首页|Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi-walled Carbon Nanotube and β-cyclodextrin
Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi-walled Carbon Nanotube and β-cyclodextrin
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution additive.Furthermore,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating solution.The results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously increased.The water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m2·h),which is 44.3%higher than that of the pure PVDF membrane.When β-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified membrane.This research will provide a new idea and simple method for developing novel high-performance composite NF membranes.
NETL
NSTL
万方数据
