Synthesis Of Copper And Nickel Composite Metal Oxides And Capacity Characteristics Of Iodine Vapor

In this paper,Ag-Cu-C composite metal oxide containing carbon was prepared,its removal performance of iodine vapor was investigated,the materials before and after capture were characterized,and the mechanism of preparation and capture was explored.Based on the above mechanism,Cu-Ni-C was designed and synthesized and applied to the capture of iodine vapor.The effects of different ratios of copper and nickel,preparation temperature and capture temperature on the removal efficiency were investigated.Group at the same time,select the optimal,the optimal group,for example,to capture the experiment of iodine vapor,and using SEM,EDS,XRD,XPS,BET and FT-IR analysis before and after the test method for capture to analyze structure and surface properties of materials,materials was studied in iodine vapor capture behavior,explores the capture time effect on the properties of materials.Desorption experiments were carried out after the capture.?1?Ag-Cu-C with different addition amounts of copper and silver metals were prepared by hydrothermal synthesis method using silver nitrate?AgNO₃?,copper nitrate hexahydrate?Cu?NO₃?₂·3H₂O?,anhydrous glucose(C₆H₁₂O₆)and ammonia?NH3·H2O?at the preparation temperature of 90?.Ag-cu-c?Ag/Cu=1:6?in the optimal proportion group was selected in the iodine vapor capture experiment at the removal temperature of 70?,and the catch amount was 1753.3 mg/g.?2?Cu-Ni-C with different amounts of copper and nickel added were prepared by hydrothermal synthesis method with copper?Cu?NO₃?₂·3H₂O?,nickel?Ni?NO₃?₂·6H₂O?,anhydrous glucose(C₆H₁₂O₆)and ammonia?NH3·H2O?at the preparation temperature of 90?.The optimal ratio cu-ni-c?Cu/Ni=2:1?was selected for the iodine vapor capture experiment at the ambient temperature of 70?.SEM,BET and particle size test were used to explain the reasons for the different amounts of iodine vapor?I₂?.After that,Cu-Ni-C?Cu/Ni=2:1?was prepared at 70?,80?and 90?,and the capture experiments were conducted at 50?,60?,70?,80?,90?and 100?,respectively.The optimal preparation temperature and the optimal removal temperature were both 90?,and the catch amount was 2647.54 mg/g.?3?Cu-Ni-C?Cu/Ni=2:1?and I₂@Cu-Ni?Cu/Ni=2:1?have been carried on the exploration by SEM,EDS,XRD,XPS,BET,FT-IR respectively.The results show that the Cu-Ni-C?Cu/Ni=2:1?is mesoporous materials,and it contains elemental carbon,capture basic don't change the structure of the material before and after,iodine is uniformly distributed on the surface of the material after capture,capture process has both chemical combination and physical union,which is given priority to with physical bond.?4?The adsorption kinetics showed that at 90?,the capture of iodine vapor?I₂?by Cu-Ni-C?Cu/Ni=2:1?was more in line with the first-order kinetics,which was single-molecule adsorption.The adsorption process was reversible,and the desorption rate was up to 86.57%.