Design,Synthesis And Application Of The G-C₃N₄/rGO,MOF/wood Composites

With the development of science and technology,quality of people's life is rising.However,lack of resources has appeared on the earth,drinking water has been subjected to serious pollution,those have given people issued a red alert.So,looking for new alternative energy sources and controling of water pollution have become a key problem to solve.Based on the above problems,the contents of this paper are summarized as follows:?1?The nonmetal g-C₃N₄/r GO nanocomposites was prepared by the method of thermalpolycondensation,instead of a metal catalyst?the metal can be compromised,dissolved ordecomposed in the reaction system and also cause detrimental environmental pollution problems.?and a high-cost catalyst,used in the direct C-H arylation of heteroarenes.The development of efficient,low-cost,sustainable,environmentally friendly,metal-free photocatalytic materials for C-H arylation is urgently required.The resulting g-C₃N₄/rGO nanocomposite shows an excellent photocatalytic performance for direct C-H arylation of heteroarenes with aryl diazonium salts under visible light irradiation.?2?Design,synthesis and water treatment performance of UiO-66/wood membrane.WithZrCl₄,terephthalic acid and acetic acid as precursors,numerous MOF?UiO-66?nanoparticles are in situ formed in the 3D low-tortuosity wood lumens by a facile solve-thermal strategy to prepare UiO-66/wood membranes.The UiO-66 MOF with highly mesoporous structure hold the promising property for organic pollutants capture.Wood membrane,as a 3D substrate for anchoring UiO-66 nanoparticles,contains numerous elongated and open lumens along the growth direction,which contribute to enhancing the mass transfer of organic pollutants and increasing the contact probability of organic containments with UiO-66 MOF as water flowing through the membrane,and thus enhancing the organic pollutants removal efficiency.Due to the natural abundance and favorable scalability of wood,we designed an all-in-one filter by assembling three pieces of UiO-66/wood membranes together,which can efficiently remove various organic pollutants in water.The removal efficiency for all tested organic pollutants?rhodamine 6G,propranolol,BPA,BPS,1-NA?is more than 96.0%at the treatment rate of 1.0×10³ L?m^-2?h^-1.?3?Design,synthesis of UiO-66-NH₂/wood membrane and its removal performance of heavy metal ions in waste water.Firstly,UiO-66 MOF were prepared.Then UiO-66-NH₂ MOF nanoparticles are in situ formed in the 3D low-tortuosity wood lumens by a facile solve-thermal strategy with ZrCl₄ and amino terephthalic acid as precursors through the selection of different ligands.UiO-66-NH₂/wood membrane was prepared.The use of the coordination capacity of-NH₂and heavy metal ions can be used to efficiently remove heavy metal ions from the water and deeply purify water sources contaminated with heavy metal ions.The results showed that The removal efficiency for tested heavy metal ions(Hg²⁺,Cu²⁺)is more than 90.0%at the treatment rate of 1.0×10² L?m^-2?h^-1.