Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)
文献类型：期刊论文
| 作者 | Wang, Zhi-qiang; Hao, Qun-qing; Zhou, Chuan-yao; Dai, Dong-xu; Yang, Xue-ming |
| 刊名 | chinese journal of chemical physics
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 28期号:4页码:459-464 |
| 关键词 | Titanium dioxide Photocatalysis Excitation wavelength dependence Temperature-programmed desorption |
| 英文摘要 | post-irradiation temperature-programmed desorption (tpd) has been used to study the photo catalyzed oxidation of methanol on tio2(110) surface under the irradiation of 360, 380 and 400 nm light. the photocatalytic process initiated by ultraviolet light of different wavelength are similar. methanol has been photocatalytically converted into formaldehyde, and the released hydrogen atoms transfer to the neighboring twofold coordinated oxygen to form bridging hydroxyls. the reaction rate, however, is strongly wavelength dependent. the reaction rate under 360 nm light irradiation is 4.8 times of that in the case of 400 nm exposure, consistent with a previous femtosecond time-resolved absorption measurement on tio2 which shows the faster charge carrier recombination in the near-band-gap than the over-band-gap excitation. so far, the underlying factors which govern the excitation wavelength dependence of photocatalytic activity of tio2 and other photocatalysts remain unclear, and future studies are needed to address this important issue. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | physics, atomic, molecular & chemical |
| 研究领域[WOS] | physics |
| 关键词[WOS] | molecular-hydrogen formation ; fractal reaction-kinetics ; titanium-dioxide ; surface science ; photon energy ; tio2 photocatalysis ; methyl formate ; adsorption ; water ; dissociation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000361418000013 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146548]  |
| 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 Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhi-qiang,Hao, Qun-qing,Zhou, Chuan-yao,et al. Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)[J]. chinese journal of chemical physics,2015,28(4):459-464. |
| APA | Wang, Zhi-qiang,Hao, Qun-qing,Zhou, Chuan-yao,Dai, Dong-xu,&Yang, Xue-ming.(2015).Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110).chinese journal of chemical physics,28(4),459-464. |
| MLA | Wang, Zhi-qiang,et al."Excitation Wavelength Dependence of Photocatalyzed Oxidation of Methanol on TiO2(110)".chinese journal of chemical physics 28.4(2015):459-464. |
入库方式： OAI收割
来源：大连化学物理研究所
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