介孔纳米TiO_2/P3HT复合材料的制备及其光催化性能研究  

Preparation and photocatalytic properties of mesoporous nano TiO_2/P3HT composites

作　　者：熊艳[1] 李文辉[1] 

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000

出　　处：《华中师范大学学报（自然科学版）》2016年第3期394-402,共9页Journal of Central China Normal University：Natural Sciences

基　　金：湖北省教育厅教学研究项目(2012109);荆楚理工学院教学研究项目(JX2015-24)

摘　　要：采用水热合成法制备出介孔纳米TiO_2;将制备的TiO_2与聚3-己基噻吩(P3HT)通过共混法制备TiO_2/P3HT复合微粒;分别以酸性橙II和亚甲蓝为模型有机污染物,考察TiO_2以及TiO_2/P3HT纳米复合材料在可见光、紫外光和阳光下的光催化活性和光催化稳定性.实验结果表明:P3HT对于介孔纳米TiO_2的掺杂能显著改善介孔TiO_2的光催化性能.掺杂前,介孔TiO_2在30min时对于酸性橙II和亚甲蓝的可见光降解率分别为31.26%和47.38%,紫外光降解率分别为39.47%和60.38%,阳光下的降解率分别为64.37%和76.09%;掺杂后,介孔TiO_2/P3HT复合材料30min时对于酸性橙II和亚甲蓝在可见光下的降解率分别为60.09%和71.45%,紫外光下的降解率分别为82.14%和88.61%,阳光下的降解96.62%和99.50%.The mesoporous nano TiO_2 were prepared by hydrothermal synthesis.Then,mesoporous nano TiO_2/P3 HT composites were prepared by blending of the above mesoporous TiO_2 with poly-3-hexylthiophene（P3HT）.Acid orange II and methylene blue were utilized as model of organic pollutants to investigate the photocatalytic activity and stability of TiO_2 and TiO_2/P3 HT nano composite under the visible light,ultraviolet light and the sun light,respectively.Results showed that P3 HT modification of TiO_2 significantly improved the photocatalytic properties of TiO_2.Without doping,photodegradation rates of mesoporous TiO_2 for acid orange II and methylene blue under visible light at 30 min were 31.26% and 47.38%,respectively.Under UV light,their photodegradation rates were 39.47% and 60.38%,respectively and that under the sunlight were 64.37% and 76.09%,respectively.After the nano TiO_2 was doped,the degradation rates of acid orange II and methylene blue in the visible light of the mesoporous TiO_2/P3 HT composites reached 60.09% and 71.45%,respectively.The degradation rate of UV was 82.14% and 88.61% respectively and that under the sunlight were96.62% and 99.50%,respectively.

关 键 词：介孔纳米TiO2 聚3-己基噻吩 复合材料 光催化作用 

分 类 号：O614.411[理学—无机化学] O611.4[理学—化学]