Study On The Preparation Of Molybdate Photocatalyst And Its Degradation Performance Of RhB

With the rapid development of economic and industrial,human demand for energy also is increasing,oil energy has been widely applied,which has bring about serious pollution to the environment.therefore the oily sewage effectively manage environmental problems have aroused more and more attention.Although the concentration of organic pollutants in is not more,but it had high toxcity and difficult to degrade in nature and long life,which can bring serious harm to the environment and human health,it is at present our country most one of the causes of environmental pollution.Therefore,in the field of atmospheric and water pollution control and environmental protection,the demand for green materials and technologies with low price,high performance and high safety is also increasing.While the new semiconductor photocatalytic technology as the use of renewable and pollution-free solar energy through the light reaction,the formation of hydroxyl radicals in the sewage oxidation of organic pollutants into water and CO₂ small inorganic molecules to achieve the effect of degradation of a technology,photocatalytic technology and traditional processing technology than it has the advantages of simple operation,fast speed no,the degradation of two pollutants and advantages,so in the waste water pollution has attracted much interest among researchers.The main purpose of this thesis is the preparation of molybdate photocatalytic materials,conducted a series of studies on the characterization and photocatalytic performance.The research mainly includes the following three contents:（1）In the absence of any added surfactant,using hydrothermal and solvothermal method and high temperature solid phase method,synthesis temperature and time to the preparation of Cu₃Mo₂O₉ photocatalyst and orthogonal structure using X-ray powder diffraction（XRD）,transmission electron microscopy（TEM）and high resolution transmission electron microscopy（HRTEM）,UV-Vis absorption spectroscopy（UV-VIS）on the photocatalytic films were characterized by means of detection,the sample analysis results showed that XRD catalyst in the reaction of18 h to 190 ℃ is optimum synthesis conditions.After the degradation of organic pollutants RhB can be found,the photocatalytic degradation of B by using the prepared photocatalyst Cu₃Mo₂O₉,the degradation rate can reach 89.2% at room temperature.（2）The orthogonal structure of Bi₂MoO₆ photocatalyst was prepared byhydrothermal solvothermal method with water and ethylene glycol as solvent,and12 h at different temperatures.The samples were analyzed by XRD,SEM and UV-Vis absorption spectra.The formation process and morphology of the samples were studied by XRD and SEM analysis.The results showed that the target product Bi₂MoO₆ could be prepared at different temperatures.The photocatalytic activity of samples with rhodamine B as degradation target,using a xenon lamp as the light source,the use of different temperature catalyst prepared by degradation of photocatalytic activity compared to the sample.The results showed that the samples prepared by the reaction of 12 h at the temperature of 200 ℃ of 12 h had the best photocatalytic activity,and the degradation rate could reach as high as 96.2%.（3）By hydrothermal and solvothermal method,using ethanol as solvent,at a temperature of 100 ℃ at temperature conditions were 8h,10 h,12h,reaction 14 h photocatalyst prepared Ag₂MoO₄.Were characterized by a series of methods on the structure and morphology analysis of preparation.RhB was used as the target degradation material,and the photocatalytic degradation experiment was carried out in a small amount.Finally,the photo catalyst Ag₂MoO₄ prepared under the condition of 100℃of 10 h was prepared under the condition of other conditions,which was prepared by Compared with the chemical agent,it has the best photocatalytic activity.Therefore,it can be concluded that the reaction time is 10 hours when the catalyst is prepared under the same temperature condition.