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https://hdl.handle.net/10356/95829
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DC Field | Value | Language |
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dc.contributor.author | Schreyer, Martin K. | en |
dc.contributor.author | Cheng, Yu Hua | en |
dc.contributor.author | Subramaniam, Vishnu-Priya | en |
dc.contributor.author | Gong, Dangguo | en |
dc.contributor.author | Tang, Yuxin | en |
dc.contributor.author | Highfield, James | en |
dc.contributor.author | Pehkonen, Simo Olavi | en |
dc.contributor.author | Pichat, Pierre | en |
dc.contributor.author | Chen, Zhong | en |
dc.date.accessioned | 2013-07-12T02:56:28Z | en |
dc.date.accessioned | 2019-12-06T19:22:06Z | - |
dc.date.available | 2013-07-12T02:56:28Z | en |
dc.date.available | 2019-12-06T19:22:06Z | - |
dc.date.copyright | 2012 | en |
dc.date.issued | 2012 | en |
dc.identifier.citation | Cheng, Y. H., Subramaniam, V.-P., Gong, D., Tang, Y., Highfield, J., Pehkonen, S. O., et al. (2012). Nitrogen-sensitized dual phase titanate/titania for visible-light driven phenol degradation. Journal of solid state chemistry, 196, 518-527. | en |
dc.identifier.issn | 0022-4596 | en |
dc.identifier.uri | https://hdl.handle.net/10356/95829 | - |
dc.description.abstract | A dual-phase material (DP-160) comprising hydrated titanate (H2Ti3O7·xH2O) and anatase (TiO2) was synthesized in a low-temperature one-pot process in the presence of triethylamine (TEA) as the N-source. The unique structure exhibits strong visible light absorption. The chromophore is linked to Ti–N bonds derived from both surface sensitization and sub-surface (bulk) doping. From transmission electron microscope (TEM) and textural studies by N2 physisorption, the composite exists as mesoporous particles with a grain size of ∼20 nm and mean pore diameter of 3.5 nm, responsible for the high surface area (∼180 m2/g). DP-160 demonstrated photocatalytic activity in the degradation of phenol under visible light (λ>420 nm). The activity of the composite was further enhanced by a small addition (0.001 M) of H2O2, which also gave rise to some visible light activity in the control samples. This effect is believed to be associated with the surface peroxo-titanate complex. GC–MS analyses showed that the intermediate products of phenol degradation induced by visible light irradiation of DP-160 did not differ from those obtained by UV (band-gap) irradiation of TiO2. The overall performance of the composite is attributed to efficient excitation via inter-band states (due to N-doping), surface sensitization, improved adsorptive properties of aromatic compounds due to the N-carbonaceous overlayer, and the presence of heterojunctions that are known to promote directional charge transfer in other mixed-phase titanias like Degussa P25. | en |
dc.language.iso | en | en |
dc.relation.ispartofseries | Journal of solid state chemistry | en |
dc.rights | © 2012 Elsevier Inc. | en |
dc.title | Nitrogen-sensitized dual phase titanate/titania for visible-light driven phenol degradation | en |
dc.type | Journal Article | en |
dc.contributor.school | School of Materials Science & Engineering | en |
dc.identifier.doi | 10.1016/j.jssc.2012.07.011 | en |
item.fulltext | No Fulltext | - |
item.grantfulltext | none | - |
Appears in Collections: | MSE Journal Articles |
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