writer：Ying Lu, Zhihong Wu, Mufang Li, Qiongzhen Liu, Dong Wang?
keywords：Hydrophilic PVA-co-PE nanofiber membrane ，Iminodiacetic acid functionalization
source：期刊
Issue time：2014年
A novel hydrophilic poly(vinyl alcohol-co-ethylene) (PVA-co-PE) nanofiber membrane for heavy metal
ions removal was fabricated by the solid phase synthesis of iminodiacetic acid (IDA) on nanofiber
membrane surfaces. The hydrophilic PVA-co-PE nanofiber membranes were activated with cyanuric chloride.
The IDA was then covalently linked to the activated PVA-co-PE nanofiber membranes. The chemical
structures of activated and functionalized PVA-co-PE nanofiber membranes were confirmed with
FTIR–ATR. The morphology of PVA-co-PE nanofiber membranes were characterized with SEM. The
increase in the amount of IDA on functionalized PVA-co-PE nanofiber membranes significantly improved
the adsorption amount of Cu2+. The IDA functionalized PVA-co-PE nanofiber membranes demonstrated
excellent adsorption capability of Cu2+, Co2+, Zn2+ and Ni2+. The adsorption of above heavy metal ions
could be repeatedly regenerated by desorbing the ions adsorbed on nanofiber membranes. The novel
IDA functionalized PVA-co-PE nanofiber membranes have great potential in the application of industry
and drinking water treatment.