View : 26 Download: 0

Efficient photocatalytic hybrid Ag/TiO2 nanodot arrays integrated into nanopatterned block copolymer thin films

Title
Efficient photocatalytic hybrid Ag/TiO2 nanodot arrays integrated into nanopatterned block copolymer thin films
Authors
Kannaiyan D.Cha M.-A.Jang Y.H.Sohn B.-H.Huh J.Park C.Kim D.H.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2009
Journal Title
New Journal of Chemistry
ISSN
1144-0546JCR Link
Citation
vol. 33, no. 12, pp. 2431 - 2436
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Well defined, ordered arrays of hybrid Ag/TiO2 hetero nanodots were fabricated on solid substrates using amphiphilic poly(styrene-block- ethylene oxide) diblock copolymer (PS-b-PEO) micelles loaded with AgNO 3 and TiO2 sol-gel precursors as templates. The inorganic precursors were selectively incorporated into PEO domains due to specific chemical affinity. The conversion of AgNO3 to metallic Ag was induced by UV irradiation and confirmed by the presence of a surface plasmon band in the UV-vis absorbance spectra. The organic matrix has been removed by deep UV irradiation, leading to arrays of Ag/TiO2 composite nanoparticles (NPs). The morphology and photocatalytic activities of the resulting hybrid nanoparticle arrays were studied. Markedly enhanced photocatalytic degradation of methylene blue has been observed for Ag/TiO2 nanodot arrays compared with pure TiO2 NP arrays. © 2009 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
DOI
10.1039/b9nj00245f
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE