursors. • 3DNPC is decorated with CuO nanoparticles by hydrothermal method and calcination. • 3D porous network structure of NaCMC-CS is well maintained in the resultant 3DNPC. • The sensor shows high reproducibility, stability and good anti-interference ability. • The sensor is successfully applied in the determination of Sudan I in food samples. Abstract 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. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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