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Surface phases of TiO2 nanoparticles studied by UV Raman spectroscopy and FT-IR spectroscopy
Su, Weiguang; Zhang, Jing; Feng, Zhaochi; Chen, Tao; Ying, Pinliang; Li, Can; Li C(李灿)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2008-05-22
DOI10.1021/jp7118422
112期:20页:7710-7716
收录类别SCI
文章类型Article
部门归属5
项目归属503
产权排名1;1
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
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.
语种英语
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WOS记录号WOS:000255905400033
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被引频次:161[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/101287
专题中国科学院大连化学物理研究所
通讯作者Li C(李灿)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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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.,...&李灿.(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.
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