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Article: The influence of cobalt doping on photocatalytic nano-titania: crystal chemistry and amorphicity
Title | The influence of cobalt doping on photocatalytic nano-titania: crystal chemistry and amorphicity |
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Authors | |
Keywords | Amorphous Content Anatase Formic Acid Methylene Blue Photocatalytic Activity Rutile |
Issue Date | 2007 |
Publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jssc |
Citation | Journal of Solid State Chemistry, 2007, v. 180 n. 10, p. 2905-2915 How to Cite? |
Abstract | Photocatalysts of nominal composition (Ti1-xCox)O2-δ with 0.001≤x≤0.05 were prepared via a sol-gel technique followed by air firing (200-1000 °C). The incorporation of cobalt inhibited crystal growth and slightly raised the anatase to rutile transformation temperature (∼700 °C). An amorphous component was invariably significant with the maximum content (41-53 wt%) appearing simultaneously with the removal of anatase, suggesting that rutile crystallizes via an aperiodic structure. While the introduction of cobalt shifted the apparent band gap to visible light energies this did not enhance performance as there was limited miscibility of cobalt in titania, non-catalytic secondary phases were present, and active Ti3+ sites were displaced by cobalt. © 2007 Elsevier Inc. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/150426 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 0.600 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Lim, SH | en_US |
dc.contributor.author | Ferraris, C | en_US |
dc.contributor.author | Schreyer, M | en_US |
dc.contributor.author | Shih, K | en_US |
dc.contributor.author | Leckie, JO | en_US |
dc.contributor.author | White, TJ | en_US |
dc.date.accessioned | 2012-06-26T06:04:39Z | - |
dc.date.available | 2012-06-26T06:04:39Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.citation | Journal of Solid State Chemistry, 2007, v. 180 n. 10, p. 2905-2915 | en_US |
dc.identifier.issn | 0022-4596 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/150426 | - |
dc.description.abstract | Photocatalysts of nominal composition (Ti1-xCox)O2-δ with 0.001≤x≤0.05 were prepared via a sol-gel technique followed by air firing (200-1000 °C). The incorporation of cobalt inhibited crystal growth and slightly raised the anatase to rutile transformation temperature (∼700 °C). An amorphous component was invariably significant with the maximum content (41-53 wt%) appearing simultaneously with the removal of anatase, suggesting that rutile crystallizes via an aperiodic structure. While the introduction of cobalt shifted the apparent band gap to visible light energies this did not enhance performance as there was limited miscibility of cobalt in titania, non-catalytic secondary phases were present, and active Ti3+ sites were displaced by cobalt. © 2007 Elsevier Inc. All rights reserved. | en_US |
dc.language | eng | en_US |
dc.publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jssc | en_US |
dc.relation.ispartof | Journal of Solid State Chemistry | en_US |
dc.subject | Amorphous Content | en_US |
dc.subject | Anatase | en_US |
dc.subject | Formic Acid | en_US |
dc.subject | Methylene Blue | en_US |
dc.subject | Photocatalytic Activity | en_US |
dc.subject | Rutile | en_US |
dc.title | The influence of cobalt doping on photocatalytic nano-titania: crystal chemistry and amorphicity | en_US |
dc.type | Article | en_US |
dc.identifier.email | Shih, K: kshih@hkucc.hku.hk | en_US |
dc.identifier.authority | Shih, K=rp00167 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/j.jssc.2007.08.021 | en_US |
dc.identifier.scopus | eid_2-s2.0-35248874281 | en_US |
dc.identifier.hkuros | 148374 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-35248874281&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 180 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.spage | 2905 | en_US |
dc.identifier.epage | 2915 | en_US |
dc.identifier.isi | WOS:000251462100034 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Lim, SH=7404081018 | en_US |
dc.identifier.scopusauthorid | Ferraris, C=7005464365 | en_US |
dc.identifier.scopusauthorid | Schreyer, M=7003796484 | en_US |
dc.identifier.scopusauthorid | Shih, K=14072108900 | en_US |
dc.identifier.scopusauthorid | Leckie, JO=7006717360 | en_US |
dc.identifier.scopusauthorid | White, TJ=7402587158 | en_US |
dc.identifier.issnl | 0022-4596 | - |