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Ordered mesoporous ...
Ordered mesoporous Ag-TiO2-KIT-6 heterostructure: synthesis, characterization and photocatalysis
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- Zhang, Fengling (författare)
- Fuzhou University
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- Zheng, Y. H. (författare)
- Monash University
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- Cao, Y. N. (författare)
- Fuzhou University
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- Chen, C. Q. (författare)
- Fuzhou University
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- Zhan, Y. Y. (författare)
- Fuzhou University
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- Lin, X. Y. (författare)
- Fuzhou University
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- Zheng, Q. (författare)
- Fuzhou University
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- Wei, K. M. (författare)
- Fuzhou University
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- Zhu, Jiefang, 1973 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2009
- 2009
- Engelska.
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Ingår i: Journal of Materials Chemistry. - : Royal Society of Chemistry (RSC). - 1364-5501 .- 0959-9428. ; 19:18, s. 2771-2777
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Ordered mesoporous Ag-TiO2-KIT-6 heterostructured nanocrystals were successfully synthesized by a template-based method, where a layer of TiO2 and Ag2O nanoparticles were deposited on cubic (Ia3d) silica (KIT-6) in an orderly manner; at the same time, the formed Ag2O nanoparticles were photolyzed to metallic Ag nanoparticles. Our results show that Ag-TiO2-KIT-6 is an ordered mesoporous composite material, which is composed of Ag-TiO2 heterostructures and the amorphous KIT-6 template. In addition, Ag-TiO2-KIT-6 possesses the highest photocatalytic activity among the as-synthesized photocatalysts, which can be attributed to the Ag-TiO2 heterojunctions and the excellent texture: (1) Ag-TiO2 heterojunctions improve the separation of photogenerated electron-hole pairs due to the potential energy differences between Ag and TiO2 nanocrystals, thus enhancing the photocatalytic activity; (2) the Ag-TiO2-KIT-6 sample possesses a high BET surface area and a large number of ordered pore channels, which facilitate adsorption and transportation of dye molecules, also leading to higher photocatalytic activity. It was also found that the Ag-TiO2 heterostructure plays a more important role in enhancing the photocatalytic activity than high BET surface area.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- property
- carbon nanotubes
- tio2 films
- silica
- silver nanoparticles
- template
- nanocatalyst
- frameworks
- nanorods
- nanocomposites
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Zhang, Fengling
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Zheng, Y. H.
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Cao, Y. N.
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Chen, C. Q.
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Zhan, Y. Y.
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Lin, X. Y.
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visa fler...
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Zheng, Q.
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Wei, K. M.
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Zhu, Jiefang, 19 ...
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Fysikalisk kemi
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Journal of Mater ...
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Chalmers tekniska högskola