碳、铈共掺杂改性TiO_2负载ACFS复合水净化材料的制备与性能  

Preparation and performance of Ce,C-TiO_2/ACFS composites for water purification

作　　者：李建新[1] 胡江海[1] 韦庆宣[1] 赵薇[1] 李雨晴[1] 刘雪霆[1] 崔鹏[1] 

机构地区：[1]合肥工业大学化学工程学院,可控化学与材料化工安徽省重点实验室,合肥230009

出　　处：《化工新型材料》2011年第7期52-55,共4页New Chemical Materials

基　　金：合肥工业大学大学生创新性实验计划项目(2009CXSY123);教育部留学回国人员科研启动基金;安徽高校省级自然科学研究重点项目(KJ2010A271);国家自然科学基金(20876030)资助

摘　　要：分别采用偶联法与溶胶-凝胶法制备了碳、铈共掺杂改性TiO2负载活性碳纤维(ACFS)复合水净化材料(Ce,C-TiO2/ACFS)。以亚甲基蓝模拟废水的脱色效果为考察目标,对其负载量进行了优化,得出最佳负载率分别为:5.82%和8.41%。扫描电镜(SEM)表征显示:偶联法制备的复合材料中,改性TiO2光催化剂在ACFS表面多以团聚体的形式负载,分布不均;而溶胶-凝胶法制备的复合材料为膜状负载,且分布均匀。循环脱色实验比较表明,溶胶-凝胶法制备的复合材料的脱色率高,重复使用性能较好,这与材料表面TiO2为均匀的膜状负载有关。Activated carbon fibers（ACFS） loaded Ce,C codoped TiO2 composites（Ce,C-TiO2/ACFS） for water purification were prepared using coupling and sol-gel routes.The decoloration performance of the as-prepared composites was evaluated by treatment of methylene blue model wastewater,and the optimal loading rates were investigated and found to be 5.82 % and 8.41 % for coupling and sol-gel routes,respectively.Scanning electron microscope（SEM） measurements indicated that,for coupling route,codoped TiO2 particles weren＇t uniformly distributed on ACFS and mainly existed in the form of agglomerates,while for sol-gel route,codoped TiO2 were uniformly loaded on ACFS as a film.Cyclic decoloration experiments showed that the composites of sol-gel route exhibited higher decoloration rates and better recyclables than those of coupling.

关 键 词：共掺杂改性TiO2 ACFS负载 复合材料 

分 类 号：O614.411[理学—无机化学]