高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (1): 20210579.doi: 10.7503/cjcu20210579

• 研究论文 • 上一篇    下一篇

轮型多金属氧酸盐复合物膜的制备及在检测亚硝酸盐中的应用

初明月1,李峰博1,高宁1,杨昕2,于婷婷2,马慧媛1,杨桂欣1,庞海军1   

  1. 1.哈尔滨理工大学材料科学与化学工程学院, 哈尔滨 150040
    2.哈尔滨石油学院化工学院, 哈尔滨 150000
  • 收稿日期:2021-08-16 出版日期:2022-01-10 发布日期:2021-09-16
  • 基金资助:
    黑龙江省自然科学基金(LH2019B009)

Construction of a Coronal Polyoxometalate-based Composite Film for Determination of Nitrite

CHU Mingyue1, LI Fengbo1, GAO Ning1, YANG Xin2, YU Tingting2, MA Huiyuan1(), YANG Guixin1, PANG Haijun1   

  1. 1.School of Material Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150040,China
    2.School of Chemical Engineering,Harbin Institute of Petroleum,Harbin 150040,China
  • Received:2021-08-16 Online:2022-01-10 Published:2021-09-16
  • Contact: MA Huiyuan E-mail:mahy017@163.com
  • Supported by:
    the Natural Science Foundation of Heilongjiang Province, China(LH2019B009)

摘要:

利用自组装和电沉积交替的方法制备了基于磷钨酸盐K28Li5H7P8W48O184·92H2O(P8W48)、 碳纳米管和Ni纳米颗粒的复合膜电极, 用于NO2- 的检测. 由于复合膜中P8W48, CNTs和Ni纳米颗粒3种活性成分的协同作用, 所制备的传感器表现出低的检出限、 宽的线性范围和较高的选择性. 将该传感器用于检测果汁中的NO2- , 所得到的回收率在允许的误差范围内. 这种复合膜电极传感器有望在实际应用中高度灵敏地检测NO2- .

关键词: 多金属氧酸盐, 镍纳米粒子, 碳纳米管, 亚硝酸盐

Abstract:

A composite film based on a coronal phosphotungstate K28Li5H7P8W48O184·92H2O(P8W48), CNTs and Ni nanoparticles(Ni NPs) was successfully constructed on the glassy carbon electrode(GCE) by using layer-by-layer self-assembly in conjunction with electrodeposition for determination of NO2- . The conductivity and detection signal of NO2- of the composite film were greatly increased due to the synergistic effect of the three active components, P8W48, CNTs and Ni NPs in composite film. Under the optimized conditions, the as-prepared sensor exhibited impressive sensing performance with a widely linear range from 1.25 μmol/L to 2500 μmol/L and a low detection limit(LOD) of 0.02 μmol/L. The good selectivity was confirmd in presence of several possible co-existing substances. The applica-bility of the method was investigated by determination of NO2- in fruit juice with a satisfied recovery. This composite sensor is promising for highly sensitive determination of NO2- in real application.

Key words: Polyoxometalate, Nickel nanoparticles, Carbon nanotubes, Nitrite

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