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Trends in Chromatography   Volumes    Volume 11 
Flow injection analysis, gel filtration chromatography and transmission electron microscopy of titania nanoparticles: Polydopamine coating versus lecithin liposome encapsulation
Kaiyu Wang, Xuhao Zhao, Edward P. C. Lai
Pages: 49 - 59
Number of pages: 11
Trends in Chromatography
Volume 11 

Copyright © 2017 Research Trends. All rights reserved

A previous method by which titania (TiO2) nanoparticles in water could be encapsulated within lecithin liposomes was further investigated to determine whether polydopamine (PDA) coating was crucial to the encapsulation efficiency. Screening by flow injection analysis demonstrated the excellent homogeneity of PDA-TiO2 nanoparticles. Encapsulation of PDA-TiO2 nanoparticles at high concentrations by lecithin liposomes was validated by gel filtration chromatography with fluorescence detection. Transmission electron microscopy helped visualize the bimodal size distribution and morphology shape of the lecithin liposome-encapsulated PDA-TiO2 nanoparticles. These findings promise a cost effective technology for the removal of metal oxide nanoparticles in water treatment using ultrafiltration membranes with 0.1 μm pore size.
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