Gas-solid two-phase flow (GSF) mechanochemical synthesis of dual-metal-organic frameworks and research on electrochemical properties

As an alternative approach for conventional mechanochemical synthesis, a novel gas-solid two-phase flow (GSF) synthetic technique for the mechanochemical synthesis of dual metal-organic frameworks (DMOFs) was reported for the first time. The prepared CoMn2(BTC)(2) was characterized by FT-IR, DTA, TG/DTG, and XRD studies. The results indicated that CoMn2(BTC)(2) (BTC = 1,3,5-benzenetricarboxylate) was successfully synthesized after 10 min at a rate of 60 kg h(-1). CoMn2O4 microspheres were also prepared via the CoMn2(BTC)(2) precursor method and characterized using FT-IR, XPS, XRD, SEM, EDS, and BET methods. The electrochemical properties of the as-prepared CoMn2O4 were investigated, and the GSF results showed that the microsphere electrodes of CoMn2O4 had a high specific capacitance (969 F g(-1)) at a current density of 1 A g(-1) in 3 M aqueous KOH solution.