TY - JOUR
T1 - Novel antibifouling nanofiltration polyethersulfone membrane fabricated from embedding TiO 2 coated multiwalled carbon nanotubes
AU - Vatanpour, Vahid
AU - Madaeni, Sayed Siavash
AU - Moradian, Rostam
AU - Zinadini, Sirus
AU - Astinchap, Bandar
PY - 2012/4/27
Y1 - 2012/4/27
N2 - Multiwalled carbon nanotubes (MWCNTs) coated by anatase titanium dioxide (TiO 2) nanoparticles were synthesized via the precipitation of TiCl 4 precursor on the acid oxidized MWCNTs and used in preparation of nanocomposite polyethersulfone (PES) membranes. In this work, the effect of embedding TiO 2 coated MWCNTs in PES matrix on membrane morphology, properties and antibiofouling was presented and the obtained results were compared with the prepared oxidized MWCNTs and TiO 2 blended PES membranes. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses showed that the formed TiO 2 on the surface of MWCNTs had anatase nanostructure with size in the range of 10-20 nm. The scanning electron microscopy (SEM) images displayed a finger-like and porous structure for all NF membranes and showed that agglomeration of TiO 2 coated MWCNTs is very low. Contact angle measurements indicated that coating of TiO 2 nanoparticles on the surface of oxidized MWCNTs improved the hydrophilicity of the obtained membranes. The pure water flux of the blend membranes increased with the content of TiO 2 coated MWCNTs. Fouling resistances of membranes evaluated by whey solution filtration revealed that 0.1 wt.% TiO 2 coated MWCNTs membrane had the best antibiofouling properties due to its lowest surface roughness and synergistic photocatalytic activity induced by incorporated nanoparticles.
AB - Multiwalled carbon nanotubes (MWCNTs) coated by anatase titanium dioxide (TiO 2) nanoparticles were synthesized via the precipitation of TiCl 4 precursor on the acid oxidized MWCNTs and used in preparation of nanocomposite polyethersulfone (PES) membranes. In this work, the effect of embedding TiO 2 coated MWCNTs in PES matrix on membrane morphology, properties and antibiofouling was presented and the obtained results were compared with the prepared oxidized MWCNTs and TiO 2 blended PES membranes. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses showed that the formed TiO 2 on the surface of MWCNTs had anatase nanostructure with size in the range of 10-20 nm. The scanning electron microscopy (SEM) images displayed a finger-like and porous structure for all NF membranes and showed that agglomeration of TiO 2 coated MWCNTs is very low. Contact angle measurements indicated that coating of TiO 2 nanoparticles on the surface of oxidized MWCNTs improved the hydrophilicity of the obtained membranes. The pure water flux of the blend membranes increased with the content of TiO 2 coated MWCNTs. Fouling resistances of membranes evaluated by whey solution filtration revealed that 0.1 wt.% TiO 2 coated MWCNTs membrane had the best antibiofouling properties due to its lowest surface roughness and synergistic photocatalytic activity induced by incorporated nanoparticles.
KW - Antibiofouling
KW - Functionalized MWCNTs
KW - Mixed matrix membranes
KW - Photocatalytic activity
KW - Roughness
UR - http://www.scopus.com/inward/record.url?scp=84857984175&partnerID=8YFLogxK
U2 - 10.1016/j.seppur.2012.02.014
DO - 10.1016/j.seppur.2012.02.014
M3 - Article
AN - SCOPUS:84857984175
SN - 1383-5866
VL - 90
SP - 69
EP - 82
JO - Separation and Purification Technology
JF - Separation and Purification Technology
ER -