Strong Photon Energy Dependence of the Photocatalytic Dissociation Rate of Methanol on TiO2(110)
文献类型：期刊论文
| 作者 | Xu, Chengbiao1; Yang, Wenshao1; Ren, Zefeng3; Dai, Dongxu1; Guo, Qing1; Minton, Timothy K.1,2; Yang, Xueming1 |
| 刊名 | journal of the american chemical society
 |
| 出版日期 | 2013-12-18 |
| 卷号 | 135期号:50页码:19039-19045 |
| 产权排序 | 待补充 |
| 通讯作者 | 郭庆 ; timothy k. minton ; 杨学明 |
| 合作状况 | 英 |
| 英文摘要 | photocatalytic dissociation of methanol (ch3oh) on a tio2(110) surface has been studied by temperature programmed desorption (tpd) at 355 and 266 nm. primary dissociation products, ch2o and h atoms, have been detected. the dependence of the reactant and product tpd signals on irradiation time has been measured, allowing the photocatalytic reaction rate of ch3oh at both wavelengths to be directly determined. the initial dissociation rate of ch3oh at 266 nm is nearly 2 orders of magnitude faster than that at 355 nm, suggesting that ch3oh photocatalysis is strongly dependent on photon energy. this experimental result raises doubt about the widely accepted photocatalysis model on tio2, which assumes that the excess potential energy of charge carriers is lost to the lattice via strong coupling with phonon modes by very fast thermalization and the reaction of the adsorbate is thus only dependent on the number of electron-hole pairs created by photoexcitation. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | rutile tio2(110) ; surface science ; tio2 surfaces ; water ; adsorption ; oxidation ; alcohols ; oxygen ; photochemistry ; wavelength |
| 收录类别 | SCI |
| 资助信息 | 1，1 |
| 原文出处 | 19045 |
| 语种 | 英语 |
| WOS记录号 | WOS:000328865100052 |
| 公开日期 | 2014-09-11 |
| 源URL | [http://159.226.238.44/handle/321008/119475]  |
| 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 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 2.Montana State Univ, Dept Chem & Biochem, Bozeman, MT 59717 USA 3.Peking Univ, Int Ctr Quantum Mat, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Chengbiao,Yang, Wenshao,Ren, Zefeng,et al. Strong Photon Energy Dependence of the Photocatalytic Dissociation Rate of Methanol on TiO2(110)[J]. journal of the american chemical society,2013,135(50):19039-19045. |
| APA | Xu, Chengbiao.,Yang, Wenshao.,Ren, Zefeng.,Dai, Dongxu.,Guo, Qing.,...&Yang, Xueming.(2013).Strong Photon Energy Dependence of the Photocatalytic Dissociation Rate of Methanol on TiO2(110).journal of the american chemical society,135(50),19039-19045. |
| MLA | Xu, Chengbiao,et al."Strong Photon Energy Dependence of the Photocatalytic Dissociation Rate of Methanol on TiO2(110)".journal of the american chemical society 135.50(2013):19039-19045. |
入库方式： OAI收割
来源：大连化学物理研究所
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