| The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO(2) | |
| G. Liu; X. W. Wang; Z. G. Chen; H. M. Cheng; G. Q. Lu | |
| 2009 | |
| Source Publication | Journal of Colloid and Interface Science
 |
| ISSN | 0021-9797 |
| Volume | 329Issue:2Pages:331-338 |
| Abstract | Two series of nitrogen doped TiO(2) samples with different ratios of anatase to rutile phases were prepared by milling the mixture of P25 TiO(2) and C(6)H(12)N(4) in air and gaseous NH(3) atmosphere, respectively. Compared to air, NH(3) atmosphere plays an important role in delaying the crystallite transformation from anatase to rutile in the mechanochemical reaction of TiO(2) and C(6)H(12)N(4). In contrast to the previously reported results for pure TiO(2), it is found that nitrogen doped TiO(2) with higher content of rutile phase demonstrates higher photocatalytic activity in photodegrading pollutant Rhodamine B under both UV light and visible light irradiation (lambda > 420 nm), and the amount of the surface-adsorbed water and hydroxyl groups on nitrogen doped TiO(2) have little correlations with their crystallite phases (anatase or rutile) and photocatalytic activity. The more abundant surface states characterized by photoluminescence spectroscopy together with the lowered valence band maximum of rutile TiO(2) by nitrogen doping are considered as the key factors for the higher activity of nitrogen doped TiO(2) with higher content of rutile phase. (C) 2008 Elsevier Inc. All rights reserved. |
| description.department | [liu, gang; wang, xuewen; chen, zhigang; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [liu, gang; lu, gao qing (max)] univ queensland, sch engn, arc ctr excellence funct nanomat, brisbane, qld 4072, australia. [liu, gang; lu, gao qing (max)] univ queensland, australian inst bioengn & nanotechnol, brisbane, qld 4072, australia.;cheng, hm (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn maxlu@uq.edu.au |
| Keyword | Tio(2) Anatase Rutile Nitrogen Doping Crystal Phase Visible-light Photocatalysis Titanium-dioxide Band-gap Photoelectrochemical Properties Mechanochemical Reaction Nanocrystalline Tio2 Thermal-treatment Rutile Particles Surface Science Mesoporous Tio2 |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/32083 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | G. Liu,X. W. Wang,Z. G. Chen,et al. The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO(2)[J]. Journal of Colloid and Interface Science,2009,329(2):331-338. |
| APA | G. Liu,X. W. Wang,Z. G. Chen,H. M. Cheng,&G. Q. Lu.(2009).The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO(2).Journal of Colloid and Interface Science,329(2),331-338. |
| MLA | G. Liu,et al."The role of crystal phase in determining photocatalytic activity of nitrogen doped TiO(2)".Journal of Colloid and Interface Science 329.2(2009):331-338. |
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