摘要
以Fe3O4和氧化石墨烯(GO)为原料,采用静电自组装法制备了Fe3O4/GO磁性复合材料。研究了Fe3O4/GO复合材料在不同条件下对亚甲基蓝(MB)的吸附性能。结果表明:在吸附剂用量为0.03 g,pH为9,吸附时间为40 min,MB的初始浓度为30 mg/L,反应温度为303 K的条件下,Fe3O4/GO复合材料对MB的吸附容量可达90.43 mg/g,且吸附行为符合Langmiur等温吸附方程。同时,分别采用准一级模型和准二级模型考察其吸附动力学,结果符合准二级模型。
In this paper,Fe3O4/graphene oxide composites were synthesized by electrostatic self-assembly with Fe3O4 and graphene oxide(GO) as raw materials.The adsorption properties of Fe3O4/GO composites on methylene blue under different conditions were studied.The results showed that the proper adsorption conditions of Fe3O4 /GO composites on MB were as follows:the adsorbent dosage was 0.03 g,pH was 9,time was 40 min,the initial concentration of MB was 30 mg/L,and the reaction temperature was 303 K.The adsorption process was in line with the Langmiur adsorption equation.At the same time,two classical adsorption kinetic equations were selected to describe the adsorption behaviors,MB adsorption agreed well with pseudo second-order adsorption kinetics model.
作者
常亮亮
刘鹏
乔成芳
徐珊
曹宝月
李蕊
CHANG Liangliang;LIU Peng;QIAO Chengfang;XU Shan;CAO Baoyue;LI Rui(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources/Shangluo University,Shangluo 726000)
出处
《分析科学学报》
CAS
CSCD
北大核心
2020年第6期827-832,共6页
Journal of Analytical Science
基金
陕西省教育厅自然科学基金(No.17JS034,17JS035)
商洛市科学技术研究发展计划(No.SK2018-20)
商洛学院自然科学基金(18SKY015,17SKY002)
陕西省大学生创新创业训练计划(No.S201911396012)。
关键词
氧化石墨烯
亚甲基蓝
复合材料
吸附
Graphene oxide
Methylene blue
Composite material
Adsorption
