【摘要】 采用Sol-gel法制备了CeO2不同掺杂比例的TiO2粉体,研究了掺杂比例对样品晶型、光谱吸收曲线及光催化降解亚甲基蓝的影响,结果表明:掺杂CeO2的TiO2样品对光波长的响应阈值为500nm左右;样品在普通日光灯下照射4h,对亚甲基蓝的降解率明显优于DegauseP25,其中CeO2掺杂比率为7%(mol)的样品降解率达到了最大。更多还原

【Abstract】 TiO₂ powders doping with different content of CeO₂ are prepared by Sol-gel method. The effects of doping proportion on the crystal structure, absorption spectrum and photocatalytic degradation of methylene are studied.The results indicate that the absorbing wavelength threshold value of TiO₂ samples doping with different CeO₂ content is about 500nm. The rate of degradation of methylene of the sample is higher than that of Degause P25 after 4h irradiation by fluorescent lamp.The optimal content of CeO₂ is 7%（mol）.更多还原