Rapid ultrasound-assisted synthesis of controllable Zn/Co-based zeolitic imidazolate framework nanoparticles for heterogeneous catalysis

While metal-organic frameworks (MOFs) exhibit excellent potential in extensive catalytic reactions, predictably synthesizing MOF nanoparticles (NPs) with desired and uniform sizes remains a great challenge. Here, mild efficient ultrasound-assisted synthetic method has been developed to prepare ZIF-8, ZIF-67, Co/ZIF-8 well-designed particle size morphology. By adjusting the cobalt content doped into heterometallic ZIF-8 structure, tunable ranging from 35 nm over 300 have achieved, resulting differences nucleation growth rates of zinc ZIFs. Impressively, this as-obtained bimetallic Zn/Co-ZIF shows hierarchical porous structure modified physicochemical properties, leading change nitrogen adsorption-desorption characteristics. In addition, when used as heterogenous catalyst, Co-doped is demonstrated both enhanced performance for activation peroxymonosulfate (PMS) organic dye degradation compared pure well superior structural stability, monometallic ZIF-67. This work provides novel strategy predictable design controlled fabrication nanostructures structures compositions.