Hg2+ Ions Sensor: Single Walled Carbon Nanotubes Incorporated Zn-Metal Organic Framework

IF 0.6 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Nanoelectronics and Optoelectronics Pub Date : 2023-09-01 DOI:10.1166/jno.2023.3494

Gajanan A. Bodkhe, Mayur S. More, Mohamed Hashem, Hassan Fouad, Subramanian Siva, Megha A. Deshmukh, Nikesh N. Ingle, Myunghee Kim, Mahendra D. Shirsat

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引用次数: 0

Abstract

In the present work, zinc benzene 1,4 dicarboxylate (ZnBDC) metal organic framework (MOF) and its composite with single-walled carbon nanotubes (SWNTs), we called as SWNTs@ZnBDC, has been synthesized by traditional solvothermal method. The synthesized materials have been evaluated with various techniques such as Fourier transform infrared spectroscopy, X-ray diffraction (XRD), thermogravimetric-differential thermal analysis, Brunauer–Emmett–Teller surface area analysis, cyclic voltammetry, and electrochemical impedance spectroscopy. The sensor has been fabricated by depositing SWNTs@ZnBDC MOF on a glassy carbon electrode (GCE). The SWNTs@ZnBDC/GCE electrode shows excellent sensing behaviour in terms of selectivity towards Hg2+ ions only at pH = 5 and does not show any sensing response towards Pb2+, Cr2+, Cd2+, Cu2+, and Ni2+ ions at a concentration of 1 μM. For the Hg2+ ions, the sensor shows a high sensitivity of 0.86 μA/nM with a limit of detection of 6.74 nM and a limit of quantification of 5 nM.

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Hg2+ 离子传感器：加入锌金属有机框架的单壁碳纳米管

本研究采用传统的溶热法合成了苯二甲酸锌（ZnBDC）金属有机框架（MOF）及其与单壁碳纳米管（SWNTs）的复合材料，我们称之为 SWNTs@ZnBDC。合成材料已通过多种技术进行了评估，如傅立叶变换红外光谱、X 射线衍射（XRD）、热重-差热分析、布鲁诺-艾美特-泰勒表面积分析、循环伏安法和电化学阻抗光谱。传感器是通过在玻璃碳电极（GCE）上沉积 SWNTs@ZnBDC MOF 制成的。SWNTs@ZnBDC/GCE 电极仅在 pH = 5 的条件下对 Hg2+ 离子具有极佳的选择性，而对浓度为 1 μM 的 Pb2+、Cr2+、Cd2+、Cu2+ 和 Ni2+ 离子则没有任何感应反应。对于 Hg2+ 离子，传感器显示出 0.86 μA/nM 的高灵敏度，检测限为 6.74 nM，定量限为 5 nM。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Nanoelectronics and Optoelectronics 工程技术-工程：电子与电气

自引率

16.70%

发文量

审稿时长

12.5 months