Synthesis And Studies On The Photocatalyst Of Carban Base Composite

Semiconductor photocatalyst activity of its own has a good light, and relatively cheap, photocatalytic efficiency,it will completely break down pollutants such as feature is its people have a deeper exploration based on the semiconductor oxide (TiO2).The carbon material has characteristics as developed pore structure;carbon materials with high specific surface area and strong adsorption ability;for gas inorganic or organic substance and colloid particles in the solution has very strong adsorption capacity;And it becomes chemical stability,high mechanical strength,acid resistance,alkali resistance,heat resistance,insoluble in water and organic solvents.Based on the above characteristics,it has huge potential in applications of photocatalysisIn this paper,on the basis of the carbon synthesis a new type of semiconductor compound photocatalyst as the research objectives to explore effective ways to improve the semiconductor photocatalytic performance.Specific research contents are as follows1.Micron carbon microspheres (CMS) were fabricated by hydrothermal method with the sucrose as raw material which were dissolved in the water to regulating the pH fluid into the high-pressure reaction kettle.Then through scanning electron microscopy (SEM) to test the microscopic characterization to observe its morphology.2.The Cu-Cu2O/CMS were fabricated by hydrothermal method with CuSO4,sucrose,ethylene glycol as raw materials. Through XRD, SEM, FL as Characterization methods to test the Cu-Cu2O/CMS,get Cu2O exist in octahedral structure. When the doping ratio was30%, hydrothermal temperature was140℃.hydrothermal time was12h,the Cu-Cu2O/CMS shows the highest photocatalytic activity.3.The Cu2O-ZnO/CMS were fabricated by hydrothermal method with CuSO4, ZnSO4, CMS as raw materials.Through XRD,SEM,FL as characterization methods to test the microstructure,phase composition and morphology.The results show that distribution of cuprous oxide and zinc oxide on the surface of carbon microspheres. When the hydrothermal temperature was150℃,ZnO:Cu2O doping quantity is1:2,the hydrothermal time determined in12h,the doping ratio was30%,the Cu20-Zn0/CMS shows the highest photocatalytic activity.4.The TiO2precursor was made by using hydrothermal method, through the Ti (OC4H9)2/CH3COOH and P123/ethanol dissolved with each other.Then the TiO2precursor was calcinated at high temperature with nitrogen protection to roast carbonization. Through XRD, SEM, N2adsorption/desorption as Characterization methods to test the sample.When the calcination temperature was500℃.calcination time was4h,the catalyst pore radius of the sample was10.9878nm,specific surface area was104.3m2/g.In summary,this paper implements a new carbon photocatalyst preparation Cu-Cu2O/CMS;Cu2O-ZnO/CMS photocatalyst achieved P-N type semiconductor of doping,and try to preparation Carbon-based titanium dioxide.The three methods are effective to improve the photocatalytic activity.