摘要
以磁性PS-DCDA树脂为前驱体,通过KOH活化法以不同KOH、磁性碳球质量比制备了磁性树脂基的磁性碳球,然后用其对水溶液中的Hg2+进行吸附,根据吸附量优化活化比,最后用SEM、FTIR、XRD、VSM和BET对吸附效果最好的磁性碳球样品进行了表征。结果表明,用KOH对磁性碳球进行活化,当KOH、磁性碳球的质量比为1∶1时,制得的磁性碳球对Hg2+的吸附效果最好。碳化后碳球样品表面存在大量的孔洞,比表面积达到了254m2/g,磁饱和强度达到1.82emu/g,在外加磁场下磁性碳球能快速地和液相分离。
The magnetic PS-DCDA resins were employed as precursor for preparation of resin-based magnetic carbon spheres through KOH activation with various mass ratio,the impregnation ratio was optimized according to adsorption quantity of Hg^2＋ using the prepared samples,and SEM,FTIR,XRD,VSM and BET were used to characterize the samples with the best adsorption capacity.The results showed that the adsorption effect of magnetic carbon spheres to Hg^2＋ was best when the mass ratio of KOH and magnetic carbon spheres was 1 ∶ 1.There were a number of holes on the surface of magnetic carbon spheres after carbonization,specific surface area was 254 m^2/g,magnetic saturation intensity reached 1.82 emu/g,and the magnetic carbon spheres could be quickly separated from aqueous solution with a applied magnetic field.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第10期9-11,共3页
Materials Reports
基金
国家自然科学基金(51061009)
甘肃省高校基本科研项目(13220)
兰州理工大学博士科学研究启动基金
