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分别采用溶胶–凝胶法和水热法制得Ti O2–GO(氧化石墨烯)复合材料,利用X射线衍射(XRD)、扫描电镜(SEM)、透射电子显微镜(TEM)、X射线能谱(EDS)、紫外可见漫反射光谱(UV–vis DRS)等对其进行表征,并将制备的Ti O2–GO复合材料用于降解偏二甲肼(UDMH)废液。结果表明:溶胶凝胶法制备的Ti O2–GO中Ti O2颗粒尺寸较大、比表面积小,颗粒将GO覆盖,使GO吸附作用弱化;而水热法制备的Ti O2–GO中Ti O2颗粒尺寸小,比表面积大,在GO表面分散性好,GO吸附作用较强;溶胶凝胶法、水热法制备的Ti O2–GO对20 mg/L UDMH废水的2 h降解率分别为73.93%、79.34%,水热法制备的Ti O2–GO催化性能较好。
Ti O2-GO (graphene oxide) composites were prepared by sol-gel method and hydrothermal method respectively. The structure of the composites was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) EDS and UV-vis DRS. The Ti O2-GO composites were prepared for the degradation of UDMH waste liquid. The results show that Ti O2 particles prepared by sol-gel method have larger size and smaller specific surface area, and the particles cover GO, which weakens the adsorption of GO. In Ti O2-GO Ti O2 particles prepared by hydrothermal method The results showed that the 2-h degradation rates of Ti O2-GO prepared by sol-gel method and hydrothermal method for 20 mg / L UDMH wastewater were 73.93% , 79.34%, Ti O2-GO prepared by hydrothermal method has better catalytic performance.