Controlled Preparation And Photocatalytic Properties Of Micro-nano Copper, Molybdenum And Zinc Oxides

The physical and chemical properties of micro-nano materials are special,and they are widely used in electrochemistry,photochemistry,sensitive sensing and other fields.Among the numerous researches on nanomaterials,semiconductor catalysts have always been a focus of attention.This article explored the following three research contents:(1)Nano-copper oxide hollow spheres were prepared in one step by hydrothermal method.After studying the influence of different experimental conditions on the material,a possible morphological evolution mechanism was proposed based on the soft template method and Ostwald ripening process.Through the degradation of rhodamine B,the study found that the degradation rate of nano-copper oxide hollow spheres is 92.4%,which has good degradation ability.(2)The molybdenum trioxide hollow tube was successfully synthesized by solvothermal method,and the influence of time and surfactant on the morphology and structure of molybdenum trioxide was studied separately,and a possible formation mechanism was proposed for the hollow tube structure.Studies have found that the structure of molybdenum trioxide has a high diversity.The molybdenum trioxide prepared by this method has a degradation rate of 93.3% for methylene blue.It shows excellent photocatalytic performance.(3)The tin-doped zinc oxide flower ball was successfully prepared by hydrothermal method.The product was fully characterized and analyzed by SEM,XRD,XPS,etc.,and the effect of the conditions on the structure of the material was studied by comparing the products prepared under different experimental conditions.Based on these studies,possible growth mechanisms have been proposed.The photocatalytic performance of the material was measured by simulating photocatalytic degradation of rhodamine B(Rh B).The results showed that the degradation rate of tin-doped zinc oxide flower ball to rhodamine B reached 97.1%,while the degradation rate of undoped rhodamine B was 90.2 %.This result shows that doping improves the photocatalytic performance of the material and realizes effective modification of the material.Through the study of the above three parts,this article explores new methods for preparing nano-metal oxides.By adjusting the experimental conditions,effective control of nano-metal oxides is achieved.Based on the photocatalytic degradation experiments of the above three materials,the photocatalytic performance of different nano-metal oxides and feasible methods to improve the photocatalytic performance were further studied.