Adsorption of Nitrogen on Mn(II) Metal-organic Framework Nanoparticles

Abstract

Adsorption of N2 on mixed ligand benzoic acid and 1, 10-phenanthroline ligands of Mn(II) metal-organic framework (MOF)–nanoparticles were demonstrated. The adsorption capacity and pore size distribution of the synthesized MOF were conducted experimentally by measuring the N2 adsorption isotherm at 77.3 K. The resulting data were fitted to Brunauer-Emmett-Teller (BET), de Boer, Dubinin-Redusbkevich (DR), Banet-Joyner-Halenda (BJH), Horvath-Kawazoe (HK) and Density Functional Theory (DFT) models to describe the adsorptive behaviour of the synthesized nanoparticles. The DSC analysis shows the high chemical stability of this compound. The FT-IR measurement reports present the abundant of highly coordinated functional groups. And the adsorption properties evaluated by different adsorption models compared with existing adsorbent materials suggest Mn-MOF with good thermal stability, high surface area and pore openings, is a promising material for storing gases and energy because at low or high pressures, it can adsorb nitrogen gas due to its large openings.