以四氯化钛、硝酸铈为原料,以碳纳米管为载体,通过溶胶-凝胶法结合超临界干燥技术制备CeO2-TiO2/MWCNTs复合光催化剂。利用热重分析( TG)、X射线衍射( XRD)、扫描电子显微镜( SEM)、傅里叶红外光谱( FT-IR)等手段对催化剂进行表征。结果表明,超临界干燥避免了催化剂的团聚,TiO2为锐钛矿型,平均粒径为12nm。4h 后对甲基橙、亚甲基蓝和苯酚的降解率分别为99．14%、98．98%、98．56%,TOC 的去除率为73．84%、74．56%、84．82%。%CeO2-TiO2/MWCNTs composite photocatalyst samples were prepared by the sol-gel and Super Critical Fluid Drying ( SCFD) method. The morphology and size,structure of the composite were characterized by using X-ray diffraction( XRD) ,scanning electron microscopy( SEM) and other analytical testing methods. The results showed that anatase type TiO2 was formed with uniform size,the average grain diameter was 12nm. The usage of SCFD method avoided the agglomeration of the photocatalyst. The phtotocat-alytic activity was evaluated by phtotocatalytic degradation of the methyl orange,methylene blue and phneol. The degradation rate were 99. 14%,98. 98%and 98. 56%,TOC removal rate were 73. 84%,74. 56%and 84. 82%.
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