期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 314, 期 1, 页码 341-345出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2007.05.011
关键词
superhydrophilic; antifogging; raspberry-like silica nanospheres; polyelectrolytes; self-assembly
Raspberry-like silica nanospheres were prepared by electrostatic self-assembly of polyelectrolytes and monodisperse silica nanoparticles of two different sizes, and their coatings were fabricated via layer-by-layer assembly with polyelectrolytes and following calcination. The morphology of the raspberry-like silica nanospheres and their coatings were observed by scanning and transmission electron microscopies. The surface properties of these coatings were investigated by measuring their water contact angles, and the results showed that such hierarchically structured coatings had unique superhydrophilic and antifogging properties. Finally, the formation mechanism and the property-structure relationship were discussed in details. (C) 2007 Elsevier Inc. All rights reserved.
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