期刊论文

Preparation of magnetic mesoporous TiO_2/graphene oxide composites and their adsorption for U(Ⅵ)

Tang, Zhenping(1578988350@qq.com)

中文

复合材料学报

1000-3851

2019

36

9

2176-2186

10.13801/j.cnki.fhclxb.20181220.002

湖南省自然科学基金(2016JJ6125) 南华大学研究生科学基金(2018KYY114) 湖南省教育厅(15C1192).

本校为第一且通讯机构

以氧化石墨烯(GO)、纳米Fe_3O_4、钛酸四丁酯(TBOT)为原料,合成了磁性介孔TiO_2/GO(Fe_3O_4 @TiO_2/GO)复合材料,用其处理浓度为10mg·L~(-1)的含U(Ⅵ)废水。研究了Fe_3O_4@TiO_2/GO复合材料中GO含量、溶液初始pH值、Fe_3O_4@TiO_2/GO复合材料投加量、反应时间、U(Ⅵ)初始浓度及共存离子对U(Ⅵ)吸附的影响。结果表明:在pH值为6、GO质量分数为60wt%、Fe_3O_4@TiO_2/GO复合材料投加量为10mg的条件下, Fe_3O_4@TiO_2/GO复合材料对U(Ⅵ)的吸附效果最佳,较同等条件下磁性介孔Fe_3O_4@TiO_2复合材料和GO的吸附量分别高了10.99mg·g~(-1)和1.91mg·g~(-1)。Fe_3O_4@TiO_2/GO复合材料对U(Ⅵ)的吸附180mi...

The magnetic mesoporous TiO2/graphene oxide (Fe3O4@TiO2/GO) composites were prepared by the synthesis of graphene oxide (GO), nano Fe3O4 and tetrabutyl titanate (TBOT), then the Fe3O4@TiO2/GO composites were used to treat U(Ⅵ)-containing waste water at a concentration of 10 mg•L-1. The effects of mass fraction of GO in Fe3O4@TiO2/GO composites, initial pH of solution, the dosage of Fe3O4@TiO2/GO composites, reaction time, initial uranium concentration and coexisting ions on U(Ⅵ) adsorption on Fe3O4@TiO2/GO composites were investigated. The r...