Synthesis And Properties Of Zeolite-Like Boron Imidazolate Framework Materials

Metal organic framework materials have become a hot research because of their novelty in structural framework and their wide application in fields of photoelectrocatalysis,fluorescence,and gas adesorption separation.Boron imidazole framework(BIFs),as a number of MOFs,can be used to synthesize tetradentate or tridentate borazoliu ligands prior to solvothermal synthesis,making it possible to artificially design and synthesize complexes with certain structures.In this paper,a series of novel metal borazolium framework materials were constructed by metallization,carboxylic acid ligand and tridentate borazolium ligands under solvothermal conditions,and it has been studied on the properties of catalysis.The studies of this paper could be divided into four chapters.The preface is in the first chapter,which mainly introduces the research progress of boron imidazolate frameworks materials,and the purpose and significance of the paper.At the same time,the structure and properties of representative boron imidazolate frameworks materials are briefly introduced.The second chapter is the experimental part,which mainly introduces the regents,instruments,test conditions and synthetic routes of the boron imidazolate frameworks involved in the experiment.The third chapter mainly introduces the structural characteristics and photocatalytic and characterization of the synthesized boron imidazolate frameworks materials.1.Using pre-synthesized tridentate boron imidazolate ligands,linear dicarboxylic acid ligands(glutaric acid,adipic acid and pimelic acid)and metal centers,a number of matal boron imidazolate framework materials with ACO topology were obtained under solvothermal conditions.The terminal coordination of BIF-92-Co is formic acid ligand,which has potential applications in the degradation of AB93,photocatalytic carbon dioxide reduction.BIF-94-Co has a good effect in degrading dye MB and photocatalytic carbon dioxide reduction.2.Using pre-synthesized tridentate boron imidazolate ligands,metal center and polyaromatic carboxylic acid ligand,a plurality of metal boron imidazolate frameworks with pillared-layer were obtained under the solvothermal conditions.The compounds 8 has some metal unsaturated sited in the structure,which not only can effectively degrade the dye MB,but also good catalytic activity for photocatalytic reduction of carbon dioxide.However,the structural stability of compound 8 is not very good.Gas adsorption desorption or photocatalysis will have a centain impact on the stability of its structure,which requires us to explore and try.The fourth chapter is a summary and outlook on the work done in this paper.