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电化学(中英文) ›› 2019, Vol. 25 ›› Issue (2): 252-259.  doi: 10.13208/j.electrochem.181055

• 研究论文 • 上一篇    下一篇

基于CoP纳米阵列的亚硝酸根传感器的研究

周福玲1,2,熊小莉2*,孙旭平1*   

  1. 1. 电子科技大学基础与前沿研究院, 四川 成都 610054; 2. 四川师范大学化学与材料科学学院, 四川 成都 610068
  • 收稿日期:2019-01-02 修回日期:2019-01-26 出版日期:2019-04-28 发布日期:2019-01-29
  • 通讯作者: 熊小莉,孙旭平 E-mail: xiongxiaoli2000@163.com; xpsun@uestc.edu.cn
  • 基金资助:
    国家自然科学基金项目(No. 21575137)资助

High-Efficiency Nitrite Sensor Based on CoP Nanowire Array

ZHOU Fu-ling1,2, XIONG Xiao-li2*, SUN Xu-ping1*   

  1. 1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China,Chengdu 610054, Sichuan, China; 2. College of Chemistry and Material Science, Sichuan Normal University,Chengdu 610068, Sichuan, China
  • Received:2019-01-02 Revised:2019-01-26 Published:2019-04-28 Online:2019-01-29
  • Contact: XIONG Xiao-li, SUN Xu-ping E-mail: xiongxiaoli2000@163.com; xpsun@uestc.edu.cn

摘要: 亚硝酸盐对环境和人体健康有着不利的影响,人体长期食用含大量亚硝酸盐的食物有致癌的风险,对亚硝酸盐的分析和检测是非常重要的. 开发高效的电催化剂,从而实现高灵敏度和高选择性的亚硝酸盐检测具有十分重要的意义. 作者通过先水热再低温磷化获得了磷化钴纳米阵列(CoP/TM).电化学测试结果表明,所构建的CoP/TM电极对亚硝酸盐的还原具有高效的催化作用,线性检测范围为1.0 μmol·L-1到1.0 mmol·L-1,检测下限为18 nmol·L-1(S/N=3),响应灵敏度为17781 μA·(mmol·L-1)-1·cm-2,响应时间小于3 s,选择性良好.

关键词: 磷化钴, 纳米阵列, 亚硝酸钠, 电化学, 传感器

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.

Key words: CoP, nanoarray, nitrite, electrochemical, sensor

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