Synthesis,Structure,Catalytic And Adsorption Properties Of Supramolecular Compounds Based On Polyvalent Nitrogen-Containing Organic Cations

In this paper,we synthesized a series of bivalent,trivalent,tetravalent and hexavalent organic cations as template agents then introduced them to self-assemble with metal halide/pseudohalide to obtain 16 supramolecular compounds with novel structures via solvothermal method and room temperature evaporation method.At the same time,we also investigated the catalytic and adsorption properties of these compounds.First,we synthesized 9 supramolecular compounds with divalent and trivalent organic cations and polyacids,which are:[C14H18N2][NH4][β-Mo8O26)0.5](1),[C15H20N2][Mo18O56)]0.5(2),[α-Mo8O26][C16H22N2]2(3),[Mo6O19][C17H24N2](4),[βMo8O26]2[C18H26N2)]4(5),[Mo6O19]2[C15H36N2]2(6),[Mo4O13][Mo3O9][H2O][C27H30N3](7),[Mo4O13][Mo3O9][C30H36N3](8)和[Mo8O26]1.5[C24H27N6]2[H2O]2(9),respectively.The structure analysis of compounds 1-9 show that 1,3-alkyl divalent cationic bromide salt and polyacid could induce the formation of a 2D anion supramolecule under pH=2-3,150℃.At the same time,the compounds 1-9 were characterized by IR,UV-vis,elemental analysis,PXRD,TG,etc.we also explored the tetracycline and oxytetracycline degradation performance of the compounds 1-9 can reach 78.49%in 185 mins,and the OTC degradation rate can reach 82.02%at the same time.In addition,the catalytic properties and influence conditions of compounds 1-9 were studied.Secondly,we use compound 2 and TiO2 to prepare the composite material(Mo/TiO2),and we found when the TiO2 was 0.15g,the photocatalytic degradation efficiency reached the maximum,and the degradation rate of TC reached 97%after 2 hours.Moreover,we also investigated the effects of pH,temperature and active substances on the degradation performance of TC.Finally,we used 1,3,5-tribromomethyl benzene,1,2,4,5-tetrabromomethyl benzene,1,2,3,4,5,6-hexabromomethyl benzene to react with tetramethylpyridine to prepare bromine salt respectively,and react with silver halide to obtain three supramolecules,which are:[C30H36N3][Ag6I9](10),[C51H57N6][Ag9Br15](11),[C48H56CIN6O2][Ag2Br7](12),respectively.1,3,5-tribromomethylbenzene is reacted with triisopentylamine to form 3-valent cations,and then reacted with metal halides to form four supramolecules,which are:[C39H75N21][CdI4](13),[C40H75N3S][Cu2N4S4](14),[C39H75IN2]2[Hg3I10](15),[C39H75N2Br5Hg2S](16).The adsorption properties and influencing factors were studied.The results showed that compound 11 has a good adsorption effect on TC respectively.