Design And Synthesis Of Two-dimensional Material-phytate Complex And Its Sewage Treatment Performance

Two-dimensional material is the abbreviation of two-dimensional atomic crystal material,and its thickness is only a single or a few atoms.Two-dimensional crystal materials can be divided into graphene-based materials and graphene-like materials.Phytic acid(PA)is a natural organophosphorus compound extracted from plant seeds and has a wide range of sources.Because it has 6 negatively charged phosphate groups,phytic acid can complex with many kinds of metal ions,and can provide six pairs of hydrogen atoms to form a stable structure of free radical electrons,which can be used as an antioxidant.This article using supramolecular self-assembly technology,two twodimensional materials-phytic acid composites were designed and synthesized,and the application in sewage treatment was explored.Graphene oxide(GO)is a typical two-dimensional material.In this paper,graphene oxide-phytic acid composite foam(PAGF)was synthesized by hydrothermal method with phytic acid,and Au and Fe3O4 were loaded by soaking Nanoparticles get PAGF@Au&Fe3O4.The experimental results confirmed that PAGF@Au&Fe3O4 and PAGF have a similar three-dimensional structure,and show a good catalytic effect on 2-NA and 4-NP.After the end of the catalysis,the PAGF@Au&Fe3O4 foam can be recovered and reused after a simple immersion treatment.As a two-dimensional graphene-like material,MXene is a PA-MXene compound synthesized by one-step hydrothermal method with phytic acid,and PA-MXene compounds with different hydrothermal time are synthesized.The structure and composition of the PA-MXene composite were studied,and it was shown that PA-MXene produced a new substance Ti(OH)PO4 in the hydrothermal process,and the structure was transformed from a large sheet into a rod sheet.The experiments on the adsorption of methylene blue(MB)and rhodamine B(Rh B)on the composite materials were thoroughly investigated and analyzed.The results prove that the PA-MXene composite has high adsorption capacity and high recycling rate.The adsorption kinetics and thermodynamics were also investigated,and the results showed that the adsorption process of the composite was physical adsorption and monolayer adsorption.