Layer-by-Layer Structured Nanofiber Membranes with Photoinduced Self-Cleaning Functions
作者：Dong Wang,?,? Ning Liu,? Weilin Xu,? and Gang Sun*
關(guān)鍵字：Photoinduced Self-Cleaning
論文來源：期刊
發(fā)表時間：2011年
A series of organic chemicals capable of generating
radicals under photoexposure, such as 2-anthraquinone
sulfonate (2-AQS), 2,6-AQS, and 2,7-AQS, have been layerby-
layer (LBL) assembled onto the hydrophilic poly(vinyl
alcohol-co-ethylene) (PVA-co-PE) nanofiber composite membranes.
The composite nanofiber membranes assembled with
AQS chemicals have demonstrated excellent photoinduced selfcleaning
properties by decolorizing colorants and killing bacteria.
Scanning electron microscopy (SEM) images showed that
the nanofibrous membranes maintained the well-defined fiber
morphology and large specific surface area after LBL assembly. The effects of AQS types, the compositions of PVA-co-PE, as well as
the number of AQS layers on the decolorization property were studied. The PVA-co-PE (44% ethylene unit) nanofiber membrane
assembled with one layer of 2,6-AQS was able to provide expected photoinduced self-cleaning properties, and the system could be a
promising candidate of self-cleaning protective clothing materials.