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以钛酸丁酯为钛源、二乙醇胺为氮源、偏钒酸铵为钒源,用溶胶-凝胶法,以不同掺杂方式合成V-N-TiO2。通过紫外可见漫反射吸收光谱(UV-VIS)、X射线衍射(XRD)、扫描电镜图片(SEM),对不同掺杂方式制备的V-N-TiO2进行结构表征;以苯酚为污染物,考察其光催化活性。结果表明,采用将氮源和钒源引入钛源体系的掺杂方式制备的V-N-TiO2具有最佳的光催化活性,在紫外光下照射100min,对苯酚的降解率可达98.63%,在模拟太阳光照射300min后,对苯酚的降解率可达91.83%。
Titanium tetrabutoxide was used as titanium source, diethanolamine as nitrogen source and ammonium metavanadate as vanadium source. V-N-TiO2 was synthesized by different doping methods by sol-gel method. The structure of VN-TiO2 prepared by different doping methods was characterized by UV-VIS, XRD and SEM. Phenol was used as the pollutant to investigate its light Catalytic activity. The results show that VN-TiO2 prepared by doping nitrogen source and vanadium source into the titanium source system has the best photocatalytic activity. Under ultraviolet light irradiation for 100min, the degradation rate of phenol reaches 98.63% After 300min sunlight, the degradation rate of phenol up to 91.83%.