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- W2946376633 abstract "In this work, starting from the general theory of sum-frequency generation (SFG), we proposed a computational strategy utilizing density functional theory with periodic boundary conditions to simulate the vibrational SFG of molecules/solid surface adsorption system. The method has been applied to the CH3OH/TiO2(110) system successfully. Compared with the isolated molecule model, our theoretical calculations showed that the TiO2 substrate can significantly alter the second-order susceptibilities of a methanol molecule which is directly related to the SFG intensity. In addition, the SFG spectra have obvious changes while the methanol coverage increases, especially for the OH vibration peaks. Our theoretical spectra agree reasonably well with experimental measurements at 1 ML coverage, and an interesting peak which is absent in the theoretical spectra is tentatively assigned to some CH3 stretch vibration of methanol adsorbed on the oxygen vacancy of TiO2." @default.
- W2946376633 created "2019-05-29" @default.
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- W2946376633 date "2019-05-13" @default.
- W2946376633 modified "2023-09-23" @default.
- W2946376633 title "First-principles study on sum-frequency generation spectroscopy of methanol adsorbed on TiO2(110) surface: Effects of substrate and molecular coverages" @default.
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- W2946376633 doi "https://doi.org/10.1063/1.5088885" @default.
- W2946376633 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31091896" @default.
- W2946376633 hasPublicationYear "2019" @default.
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