Synthesis and Environmental Stability Analysis of Cu_nCo_1-n-MOF-74 with Different Doping Ratios of Metal Ions

Fangshi Liu

MOF-74; EDS; Synthesis; Environmental stability.

Metal-organic framework materials MOFs are porous crystalline materials with periodic framework structures composed of metal or metal oxide clusters and organic ligands, which are widely used in catalysis, energy storage (and separation). MOF-74 materials have a high density of potentially open metal sites in the backbone that can replace metal nodes without disrupting the basic backbone structure of MOF crystals, which makes the design of stable bimetallic/polymetallic MOF topologies are promising. The addition of two or more metal ions can add different metal properties to achieve more complex multiple catalysis, and it is important to develop and prepare new bimetallic MOFs materials. In this paper, five Cu_nCo_1-n-MOF-74 materials were successfully synthesized by a more stable classical solvothermal method using Cu²⁺ and Co²⁺ as bimetallic central ions and adjusting the doping ratio of Co²⁺ to Cu²⁺ in MOF-74 materials by controlling the ratio of metal raw materials. The five synthesized materials were characterized by XRD, IR, and RAMAN, and the metal distribution on the surface of the materials was observed by using EDS energy spectrometry instrument. Their environmental stability was also analyzed by ICP.

https://doi.org/10.31871/IJNTR.9.5.11