Laser-Induced Metal–Organic Framework-Derived Flexible Electrodes for Electrochemical Sensing

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(2), P. 3772 - 3784

Published: Jan. 6, 2025

The successful development of a metal–organic framework (MOF)-derived Co/Co3O4/C core–shell composite integrated into laser-induced graphitic (LIG) carbon electrodes for electrochemical sensing is reported. sensors are fabricated via direct laser scribing technique using UV (355 nm wavelength) to induce the photothermolysis rationally selected ZIF-67 LIG matrix. Electrochemical characterization reveals that incorporation laser-scribed ZIF-67-derived on electrode surface reduces impedance more than 100 times compared with bare sensors. Comprehensive morphological, structural, and chemical analyses confirm formation porous from irradiation polyimide, while LIG+ZIF-67-derived composites feature size-controlled uniformly distributed Co/Co3O4 core/shell nanoparticles (NPs) in semihollow wasp-nest-like matrix photothermal decomposition ZIF-67, embedded within area. high area porosity this nitrogen-rich facilitate charge transfer processes, whereas NPs offer accessible active sites, making these composite-based promising materials applications requiring injection capability low electrode/electrolyte interface impedance. PI+Z67L sensor exhibited 400 higher specific capacitance (2.4 mF cm–2) PIL (6 μF cm–2). This approach enables rapid cost-effective fabrication high-performance enhanced by integration tailored MOF-derived composites.

Language: Английский

Recent development in wearable sensors for healthcare applications

Nano-Structures & Nano-Objects, Journal Year: 2025, Volume and Issue: 42, P. 101473 - 101473

Published: April 3, 2025

Language: Английский