Synthesis of TiO2(110) ultra-thin films on W(100) and their reactions with H2O
Synthesis of TiO2(110) ultra-thin films on W(100) and their reactions with H2O
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DOI：
10.1016/j.susc.2013.05.020
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发表时间：
2013-10-01
期刊：
影响因子：
1.9
通讯作者：
Thornton, G.
中科院分区：
文献类型：
--
作者：
Matharu, J.;Cabailh, G.;Thornton, G.
本文研究了在W（100）衬底上生长的TiO_2超薄膜的生长和反应性。薄膜生长的三种方法进行了研究，每一种方法都导致薄膜在低能衍射（LEED）中显示出有序性，在X射线光电子能谱（XPS）中显示出低水平的非化学计量比。H2O被用作探针的薄膜的反应性，与Ti 2p和O 1s的核心水平的变化被监测通过XPS。提出了H2O在TiO2（110）超薄膜表面解离的证据。这些结果与有关自然二氧化钛（110）的研究进行了讨论。(C)2013 Elsevier B.V.保留所有权利。
We present a study of the growth and reactivity of ultra-thin films of TiO2 grown on W(100). Three approaches to film growth are investigated, each resulting in films that show order in low-energy diffraction (LEED) and a low level of non-stoichiometry in X-ray photoelectron spectroscopy (XPS). H2O is used as a probe of the reactivity of the films, with changes in the Ti 2p and O 1s core levels being monitored by XPS. Evidence for the dissociation of H2O on the TiO2(110) ultra-thin film surface is adduced. These results are discussed with reference to related studies on native TiO2(110). (C) 2013 Elsevier B.V. All rights reserved.