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Abstract Metal–organic frameworks (MOFs), characterized by strong bonds between organic ligands and metal ions, exhibit high porosity, large surface area, and exceptional chemical stability when carefully designed. In this study, a novel MOF comprising lead ions and ligands derived from 2-carboxybenzaldehyde and 4-aminobenzoic acid was synthesized using a sonochemical approach. This innovative method enabled the rapid formation of highly porous crystals with a BET surface area of 1181.45 m 2 g 1 and a total pore volume of 2.27 cm 3 g −1 at P/P₀ = 0.3023. Comprehensive characterization techniques, including thermal analysis, SEM, EDX, PXRD, and FT-IR, confirmed the successful formation of the MOF structure. The synthesized MOF was utilized to fabricate an enhanced Ni-MOF electrode, demonstrating superior electrochemical performance for capacitor applications. The electrode achieved a specific capacitance of 402 F g −1 at 1 mA cm −2 and maintained excellent cycling stability, with 87.9% capacitance retention over 4000 cycles at 5 A g −1 . These results underline the potential of the synthesized MOF in advancing energy storage technologies, particularly in developing high-performance and durable electrochemical capacitors.
Eliwa et al. (Wed,) studied this question.