Jump to main content
Jump to site search

Issue 2, 2018
Previous Article Next Article

Microscopic evidence for the dissociation of water molecules on cleaved GaN(1[1 with combining macron]00)

Author affiliations

Abstract

The dissociation of water molecules absorbed on a cleaved non-polar GaN(1[1 with 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 (<11 meV) for the dissociation. The produced H and OH were bound to the surface nitrogen and gallium on GaN(1[1 with combining macron]00) respectively. These results highlight the promising applications of the non-polar GaN(1[1 with combining macron]00) surface in water dissociation and hydrogen generation.

Graphical abstract: Microscopic evidence for the dissociation of water molecules on cleaved GaN(1 [[1 with combining macron]] 00)

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 Nov 2017, accepted on 06 Dec 2017 and first published on 06 Dec 2017


Article type: Paper
DOI: 10.1039/C7CP07728A
Citation: Phys. Chem. Chem. Phys., 2018,20, 1261-1266
  •   Request permissions

    Microscopic evidence for the dissociation of water molecules on cleaved GaN(1[1 with combining macron]00)

    S. Wu, L. Lang, P. Cai, Y. Chen, Y. Lai, M. Lin, Y. Hsu, W. Lee, J. Kuo, M. Luo and C. Kuo, Phys. Chem. Chem. Phys., 2018, 20, 1261
    DOI: 10.1039/C7CP07728A

Search articles by author

Spotlight

Advertisements