Synergistic Hydrogen Production from Formic Acid via Ultra-Small Palladium Nanoparticles Stabilized on Diamine-Modified Cr-MIL-۱۰۱

The development of efficient catalysts for hydrogen generation from formic acid is crucial for advancing clean energy technologies. In this study, we present the synthesis of ultra-small palladium nanoparticles stabilized on diamine-functionalized Cr-MIL-۱۰۱ metal-organic frameworks (MOFs). The tailored surface environment of these MOFs facilitates the formation of electron-rich palladium (Pd) active sites, which significantly enhances the catalytic dehydrogenation of formic acid under mild conditions. The incorporation of diamine groups into the structure improves the dispersion and stability of the nanoparticles, effectively preventing aggregation and maintaining a high surface area. As a result, the catalyst demonstrates exceptional activity and long-term stability, surpassing the performance of conventional Pd-based systems. Mechanistic investigations indicate that the synergistic interaction between palladium and the diamine-modified support plays a crucial role in promoting selective hydrogen release. This is achieved by tuning the electronic structure of the active sites, which further enhances the catalyst's performance.

کلیدواژه ها:

Hydrogen generation ، Palladium nanoparticles ، Diamine-functionalized Cr-MIL-۱۰۱