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 2 @CN) through controlled pyrolysis. The resulting D-ZrO 2 @CN possesses a large active surface area and enhanced hydrophilicity, contributing to its remarkable electrocatalytic performance for luteolin (Lut) detection. The fabricated D-ZrO 2 @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.
Yang et al. (Thu,) studied this question.