摘要
采用溶剂热法制备了纳米Fe_(3)O_(4)修饰的酸化膨润土(H-B@Fe_(3)O_(4))磁性复合材料,并通过SEM、XRD对其进行结构表征,结果表明,Fe_(3)O_(4)纳米颗粒粒径分布窄,平均粒径为230 nm,可均匀地分布在膨润土表面和层间。H-B@Fe_(3)O_(4)复合材料具有典型的铁磁性,饱和磁化强度为13.8 A/m。吸附性能测试表明,H-B@Fe_(3)O_(4)复合材料对亚甲基蓝(MB)的去除率可达99.9%,且MB吸附后易磁化分离,在去除水溶液中MB等污染物方面具有潜在应用价值。
The magnetic composite of Fe_(3)O_(4)nanoparticles decorated HCl-acidified bentonite(H-B@Fe_(3)O_(4))was successfully synthesized by the solvent-thermal method and was systematically characterized by XRD and SEM.The results show that Fe_(3)O_(4)nanoparticles,with narrow particle size distribution and an average particle size of 230 nm,evenly distributed on the surface and between layers of bentonite.Moreover,the H-B@Fe_(3)O_(4)composite material delivered typical ferromagnetism with the saturation magnetization of 13.8 A/m.The adsorption test showed that H-B@Fe_(3)O_(4)presented a remarkable removal efficiency(99.9%)for methylene blue(MB)and was easy to be separated via magnetization after MB adsorption.Therefore,the H-B@Fe_(3)O_(4)composite possesses great potential in the aspects of pollutants removal from aqueous solutions.
作者
裴霏
刘婷
雷田旺
张喜娜
王娜
雷杨娜
PEI Fei;LIU Ting;LEI Tianwang;ZHANG Xina;WANG Na;LEI Yangna(School of Civil Engineering,Xi′an Traffic Engineering Institute,Xi′an 710300,China;College of Chemistry and Chemical Engineering,Baoji University of Arts and Sciences,Baoji 721000,China;Shaanxi Climate Center,Xi′an 710300,China)
出处
《化工科技》
CAS
2021年第5期44-49,共6页
Science & Technology in Chemical Industry
基金
陕西省科技厅项目(2021SF-493,2021JQ-954)
商洛市气候适应型城市重点实验室研究项目(SLSY2019015,SLSY2019024)。
关键词
磁化分离
污染物去除
磁性膨润土
溶剂热法
Magnetic separation
Pollutants removal
Magnetic bentonite
Solvothermal mehod
