On the synergistic coupling properties of composite CdS/TiO2 nanoparticle arrays confined in nanopatterned hybrid thin films
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SCOPUS
- Title
- On the synergistic coupling properties of composite CdS/TiO2 nanoparticle arrays confined in nanopatterned hybrid thin films
- Authors
- Kannaiyan, D; Kim, E; Won, N; Kim, KW; Jang, YH; Cha, MA; Ryu, DY; Kim, S; Kim, DH
- Date Issued
- 2010-01
- Publisher
- ROYAL SOC CHEMISTRY
- Abstract
- Two-dimensional (2D) arrays of hybrid CdS/TiO2 composite nanodots were fabricated on solid substrates using amphiphilic poly(styrene-block-ethylene oxide) diblock copolymer (PS-b-PEO) micelles as templates loaded with CdS nanoparticles (NPs) and TiO2 sol-gel precursors. The inorganic precursors were selectively incorporated into PEO domains of PS-b-PEO due to the specific interactions. The addition of CdS quantum dots (QDs) into thin films of the PS-b-PEO/TiO2 sol-gel mixture led to the morphological changes from mixed wire/hexagonal dot to well-defined, quasi-hexagonal dot arrays. The PS-b-PEO/TiO2/CdS system showed an enhanced absorption along with red shift behavior in the UV-visible spectral range compared with the PS-b-PEO/TiO2 films. Photoluminescence (PL) studies showed a quenching of CdS emission in the presence of TiO2. An enhanced photocatalytic degradation of methylene blue (MB) was observed in the hybrid PS-b-PEO/TiO2/CdS thin film.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10933
- DOI
- 10.1039/B917858A
- ISSN
- 0959-9428
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, vol. 20, no. 4, page. 677 - 682, 2010-01
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