Bimetallic zeolitic imidazolate frameworks-derived bar-shaped structure for electrochemical determination of H2O2

• Published in: Microchemical journal 2025-01, Vol.208, Article 112399
• Main Authors: Fan, Minghong, Gong, Zhiyu, Zheng, Jiayu, Zhou, Lu, Qi, Beibei, Liu, Tianzuo, Yang, Zhengfei
• Format: Article
• Language: English
• Subjects: Bar-shaped; Bimetallic zeolitic imidazolate frameworks derivatives; Electrochemical determination; Hydrogen peroxide
• ISSN: 0026-265X
• DOI: 10.1016/j.microc.2024.112399

[Display omitted] •Different bar-shaped derivatives were prepared by calcination of bimetallic ZIFs.•B-Co/Cu/Cs exhibits the optimum performance for H2O2 detection.•Good detection property comes from bar-like structure and Co-Cu. Unique nanostructures of bimetallic materials derived from zeolitic imidazolate frameworks (ZIFs) are promising candidates for electrochemical sensor applications. In this study, different bimetallic bar-shaped ZIFs (B-ZIFs) were synthesized by replacing some cobalt ions with different metals ions (Ni2+, Ce2+, Cu2+, Mn2+, or Fe3+). Then their derivatives were prepared via carbonization, respectively. Upon conducting thorough material characterizations and assessment of the electrochemical properties, the most suitable candidate for electrode modification was identified as bar-shaped Co/Cu-based carbon materials (B-Co/Cu/Cs). This choice facilitated the construction of an innovative electrochemical sensor tailored for the determination of H2O2. The furnished B-Co/Cu/Cs-based sensor showed good linearity for H2O2 analysis within concentrations ranged from 0.5-4000 μM and 4000–11000 μM, with a detection limit of 0.44 μM. All these results suggested that the prepared material would be a competitive candidate for the non-enzymatic H2O2 sensing.