1D Hydrogen Bond Chain on Pt(211) Stepped Surface Observed by O K-NEXAFS Spectroscopy
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- 作者：Osamu Endo ; Masashi Nakamura ; Ryouhei Sumii ; Kenta Amemiya
- 刊名：The Journal of Physical Chemistry C
- 出版年：2012
- 出版时间：July 5, 2012
- 年：2012
- 卷：116
- 期：26
- 页码：13980-13984
- 全文大小：337K
- 年卷期：v.116,no.26(July 5, 2012)
- ISSN：1932-7455
文摘
1D hydrogen bond chains of D2O molecules formed on a Pt(211) stepped surface are observed by polarization dependent near O K-edge X-ray absorption fine structure spectroscopy (O K-NEXAFS). The 1s鈫?蟽*OD resonance at 535.0 eV in the normal incidence O K-NEXAFS spectrum corresponds to the free OD bond oriented perpendicularly to the step lines, and the resonance at 540.0 eV is related to the hydrogen bond extended in a zigzag manner parallel to the step lines. A structural model consistent with these observations is obtained from the DFT optimization, in which all of the molecules act as one hydrogen donor and acceptor in the 1D chain.