掺杂Ba2+改善锌铁氧体/还原氧化石墨烯的吸附性能和磁性能
Barium (Ⅱ)-doped zinc ferrite-reduced graphene oxide nanohybrids for superior adsorption and magnetic properties
摘要
Abstract
A one-step solvothermal method was used to prepare barium (Ⅱ)-doped zinc ferrite/reduced graphene oxide ( Ba2+-ZF/rGO) magnetic nanohybrid adsorbents. During the solvothermal treatment, Ba2+-ZF nanoparticles were formed from Ba2+, Fe3+and Zn2+ chlorides, which were anchored on the surface of rGO obtained from the reduction of GO with ethylene glycol. TEM and SEM results show that the Ba2+-ZF nanoparticles are uniformly distributed on the rGO sheets without any agglomeration. When used as adsorbents, the Ba2+-ZF/rGO nanohybrid with an rGO content of 35% possesses excellent adsorption capacities for methylene blue at different initial concentrations and the adsorption kinetics can be well-described by the pseudo-second-order kinetic model. The formation of Fe2+ from FeCl3·6H2O and the doping of Ba2+ into the spinel structure dramatically improve the magnetism of the zinc ferrite, which makes the magnetic separability of the nanohybrid outstanding. The Ba2+-ZF/rGO nanohybrid could be used as an efficient, magnetically separable adsorbent for removing organic dyes.关键词
Ba2+掺杂锌铁氧体-还原氧化石墨烯/一步溶剂热法/磁性能/吸附性能Key words
Barium ion doped zinc ferrite/reduced graphene oxide/One-pot solvothermal method/Magnetic property/Adsorption activity分类
化学化工引用本文复制引用
费鹏,乔俊,霍金仙,刘建红,钟明,苏碧桃..掺杂Ba2+改善锌铁氧体/还原氧化石墨烯的吸附性能和磁性能[J].新型炭材料,2017,32(5):402-410,9.基金项目
山西大同大学博士科研启动基金(2014-B-11) （2014-B-11）
国家自然科学基金(21174114) （21174114）
教育部"长江学者和创新团队发展计划"创新团队(IRT1177) （IRT1177）
甘肃省科技支撑计划(1204GKCA006) （1204GKCA006）
国家自然科学基金(21363021) （21363021）
西北师范大学科技创新项目(nwnu-kjcxgc-03-63). Doctoral Scientific Research Foundation of Shanxi Datong University ( 2014-B-11 ) （nwnu-kjcxgc-03-63）
National Natural Science Foundation of China (21174114) （21174114）
Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China ( IRT1177 ) （ IRT1177 ）
Scientific and Technical plan project of Gansu province (1204GKCA006) （1204GKCA006）
National Natural Science Foundation of China (21363021) （21363021）
Scientific and Technical Innova-tion Project of Northwest Normal University (nwnu-kjcxgc-03-63). （nwnu-kjcxgc-03-63）
