Design,Synthesis,Structure And Photocatalytic Activity Of The Complexes Based On Triazine/Pyrazole Derivatives

The rich N-heterocyclic compound is one of the most important ligand in the inorganic synthesis.The triazine-pyrazole derivatives possess the nice coordination ability,the largeπ-conjugated system,the fine planarity and stability,and make for the transfer of electron and energy.Moreover,the complexes based on triazine-pyrazole derivatives show potential application in the fields of catalyst,magnetic,biological activity and so on.In this thesis,we synthesized 11 complexes with the triazine-pyrazole ligands containing 2,4,6-tri(pyrazol-1-yl)-1,3,5-triazine(TpzT),2,4,6-tri(3,5-dimethyl-pyrazol-1-yl)-1,3,5-triazine(Tpz*T),2,4-bis(3,5-dimethyl-pyrazol-1-yl)-6-diethylamino-1,3,5-triazine(Bpz*eaT)and 2,6-di(5-methyl-lH-pyrazol-3-yl)pyridine(L1)and metal including Co(II),Ni(II),Cu(II),Cd(II),In(III)and Ru(III),and all the complexes were characterized by IR spectroscopy,UV-vis spectroscopy,thermal gravimetric analysis,X-ray single crystal diffraction and X-ray powder diffraction.In addition,the in situ reaction mechanism of the triazine-pyrazole ligands and how the synthesis condition influenced the structure of crystal were also discussed.The photocatalysis technology has attracted more and more attention due to the application in degrading the organic pollutant and purifying the air.It is the target of researchers to search for an efficient,eco-friendly and low-cost catalyst.In the process of the photocatalytic degradation,the photogenerated electron-hole pairs of the photocatalyst by dropping and modifying would be separated effectively.In this thesis,we used the complexes constructed by the triazine-pyrazole derivatives as photocatalyst to degrade the RhB under the UV irradiation,and discussed the mechanism of photocatalytic degradation.