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<p>An electrochemical sensor based on Cu<sub>3</sub>(BTC)<sub>2</sub> MOF-fabricated screen-printed carbon electrode (SPCE) was employed for Cd(II) detection. The Cu<sub>3</sub>(BTC)<sub>2</sub> was synthesized via a straightforward solvothermal approach and characterized by XRD, FT-IR, TGA, and FE-SEM. The XRD of the synthesized Cu<sub>3</sub>(BTC)<sub>2</sub> was in good agreement with the existing Cu<sub>3</sub>(BTC)<sub>2</sub> (CCDC 112954). The FT-IR results revealed the absorption bands at 1368–1446&#xa0;cm<sup>−1</sup> and 1554–1640&#xa0;cm<sup>−1</sup> which may be ascribed to the bridged bidentate coordination of carboxylate groups in Cu<sub>3</sub>(BTC)<sub>2</sub> MOF. The Cu<sub>3</sub>(BTC)<sub>2</sub>-modified electrode offers the facile electron transfer and greater electrochemical surface area compared to the bare electrode. The recovery of Cd(II) ranged from 102.68 to 115.36%, which proves the practical applicability of the Cu<sub>3</sub>(BTC)<sub>2</sub>/SPCE electrode.</p>

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Cu3(BTC)2 MOF unlocks new potential for cadmium electrochemical sensing

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Nur Syamimi Zainudin,
  • Fathin Najihah Mohd Nazali,
  • Hong Ngee Lim,
  • Izwaharyanie Ibrahim,
  • Muhammad Asri Abdul Sisak

摘要

An electrochemical sensor based on Cu3(BTC)2 MOF-fabricated screen-printed carbon electrode (SPCE) was employed for Cd(II) detection. The Cu3(BTC)2 was synthesized via a straightforward solvothermal approach and characterized by XRD, FT-IR, TGA, and FE-SEM. The XRD of the synthesized Cu3(BTC)2 was in good agreement with the existing Cu3(BTC)2 (CCDC 112954). The FT-IR results revealed the absorption bands at 1368–1446 cm−1 and 1554–1640 cm−1 which may be ascribed to the bridged bidentate coordination of carboxylate groups in Cu3(BTC)2 MOF. The Cu3(BTC)2-modified electrode offers the facile electron transfer and greater electrochemical surface area compared to the bare electrode. The recovery of Cd(II) ranged from 102.68 to 115.36%, which proves the practical applicability of the Cu3(BTC)2/SPCE electrode.