Preparation of fine, uniform nitrogen- and sulfur-modified TiO2 nanoparticles from titania nanotubes
TiO2 nanoparticles modified with nitrogen and sulfur were prepared from titania nanotubes by a facile wet chemistry method. The samples synthesized with different thiourea/TiO2 ratios showed a uniform nanoparticle size distribution centred at approximately 10 nm with a developed specific surface are...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2010-01-01
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| Series: | Science and Technology of Advanced Materials |
| Online Access: | http://iopscience.iop.org/1468-6996/11/5/055001 |
| Summary: | TiO2 nanoparticles modified with nitrogen and sulfur were prepared from titania nanotubes by a facile wet chemistry method. The samples synthesized with different thiourea/TiO2 ratios showed a uniform nanoparticle size distribution centred at approximately 10 nm with a developed specific surface area of 246 m2 g-1. These modified nanosized photocatalysts exhibited higher photocatalytic activity for the degradation of gaseous isopropanol than unmodified titania nanotubes under visible illumination. This could be attributed to the synergistic effects of a large specific surface area, strong absorption in the visible region, a redshift in the adsorption edge, and surface adsorption modification induced by nitrogen and sulfur compounds. |
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| ISSN: | 1468-6996 1878-5514 |