Synthesis Of Porous CeO₂/MoO₃ Composite And The Research Of Property Of Degradation On Rhodamine B

With the continuous development of industry,the shortage of water resources has become a global concern.A large amount of industrial waste water is discharged every year.It is imminent how to solve the waste-water of printing and dyeing industry.To develop a preparation method of catalyst which is simple,high efficiency,low cost,mild reaction conditions is important.It is a profound influence on the sustainable development of human beings and water environment friendly.In recent years,all kinds of rare earth oxides,rare earth doped oxide and perovskite composite oxides materials with rare earth oxides doped widely used in a variety of catalytic field.These materials with order hole will show better property.Thus,it is about to become one of the important research topic to study its properties and applications.Based on the current situation of water environment,the use of porous composite oxides catalysts for catalytic oxidation of organic dye waste water is going to be a promising treatment method.Based on the above ideas,in this paper,the work mainly includes:1.The first time,3 d stereo channel system of PAN/Ce?NO₃?₃ / H₃ [P(Mo₃O₁₀)₄]particles was prepared based polymer sol-gel process,and phase separation method of solvent removal Different quality ratio of Cerium molybdenum elements was synthesized.2.By controlling the slowly oxidation temperature of decomposition,and under different calcining temperature processing,porous MoO₃ / CeO₂ composite oxides particles were prepared.The smallest aperture was around 5 um.3.Using PAN/Ce?NO₃?₃ / H₃ [P(Mo₃O₁₀)₄] as precursor,we have prepared MoO₃ /CeO₂ composite oxides particles with porous structure.And they were characterized by SEM and XRD.The results show that the materials exist CeO₂ particles,and MoO₃ separates out in the channel.4.Later,the porous MoO₃ / CeO₂ composite particles will be used in the research of catalytic degradation of organic dyes rhodamine B,By a series of contrast test analysis which were at the different temperatures and ventilation can be clearly observed.The property of porous MoO₃ / CeO₂ composite particles catalytic at degradation of rhodamine B was efficient.The concentration of rhodamine B decreases gradually,and showed giant potential application value of the porous MoO₃ / CeO₂ composite particles in the catalytic degradation of organic dyes at 45 temperature and under the aeration velocity of 6L/min.