化工进展2016，Vol.35Issue(9)：2973-2981,9.DOI:10.16085/j.issn.1000-6613.2016.09.046
阴离子聚电解质修饰磁性氧化石墨烯对碱性品红的吸附性能
Adsorption performance of an anionic polyelectrolyte-functionalized magnetic graphene oxide for basic fuchsin
摘要
Abstract
A novel anionic polyelectrolyte poly(4-styrenesulfonic acid-co-maleic acid)sodium (PSSMA)functionalized magnetic graphene oxide composite(M-rGO/PSSMA)was preparedvia a simple and facile one-step solvothermal method,and it was then used for removal of a cationic dye (basic fuchsin,BF)from aqueous solution. The resulted M-rGO/PSSMA was characterized by FTIR, SEM,TEM,TGA,VSM and DLS. Batch adsorption studies were carried out to investigate effects of the solution pH,adsorption time and initial dye concentration on the adsorption performances of BF onto the M-rGO/PSSMA. The adsorption isotherms,kinetics and mechanisms were also studied. Results indicated that the grafting of PSSMA onto the surface of M-rGO could effectively enhance the adsorption capacity of BF. The maximum adsorption capacity of BF onto the M-rGO/PSSMA was 588.2mg/g,and was nearly three times as much as that of M-rGO. Furthermore,the BF adsorption onto the M-rGO/PSSMA fitted the pseudo-second-order kinetic and Langmuir model well,respectively. The as-synthesized composite could be effectively separated and recovered under an external magnetic field,and regenerated for reuse by using NaOH ethanol solution. Such a graphene-based composite can be used as an excellent adsorbent for removing cationic pollutants from environmental wastewater.关键词
磁性氧化石墨烯/聚(4-苯乙烯磺酸-共聚-顺丁烯二酸)钠盐/吸附/阳离子染料/静电作用Key words
magnetic graphene oxide/poly(4-styrenesulfonic acid-co-maleic acid) sodium/adsorption/cationic dye/electrostatic interaction分类
通用工业技术引用本文复制引用
宋晓东,程昌敬,余海溶..阴离子聚电解质修饰磁性氧化石墨烯对碱性品红的吸附性能[J].化工进展,2016,35(9):2973-2981,9.基金项目
国家自然科学基金（21106116）、四川省科技支撑计划（2016GZ0280）及西南民族大学研究生创新项目（CX2015SZ052）。 （）
