Preparation And Catalytic Properties Of Zn/Co-ZIF And Mo(C,N,P)NPs

In recent years,because they have developed void structure and easy modulation of the physical and chemical properties,metal organic framework compounds(MOFs)have become hot spot in the fields of materials and are widely used in catalysis,adsorption and separation and nonlinear optics.Using MOFs as the carriers to solve the problem of the activity,selectivity and stability of traditional noble metal catalysts and developing highly efficient and stable catalyst systems become a rising star.Due to the controllable morphology,structural diversity,good thermal stability and excellent gas adsorption properties,MOFs have brought new opportunities to the field of nano-catalysis.Through established in methanol solvent system,we have successfully synthesized ZIF-8 and ZIF-67 with the rules of rhombic dodecahedron.The high degree of crystallinity and uniform monodisperse particles have been got without adding any surface active agent and coordination agent.The hollow Zn/Co-ZIF particles have been received using the core-shell structure as precursors under solvothermal and phase transition process.Then,the well dispersed Pd nanoparticles are loaded on the Zn/Co-ZIF to be used as catalysts in carbon monoxide oxidation and selective hydrogenation of acetylene.In the oxidation of carbon monoxide,the hollow Zn/Co-ZIF structure shows a lower oxidation temperature than the solid structure.Also,the hollow Zn/Co-ZIF structure shows very high conversion and selectivity in acetylene hydrogenation.Through the establishment of UIO-66 and Mo O3 system,the regular octahedral molybdenum oxide have been synthesized using a simple vapor phase deposition method in tube furnace.Then using this material as precursor,a series of Mo-compounds have been synthesized.Then the materials are used in the acid condition for HER test.Through the test,MoP shows very high electrochemical activity.