<P>Well defined, ordered arrays of hybrid Ag/TiO<SUB>2</SUB> hetero nanodots were fabricated on solid substrates using amphiphilic poly(styrene-block-ethylene oxide) diblock copolymer (PS-<I>b</I>-PEO) micelles loaded wit...
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https://www.riss.kr/link?id=A107752897
2009
-
SCOPUS,SCIE
학술저널
2431-2436(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>Well defined, ordered arrays of hybrid Ag/TiO<SUB>2</SUB> hetero nanodots were fabricated on solid substrates using amphiphilic poly(styrene-block-ethylene oxide) diblock copolymer (PS-<I>b</I>-PEO) micelles loaded wit...
<P>Well defined, ordered arrays of hybrid Ag/TiO<SUB>2</SUB> hetero nanodots were fabricated on solid substrates using amphiphilic poly(styrene-block-ethylene oxide) diblock copolymer (PS-<I>b</I>-PEO) micelles loaded with AgNO<SUB>3</SUB> and TiO<SUB>2</SUB> sol–gel precursors as templates. The inorganic precursors were selectively incorporated into PEO domains due to specific chemical affinity. The conversion of AgNO<SUB>3</SUB> 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/TiO<SUB>2</SUB> 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/TiO<SUB>2</SUB> nanodot arrays compared with pure TiO<SUB>2</SUB> NP arrays.</P> <P>Graphic Abstract</P><P>A facile route to fabricate hybrid TiO<SUB>2</SUB>/Ag nanodot arrays, a promising photocatalytic thin film, utilising cooperative self assembly of a block copolymer and sol–gel precursors is demonstrated.
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