標題: Microscopic evidence for the dissociation of water molecules on cleaved GaN(1(1)over bar00)
作者: 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
電子物理學系
Department of Electrophysics
公開日期: 14-Jan-2018
摘要: The dissociation of water molecules absorbed on a cleaved non-polar GaN(1(1)over bar00) 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)over bar00) respectively. These results highlight the promising applications of the non-polar GaN(1(1)over bar00) surface in water dissociation and hydrogen generation.
URI: http://dx.doi.org/10.1039/c7cp07728a
http://hdl.handle.net/11536/144321
ISSN: 1463-9076
DOI: 10.1039/c7cp07728a
期刊: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume: 20
起始頁: 1261
結束頁: 1266
Appears in Collections:Articles