Abstract
The dissociation of water molecules absorbed on a cleaved non-polar GaN(1100) 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(1100) respectively. These results highlight the promising applications of the non-polar GaN(1100) surface in water dissociation and hydrogen generation.
Original language | American English |
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Pages (from-to) | 1261-1266 |
Number of pages | 6 |
Journal | Physical Chemistry Chemical Physics |
Volume | 20 |
Issue number | 2 |
DOIs | |
State | Published - 1 Jan 2018 |