| Functional polymer materials are widely used in radiochemistry.COFs,as known as organic molecular sieve,is a new kind of functional polymer materials.In order to study the potential application of COFs in radiochemistry,several imine-linked COFs were synthesized in this paper and,ZSM-5,which has the similar molecular structure to COFs,was selected to analogy study not only on the structure,the performance,but also on the sorption of Th(?)and the photocatalytic activities as well.At first,design and synthetize the COFs-bipy and MFP-1,in the reaction process,the graphene analogues were used to induce the crystalline of the 2D COFs.It was found that graphene and its analogues as solid template can adjust weak interaction force between 2D layer in the process of the synthesis COFs materials.And then sorption of Th(?)on ZSM-5 and organic materials MFP-1 have been studied in detail by the method of batch technique.The result shown that the sorption of Th(?)on ZSM-5 zeolite and MFP-1 are kinetic quickly finished.The adsorption mechanism of Th(?)on ZSM-5 and MFP-1 was mainly the formation of the surface complex.Sorption process were all spontaneous endothermic process,which affected by the pH and temperature.MFP-1 polymer materials can be recycled at least three times.In the course of using sythesized material,the adsorption performance had not changed and the structure of the materials was relatively stable.An effective method,which can remove radioactive contaminant from water,has important research value and broad application prospect in terms of environmental protection and resource recovery.At last,tested the interaction of pyridine functional organic polymer COFs-bipy and gold nanoparticles.The result shown that the COFs-bipy could adjust and restrict the distribution particle size of gold nanoparticles.After that,the photocatalytic activity of Au@COFs-bipy has been tested and the composite materials shown high catalytic activity and stability. |
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