Surface phases of TiO2 nanoparticles studied by UV Raman spectroscopy and FT-IR spectroscopy
文献类型：期刊论文
| 作者 | Su, Weiguang; Zhang, Jing; Feng, Zhaochi; Chen, Tao; Ying, Pinliang; Li, Can |
| 刊名 | journal of physical chemistry c
 |
| 出版日期 | 2008-05-22 |
| 卷号 | 112期号:20页码:7710-7716 |
| 产权排序 | 1;1 |
| 通讯作者 | 李灿 |
| 英文摘要 | surface phases of tio2 nanoparticles (30 similar to 200 nm) were studied by uv raman spectroscopy and ft-ir spectroscopy with co and co2 as probe molecules. uv raman spectroscopy can differentiate the surface phase structure of tio2 calcined at different temperatures. ir spectra of adsorbed co and co2 on tio2 calcined at different temperatures are in good agreement with the results from uv raman spectra. ir results evidently confirm that uv raman spectroscopy is a surface-sensitive technique for tio2. both uv raman and ir spectra indicate that the crystalline phase of tio2 in the surface region is usually different from that in the bulk which is characterized by xrd. co is weakly adsorbed on till ions of anatase phase but is hardly adsorbed on those of rutile phase at room temperature. adsorbed co2 on anatase phase produces mainly bidentate carbonate, while on rutile phase produces mainly bicarbonate species. these results suggest that the surface lewis acidity of anatase phase is stronger than that of rutile phase, and the concentration of cus ti4+-o2- pairs on the surface of anatase phase is much higher than that on rutile phase; however, the basicity of surface oh groups of rutile phase is stronger than that of anatase phase. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | metal-oxide surfaces ; carbon-monoxide ; titanium dioxides ; adsorption ; catalysts ; anatase ; transformation ; co ; photocatalysts ; zirconia |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000255905400033 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/101287]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Weiguang,Zhang, Jing,Feng, Zhaochi,et al. Surface phases of TiO2 nanoparticles studied by UV Raman spectroscopy and FT-IR spectroscopy[J]. journal of physical chemistry c,2008,112(20):7710-7716. |
| APA | Su, Weiguang,Zhang, Jing,Feng, Zhaochi,Chen, Tao,Ying, Pinliang,&Li, Can.(2008).Surface phases of TiO2 nanoparticles studied by UV Raman spectroscopy and FT-IR spectroscopy.journal of physical chemistry c,112(20),7710-7716. |
| MLA | Su, Weiguang,et al."Surface phases of TiO2 nanoparticles studied by UV Raman spectroscopy and FT-IR spectroscopy".journal of physical chemistry c 112.20(2008):7710-7716. |
入库方式： OAI收割
来源：大连化学物理研究所
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