Preparation Of Corrugated Glass Fiber Wiki Composites And Mechanism Of Photocatalytic Degradation Of Bromacil

In the process of pesticide production,there are a lot of pesticide residues in wastewater discharged from pesticide factories and agricultural spraying pesticides,which will cause great harm to the environment and human health.Therefore,it is urgent to develop new environmentally friendly materials to effectively treat pesticide wastewater.Anatase titanium dioxide semiconductor material has a good application value in the treatment of pesticide wastewater by high efficiency and environmental protection photocatalytic method.In this paper,anatase semiconductor material and corrugated glass fiber（GFSs）were compounded,further,ion-doped titanium dioxide were adopted to improve the catalytic degradation ability of the catalyst for pesticide.Zinc oxide/Titanium dioxide/corrugated glass fiber composites（ZnO/TiO₂/GFSs）were synthesized by hydrothermal method with impregnation method.One-step Hydrothermal Synthesis of Cerium dioxide/Titanium dioxide/Corrugated Glass Fiber Composites（CeO₂/TiO₂/GFSs）.XRD,FESEM,TEM,XPS,BET-BJH,UV-Vis DRS and PL were used to characterize and analyze the phase structure,microstructure,element valence state,specific surface area,light response ability,carrier separation life,and light quantum efficiency of composite materials.A static experiment was conducted to study the mechanism of photocatalytic degradation of BRO,a common pesticide in water,and the specific surface area of corrugated glass fiber carrier increased to about 115.14 m²/g in zinc oxide/titanium dioxide/corrugated glass fiber composite.The heterogeneous structure of zinc oxide/titanium dioxide enhanced the photoefficiency of the composite material,making the photocatalytic activity of the composite material superior to that of the single material,and significantly improved the removal effect of BRO.The degradation efficiency of The composite material prepared with 0.01 mol/L zinc nitrate solution reached 99%within 4 h.In the cerium dioxide/Titanium dioxide/corrugated glass fiber composites,the presence of cerium dioxide produces additional energy levels,resulting in the reduction of the band gap of the composites to Eg=2.82 e V and the improvement of the light utilization range The formation of cerium dioxide/titanium dioxide hetero-junction promotes electron transfer and makes more photogenic electron holes participate in the catalytic reaction,which effectively improves the photocatalytic activity of the composite.At the same time,the cycle of Ce⁴⁺/Ce³⁺REDOX center also significantly improved the separation efficiency of electron-hole pair.Compared with ZnO/TiO₂/GFSs composite,The degradation rate of CeO₂/TiO₂/GFSs composite material for BRO reached 100%in 2.5 h,showing a faster removal rate and higher removal efficiency for herbicide.