High-Efficiency Nitrite Sensor Based on CoP Nanowire Array

Authors

Fu-ling ZHOU, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China,Chengdu 610054, Sichuan, China;College of Chemistry and Material Science, Sichuan Normal University,Chengdu 610068, Sichuan, China;
Xiao-li XIONG, College of Chemistry and Material Science, Sichuan Normal University,Chengdu 610068, Sichuan, China;Follow
Xu-ping SUN, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China,Chengdu 610054, Sichuan, China;Follow

Corresponding Author

Xiao-li XIONG(xiongxiaoli2000@163.com);
Xu-ping SUN(xpsun@uestc.edu.cn)

Abstract

Nitrite has a negative impact on the environment and human health. The long-term consumption of nitrite-containing foods has a carcinogenic risk. Therefore, the analysis and detection of nitrite are important. It is of great significance to develop high-efficiency electrocatalysts to achieve high sensitivity and selectivity for nitrite detection. The cobalt phosphide nano-array (CoP/TM) was obtained by hydrothermal and low-temperature phosphating. The electrochemical test results show that the constructed CoP/TM was a highly efficient electrochemical reduction nitrite catalyst with the excellent sensing performance and response time less than 3 s, as well as the linear detection range of 1.0 μmol·L^-1 to 1.0 mmol·L^-1 and lower detection limit of 18 nmol·L^-1 (S/N = 3). The response sensitivity was 17718 μA·(mmol·L^-1)-1·cm^-2 with the satisfactory selectivity.

Graphical Abstract

Keywords

CoP, nanoarray, nitrite, electrochemical, sensor

DOI Link

https://doi.org/10.13208/j.electrochem.181055

Publication Date

2019-04-28

Online Available Date

2019-01-29

Revised Date

2019-01-26

Received Date

2019-01-02

Recommended Citation

Fu-ling ZHOU, Xiao-li XIONG, Xu-ping SUN. High-Efficiency Nitrite Sensor Based on CoP Nanowire Array[J]. Journal of Electrochemistry, 2019 , 25(2): 252-259.
DOI: 10.13208/j.electrochem.181055
Available at: https://jelectrochem.xmu.edu.cn/journal/vol25/iss2/10

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