Preparation And Catalytic Properties Of Cupric Hydroxide Nitrate And Copper-based Tannate Nanoparticles

There are several disposal methods have been applied to treat various kinds of organic pollutants,such as burying and burning.But the above methods will cause secondary pollution to the environment.The current researches are highly focused to solve the problem of secondary pollution,and people began to explore the use of chemical reaction to dispose organic waste.Such reactions are difficult to conduct spontaneously unless adding catalysts.These primary catalysts mainly include noble metal nanocatalysts,nickel-based catalysts,and supported catalysts.However,most existing catalysts have problems such as complicated synthesis process,easy deactivation,difficulty in recycling,and high price.In order to solve the above problems,a large number of researchers conducted a series of studies.This thesis provides a synthesis method for nanocatalysts with simple preparation process,high activity and strong cycle stability.The main research content includes:1.The porous copper nitrate nanosheets with large specific surface area are effectively synthesized at room temperature by using copper nitrate as copper source,water as the reaction solvent.Some experimental parameters are explored,such as the amount of raw materials,the type of alkali,solvent system,reaction time,and temperature.The catalytic properties of nanomaterials are investigated by the reduction of p-nitrophenol.The results show that nanosheets have good catalytic activity and cyclic catalytic stability.2.The cupric tannate/cuprous oxide composite nanoparticles are prepared by using copper oxide nanospheres as seeds.Regular morphology and uniform size of the composite nanoparticles have effectively improved the stability of the cuprous oxide solution in aqueous solution.The effects of experimental factors are explored,such as the amount of raw materials added,solvent system,type of acid and alkali,and reaction temperature on the final product.The catalytic performances of cuprous oxide nanospheres and cupric tannate/cuprous oxide composite nanoparticles are compared by the hydrogenation reduction of p-nitrophenol as the model.The results show that the copper tannate/cuprous oxide composite nanoparticles have better catalytic activity.