A High Efficient Electrocatalytic Activity of Metal-organic Frameworks ZnO/Ag/ZIF-8 Nanocomposite for Electrochemical Detection of Toxic Heavy Metal Ions

Finly K. Arabbani, Dhanapal Vasu, Subramanian Sakthinathan, Te Wei Chiu, Ming Che Liu

研究成果: 雜誌貢獻文章同行評審

6 引文 斯高帕斯(Scopus)

摘要

A novel electrochemical sensor on ZIF-8 nanocomposites (Ag/ZnO/ZIF-8) was developed to analyze the mercury ions (Hg2+). The ZIF-8 materials are one of the 3-dimensional porous metal-organic frameworks with highly accessible pores and great surface area. The ZIF-8 nanocomposites were prepared through simple sol-gel methods and their physio-chemical properties were characterized via different analytical analyses. As a result of cyclic voltammetry, Ag/ZnO/ZIF-8 exhibited a better electrocatalytic behavior towards the detection of mercury ions (Hg2+). Furthermore, the composite modified electrode was then inspected as a sensor for DPV detection of mercury ions. The nanocomposite sensor performed a wide linear range from 0.5 μM to 140 μM with a low detection limit of 40 nM, and high sensitivity of 56.06 μA μM−1 cm−2. Moreover, the ZIF-8 composite sensor showed a higher selectivity toward the detection of mercury ions (Hg2+). The real-time applications of the ZIF-8 composites sensor were inspected in various samples with good sensitivity.
原文英語
文章編號e202200284
期刊Electroanalysis
35
發行號3
DOIs
出版狀態已發佈 - 3月 2023

ASJC Scopus subject areas

  • 分析化學
  • 電化學

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