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<p>A surfactant-assisted dual-template strategy combined with ice-templating is presented to fabricate UiO-66 nanosheets, which are subsequently converted into a hierarchically porous carbon-based material (D-ZrO<sub>2</sub>@CN) through controlled pyrolysis. The resulting D-ZrO<sub>2</sub>@CN possesses a large active surface area and enhanced hydrophilicity, contributing to its remarkable electrocatalytic performance for luteolin (Lut) detection. The fabricated D-ZrO<sub>2</sub>@CN-based sensor achieves an ultralow detection limit of 0.076 nM (S/<i>N</i> = 3) and a wide linear range covering five orders of magnitude (0.1 nM to 2.0 µM), along with excellent anti-interference ability in complex matrices. This work not only provides a sensitive platform for Lut detection but also introduces a generalizable approach for constructing 2D MOF-derived carbon materials, demonstrating great potential for advanced electrochemical sensing applications.</p> Graphical abstract <p></p>

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Dual-template engineered 2D UiO-66-derived carbon nanosheets toward ultrasensitive electrochemical sensing of luteolin

  • 期刊论文

  • 发表日期：

    2026年2月12日

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  • Yaqi Yang,
  • Zhewei Zhang,
  • Jiaxu Zhang,
  • Jiamin Xiao,
  • Wei Wan,
  • Xin Yang,
  • Li Zhang,
  • Zijian Zhao

摘要

A surfactant-assisted dual-template strategy combined with ice-templating is presented to fabricate UiO-66 nanosheets, which are subsequently converted into a hierarchically porous carbon-based material (D-ZrO2@CN) through controlled pyrolysis. The resulting D-ZrO2@CN possesses a large active surface area and enhanced hydrophilicity, contributing to its remarkable electrocatalytic performance for luteolin (Lut) detection. The fabricated D-ZrO2@CN-based sensor achieves an ultralow detection limit of 0.076 nM (S/N = 3) and a wide linear range covering five orders of magnitude (0.1 nM to 2.0 µM), along with excellent anti-interference ability in complex matrices. This work not only provides a sensitive platform for Lut detection but also introduces a generalizable approach for constructing 2D MOF-derived carbon materials, demonstrating great potential for advanced electrochemical sensing applications.

Graphical abstract