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题名: Photo-Induced Reaction of Ethene Bound to Vanadia Nanoparticles [(V2O5)(n)OC2H4- (n=2-20)] in the Gas Phase
作者: Liu, Qing-Yu1, 2; Yuan, Zhen1, 2; Zhao, Yan-Xia1; He, Sheng-Gui1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2016-08-04
卷: 120, 期:30, 页:17081-17086
收录类别: SCI
英文摘要: Photoinduced reactions of ethene (C2H4) bound to vanadium oxide nanoparticles (V2O5)nO(-) (n = 2-20) have been studied via a high-resolution tandem time-of-flight mass spectrometer coupled with a nanosecond ultraviolet laser system. Two major reaction channels, C2H4O2 elimination and photoelectron detachment, have been observed for all the examined cluster systems. As the cluster size increases, the efficiency of photoreaction increases. Kinetic analysis demonstrates that the C2H4O2 is generated by a single-photon absorption process (V2O5)nOC(2)H(4) + hv (first photon) -> (V2O5)(n-1)V2O4 + C2H4O2, which is followed by the photoelectron detachment (V2O5)(n-1)V2O4- + hv (second photon) -> (V2O5)(n-1)V2O4 + e(-). The fast dissociation to generate C2H4O2 within about 5 ns after absorption of a single photon demonstrates that the electron instead of phonon should be the energy carrier for photoreaction on the studied semiconducting nanoparticles as large as V40O101 (diameter around 1.5 nm).
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35283
Appears in Collections:分子动态与稳态结构实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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