摘要
采用恒温搅拌法和水热法首次制备磁性三乙烯四胺氧化石墨烯(M-T-GO),并通过SEM和XPS对M-T-GO进行表征.以M-T-GO为吸附剂,分析p H值、吸附时间和初始浓度对阴离子染料酒石黄(TY)和阳离子染料亚甲基蓝(MB)吸附效果的影响.并对吸附动力学和吸附等温线进行拟合.结果表明:M-T-GO对离子型染料的吸附过程符合Langmuir吸附等温式和拟二级反应动力学描述.M-T-GO对TY和MB具有较好的吸附性能,饱和吸附量分别为157.23mg/g和169.49mg/g.与GO相比,M-T-GO对离子型染料的吸附效果更优异,同时具有快速分离和易再生的优点.
Magnetic Triethylene-tetramine Graphene oxide （M-T-GO） was firstly synthesized by constant temperature stirring and hydrothermal methods in this work, and characterized by Scanning electron microscope （SEM） and X-ray photoelectron spectrum （XPS）. Adsorption capacity of ionic dyes on M-T-GO under different pH, adsorption time and initial concentration were investigated. At the same time adsorption kinetics and adsorption isotherm were fitted respectively. Pseudo-second-order model and Langmuir model fitted the adsorption of ionic dyes on M-T-GO. The adsorption property of M-T-GO for TY and MB was outstanding and the saturated adsorption capacities were 157.23mg/g and 169.49mg/g, respectively. Compared with GO, M-T-GO could remove ionic dyes more effectively. Moreover, M-T-GO made separation easy in the foreign magnetic field and possessed good performance of regeneration.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2016年第7期2020-2026,共7页
China Environmental Science
基金
哈尔滨市科技创新人才研究专项资金优秀学科带头人项目(2015RAXXJ006)
国家自然科学基金(21501036)
关键词
氧化石墨烯
三乙烯四胺
磁性
吸附
离子型染料
graphene oxide
triethylene tetramine
magnetic
adsorption
ionic dyes
