摘要
为比较二氧化钛/还原氧化石墨烯(TiO_2/rGO)复合材料和TiO_2的光催化降解脱色性能,以钛酸丁酯为前驱体,采用水热法制备了不同晶型的TiO_2和TiO_2/rGO复合材料,借助紫外漫反射吸收光谱仪、傅里叶红外光谱仪、拉曼光谱仪、X射线衍射仪和扫描电子显微镜等对TiO_2及其复合材料进行表征。分析混晶TiO_2和混晶TiO_2/rGO复合材料对活性红3BS染料废水的降解脱色效果。结果表明:在150℃水热12 h,再经过650℃煅烧4 h后,可制得锐钛矿型和金红石型同时存在的混晶TiO_2体系;在碱性条件下,于140℃水热72 h,不经过煅烧可制得较为纯净的板钛矿型TiO_2;锐钛矿型和金红石型混晶结构TiO_2体系对染料有一定的降解脱色效果,混晶TiO_2/rGO复合材料降解染料120 min后,降解脱色率高达99%。
In order to compare the photocatalytic degradation decoloring performance of TiO2/reduced graphene oxide(rGO)composites and TiO2,TiO2 of different crystal forms and TiO2/rGO composites were prepared by the hydrothermal method using tetrabutyl titanate as a precursor.TiO2 and TiO2/rGO composites were characterized by ultraviolet diffuser,Fourier transform infrared spectroscopy,Raman spectrography,X-ray diffractometer,scanning electron microscope and so on.The degradation decoloring effect of Reactive Red 3BS dye by mixed crystal TiO2 and mixed crystal TiO2/rGO composites were analyzed.The results show that mixed crystal TiO2 with coexisting anatase and rutile can be prepared under of hydrothermal reaction at 150℃for 12 h and calcination at 650℃for 4 h.Under alkaline conditions,pure brookite TiO2 can be prepared under hydrothermal reaction at 140℃for 72 h without calcination.Mixed crystal TiO2 with coexisting anatase and rutile has certain degradation decoloring effect on Reactive Red 3BS dye.The degradation decoloring rate of mixed crystal TiO2/rGO composites is up to 99%after 120 min.
作者
吴海培
高晓红
方婧
刘其霞
何平
WU Haipei;GAO Xiaohong;FANG Jing;LIU Qixia;HE Ping(School of Textile and Clothing,Nantong University,Nantong,Jiangsu226019,China;Jiangsu Golden Autumn Elastic Fabrics Co.,Ltd.,Nantong,Jiangsu226001,China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2018年第12期78-83,共6页
Journal of Textile Research
基金
国家交通运输部应用基础研究项目(2015319813310)
南通市关键技术研究(工业创新)项目(GY22016007)
