Synthesis,Characterization And Application Of Inorganic-organic Hybrid And Nano Crystalline Materials

The rich nitrogen heterocyclic ligands have attracted much attention because they contain N,O two functional groups,multiple coordination sites,multiple coordination bonds and coordination modes.In this work,five metal-organic crystalline hybrid materials(1-5)were synthesized based a nitrogen heterocyclic organic ligand containing a carboxyl group,5-methyl-1-(4-carboxyphenyl)-1H-1,2,3-triazole-4-carboxylic acid(H₂L₁),and five transition metal salts.In this paper,three metal-organic crystalline hybrid materials(6-8)have been synthesized based a nitrogen heterocyclic organic ligand containing a carboxyl group,2,6-bis(2-pyrazinyl)pyridine-4-p-benzoic acid(HL₂),and three transition metal salts.The materials 1-8 are characterized by elemental analysis,IR spectroscopy,UV-vis spectroscopy,PXRD analysis,thermogravimetry and single-crystal X-ray diffraction.The interaction between 1-5 and xanthine fluorescence properties and their possible reasons are studied.The photocatalytic degradation properties of 6-8 for methylene blue(MB),methyl violet(MV)and rose-bengal(RB)and the possible reasons are discussed.The orthogonal structure of AgGa Se₂ ternary nanocrystals have been obtained by simple colloidal chemical synthesis using silver nitrate,gallium stearate and oleylamine-selenium(OAm-Se)as precursors.The AgGa(S_1-xSe_x)₂ alloy nanocrystals are successfully prepared by adjusting the molar ratio of precursor S/Se.The AgGa(S_1-xSe_x)₂ nanocrystals with homogeneous structure are proved by XRD,energy dispersion X-ray spectroscopy(EDX)and transmission electron microscopy(TEM).The results of ultraviolet visible near infrared results show that the bandgap of AgGa(S_1-xSe_x)₂alloy nanocrystals can be continuously changed with the decrease of the content of Se in the particles(1.83-2.81 e V).The photocatalytic degradation of MB,MV and methyl red(MR)is studied.And the results show that the match degree between the position of the strongest absorption peak of dye the and the bandgap value of AgGa(S_1-xSe_x)₂ nanocrystalline,has the influlence of photocatalytic degradation organic dyes.