Leveraging crystal defect modulation of Zirconium nano-MOF for enhanced water vapour confinement and photocatalytic behaviours

Metal-organic frameworks (MOFs) have emerged as promising materials for various applications, including photocatalysis and moisture harvesting. This present study undertakes an analytical exploration of the impact of acid modulation on the structural and functional attributes of amine-functionalized UiO66 (UiO66NH ₂ ), focusing predominantly on improving its photocatalytic proficiency and efficiency in water vapor confinement. A crucial highlight of the study was the ideal crystallization of UiO66NH ₂ nanoparticles achieved with the use of 150 equivalents of acetic acid modulator. Empirical findings have shown more than a significant escalation in water vapor adsorption capabilities presented by these nanoparticles. The minimal hysteresis observed in the process underscores the potential these particles hold in being utilized fruitfully for moisture harvesting applications. In addition to these, the prepared MOF nanoparticles showcase exceptional performance in the degradation of Rhodamine B dye, primarily attributable to the optimal visible light bandgap and extraordinary stabilizing capacity of superoxide radicals. The results derived from this study accentuate the integral role acid modulation can play in specifically tailoring the properties of MOFs to suit dedicated applications. It provides a meaningful perspective and understanding that can guide the future design of advanced MOF-based materials.