TiO2@蒙脱石复合凝胶制备及对染料废水的处理  

Preparation of TiO2@Montmorillonite Composite Gel and Its Treatment for Dye Wastewater

作　　者：付翔[1] 徐叶果 刘方华[1] 郭慧 李香兰[1] 冯胜雷 Fu Xiang;Xu Yeguo;Liu Fanghua;Guo Hui;Li Xianglan;Feng Shenglei(School of Urban Construction,Jiangxi University of Technology,Nanchang,Jiangxi 330098;School of Medicine,Jiangxi University of Technology,Nanchang,Jiangxi 330098;School of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038)

机构地区：[1]江西科技学院城市建设学院,江西南昌330098 [2]江西科技学院医学院,江西南昌330098 [3]河北工程大学土木工程学院,河北邯郸056038

出　　处：《非金属矿》2020年第5期87-90,共4页Non-Metallic Mines

基　　金：江西省自然科学基金(20192BAB206041);江西省教育厅科技项目基金(GJJ180969,GJJ180981,GJJ190997,GJJ191002);江西省交通运输厅科技项目(2019H0013);江西科技学院教育教学研究项目(JG1805)。

摘　　要：基于蒙脱石(MMT)纳米片与壳聚糖之间、羧甲基纤维素自身或与壳聚糖之间的氢键作用及链之间的交织缠绕作用,成功制备了Ti O2@MMT复合凝胶,对凝胶的组分及形貌结构进行了表征。结果表明,Ti O2@MMT复合凝胶具有三维多孔结构,有利于凝胶的分离和回收。考察了初始亚甲基蓝(MB)溶液p H值、凝胶Ti O2含量、凝胶用量及初始亚甲基蓝(MB)溶液质量浓度对MB染料催化降解性能的影响,发现在p H值为9,凝胶中Ti O2含量为40%,凝胶用量为200 mg/L的条件下,光照120 min,复合凝胶对200 mL质量浓度20 mg/L的MB染料降解率达100%。TiO2@MMT composite gel was prepared via hydrogen bond among MMT(montmorillonite),chitosan and carboxymethyl cellulose,and the intertwining interaction of chains.The composition and morphology of the gel were characterized.The results showed that TiO2@MMT gel possessed a 3D porous structure,facilitating the separation and recovery of the gel.Meanwhile,the effects of initial MB(methylene blue)pH value,TiO2 content in gel,gel dosage and initial MB(methylene blue)concentration on the catalytic degradation of MB dye by TiO2@MMT gel were investigated.It was found that 100%removal of MB could be achieved under the conditions of pH of 9,TiO2 content of 40%in gel,gel dosage of 200 mg/L,illumination of 120 min,MB concentration of 20 mg/L and volume of 200 mL.

关 键 词：TIO2 蒙脱石 染料 亚甲基蓝 催化降解 

分 类 号：X703.1[环境科学与工程—环境工程]