Microscopic evidence for the dissociation of water molecules on cleaved GaN(11[combining macron]00)

Microscopic evidence for the dissociation of water molecules on cleaved GaN(11[combining macron]00)

The dissociation of water molecules absorbed on a cleaved non-polar GaN(11[combining macron]00) surface was studied primarily with synchrotron-based photoemission spectra and density-functional-theory calculations. The adsorbed water molecules are spontaneously dissociated into hydrogen atoms and hy...

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Veröffentlicht in:Physical chemistry chemical physics : PCCP 2018, Vol.20 (2), p.1261-1266
Hauptverfasser: Wu, Shih-Yu, Lang, Liang-Wei, Cai, Pei-Yang, Chen, Yun-Wen, Lai, Yu-Ling, Lin, Ming-Wei, Hsu, Yao-Jane, Lee, Wei-I, Kuo, Jer-Lai, Luo, Meng-Fan, Kuo, Chien-Cheng
Format: Artikel
Sprache:eng
Schlagworte:
Energy of dissociation
Gallium nitrides
Hydrogen atoms
Hydrogen production
Hydroxyl groups
Photoelectric emission
Water chemistry
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Zusammenfassung:The dissociation of water molecules absorbed on a cleaved non-polar GaN(11[combining macron]00) surface was studied primarily with synchrotron-based photoemission spectra and density-functional-theory calculations. The adsorbed water molecules are spontaneously dissociated into hydrogen atoms and hydroxyl groups at either 300 or 130 K, which implies a negligible activation energy (
ISSN:1463-9076
1463-9084
DOI:10.1039/c7cp07728a