卟啉化聚合物纤维膜负载TiO2光催化剂的制备及其光催化性能研究  

Preparation of porphyrinated polymer fiber supported TiO_2 photocatalyst and its photocatalytic activities

作　　者：陈哉娜 冯潇潇[1] 韩丹敏 王丽婷[1] 曹伟硼 李寒梅[1] 邵林军[1] 

机构地区：[1]浙江省精细化学品传统工艺替代技术研究重点实验室、绍兴文理学院化学化工学院,浙江绍兴312000

出　　处：《化学研究与应用》2014年第7期993-996,共4页Chemical Research and Application

基　　金：浙江省新苗人才计划项目(2013R426006)

摘　　要：通过烯基铁卟啉分别和苯乙烯、丙烯腈及甲基丙烯酸甲酯共聚制备三种卟啉化聚合物,然后利用静电纺丝技术将这三种卟啉共聚物与TiO2颗粒共纺制备卟啉共聚物纤维膜负载TiO2光催化剂。扫描电子显微镜(SEM)表征结果显示卟啉共聚物纤维负载TiO2催化剂都具有良好的纤维结构,纤维直径约为1.0-2.0μm。X-射线衍射仪(XRD)则表明TiO2的晶型在纺丝前后都没有受到明显影响。对甲基橙溶液的催化降解实验结果显示:铁卟啉-丙烯腈共聚物负载TiO2催化剂的光催化活性最高,而且铁卟啉的含量对催化剂催化活性起着非常重要的作用。优化后的铁卟啉-丙烯腈共聚物纤维膜负载TiO2光催化剂对甲基橙溶液的脱色率达到76.3%,同时纤维膜结构有利于催化剂的回收和重复使用。Three perphyrinated polymers were synthesized via copolymerization of vinyl perphyrin with methyl methacylate, styrene and acrytonitrile, respectively. By coelectrospinning with Ti02 particles,these porphyrinated polymers were prepared into fiber mats and used as the supporting materials for TiO2. SEM images showed that all the three samples were prepared into well-defined fibers with diameters arrange from 1 to 2μm. The XRD characterizations demonstrated that the electrospinning process had no effect on the anatase structure of TiO2 The photocatalytic activities of the three fiber mats were examined for the photodegradation of methyl orange in aqueous solution under the irradiation of visible light. The results showed that this polyacrylonitrile fiber mat supported TiO2 photocatalyst was very efficient for the photodegradation of methyl orange with decoloration percent being over 76. 3%. It is worth nothing that the larger fiber mat could greatly facilitate the recovery and reuse of the catalyst.

关 键 词：卟啉 TIO2 静电纺丝 纤维膜 光催化活性. 

分 类 号：O614.411[理学—无机化学]