From MOF-199 Microrods to CuO Nanoparticles for Room-Temperature Desulfurization: Regeneration and Repurposing Spent Adsorbents as Sustainable Approaches.

ABSTRACT: MOF-199 is one of the well-studied metal-organic frameworks (MOFs) for the capture of small gas molecules. In this study, we have investigated the thermal transformation of MOF-199 microrods to CuO nanoparticles by various microscopic and spectroscopic techniques. The growth of oxide was initiated by the formation of ∼2.5 nm particles at 200 °C, which ended up as CuO nanoparticles of ∼100-250 nm size at 550 °C. An intermediate presence of Cu₂O along with CuO was recorded at 280 °C. The MOF and calcined products were tested for the room-temperature desulfurization process. MOF-199 showed the maximum adsorption capacity for H₂S gas (77.1 mg g^-1) among all adsorbents studied. Also, MOF-199 showed a better regeneration efficiency than the derived oxide. For a s

SUBMITTER: Gupta NK 

PROVIDER: S-EPMC8495871 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature