Efficient air epoxidation of cycloalkenes over bimetal-organic framework ZnCo-MOF materials

Three-Dimensional ZnCo-MOF Modified Graphene Sponge: Flexible Electrode Material for Symmetric Supercapacitor

“…However, at higher current density, the effective interaction between the electrolyte ions and the active sites of the electrode decreased, leading to a lower specific capacitance value, which demonstrated that probably electrochemical diffusion is the dominant process for the mechanism of the energy storage system. 35,38 The specific capacitances for the ZnCo-MOF/GS electrode are 695, 562, 477, 328, 219, and 117 F/g at 1, 2, 4, 6, 8, and 10 A/g, respectively, which are much higher than those of GS (392, 306, 249, 156, 67.2, and 21.5 F/g). The variation of the specific capacitances of both GS and ZnCo-MOF/GS electrodes versus current density is shown in Figure 5e.…”

“…In recent years, metal–organic frameworks (MOFs) have been promising candidates for SC electrodes due to their much more porous structures, extremely high specific surface areas, tunable chemical structures, and potential pseudocapacitive redox centers, and their adaptability to mesoporous and nanoporous materials. ,, MOFs are structured crystals formed by the combination of metals or metal clusters with organic ligands. MOFs of different sizes and crystal structures can be obtained depending on the chemical structures, amounts, reaction temperature, and time of the metal and organic ligand used. − Due to possessing chemical affinity, flexible surface functions, ultrahigh surface areas, and stability, MOFs are being investigated in applications of gas storage and separation, optoelectronic materials, sensing, drug transport, catalysis, , and SCs. , The designs of FASCs have increased rapidly with the use of MOF-based materials exhibiting EDLC mechanisms.…”

“…In recent years, metal−organic frameworks (MOFs) have been promising candidates for SC electrodes due to their much more porous structures, extremely high specific surface areas, tunable chemical structures, and potential pseudocapacitive redox centers, and their adaptability to mesoporous and nanoporous materials. 20,37,38 MOFs are structured crystals formed by the combination of metals or metal clusters with organic ligands. MOFs of different sizes and crystal structures can be obtained depending on the chemical structures, amounts, reaction temperature, and time of the metal and organic ligand used.…”

Microwave-Assisted Air Epoxidation of Mixed Biolefins over a Spherical Bimetal ZnCo-MOF Catalyst

“…First, Zn 0.1 Co 1 -MOF interacted with DMF and molecular oxygen; then, DMF and molecular oxygen were adsorbed onto the surface of Zn 0.1 Co 1 -MOF. Then, through the bimetallic synergistic activation of molecular oxygen, an active peroxy intermediate was formed (step I b ), accompanied by Co 2+ being oxidized to Co 3+ . − At the same time, under the promotion of microwaves, the electrons in the HOMO orbital of α-pinene were transferred to the LUMO orbital of styrene through the surface of the Zn 0.1 Co 1 -MOF catalyst (as shown in Scheme ) to form an α-pinene cation, and styrene received an electron to form a styrene anion (step I a ). In steps II a and II b , the α-pinene cation and the styrene anion interacted with the peroxy intermediate species and coordinated to form a cyclic intermediate species .…”

High performance of visible-light driven hydrogen production over graphdiyne (g-CnH2n−2)/MOF S-scheme heterojunction

“…ZnCo-ZIF with a dodecahedral structure was prepared by a room-temperature chemical method, based on previous reports. [50][51][52] Briefly, 3.24 g of 2-methylimidazole as a precursor was dissolved in 200 mL of methanol, and uniformly dispersed by ultrasound treatment. Zn(NO 3 ) 2 •6H 2 O (1.45 g) and Co(NO 3 ) 2 •6H 2 O (1.45 g) were dissolved in 200 mL of methanol uniformly by ultrasonication.…”