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Nickel-Oxide-Modified SrTiO 3 (110)-(4 × 1) Surfaces and Their Interaction with Water.
- Source :
-
The journal of physical chemistry. C, Nanomaterials and interfaces [J Phys Chem C Nanomater Interfaces] 2015 Sep 03; Vol. 119 (35), pp. 20481-20487. Date of Electronic Publication: 2015 Aug 12. - Publication Year :
- 2015
-
Abstract
- Nickel oxide (NiO), deposited onto the strontium titanate (SrTiO <subscript>3</subscript> ) (110)-(4 × 1) surface, was studied using photoemission spectroscopy (PES), X-ray absorption near edge structure (XANES), and low-energy He <superscript>+</superscript> ion scattering (LEIS), as well as scanning tunneling microscopy (STM). The main motivation for studying this system comes from the prominent role it plays in photocatalysis. The (4 × 1) reconstructed SrTiO <subscript>3</subscript> (110) surface was previously found to be remarkably inert toward water adsorption under ultrahigh-vacuum conditions. Nickel oxide grows on this surface as patches without any apparent ordered structure. PES and LEIS reveal an upward band bending, a reduction of the band gap, and reactivity toward water adsorption upon deposition of NiO. Spectroscopic results are discussed with respect to the enhanced reactivity toward water of the NiO-loaded surface.
Details
- Language :
- English
- ISSN :
- 1932-7447
- Volume :
- 119
- Issue :
- 35
- Database :
- MEDLINE
- Journal :
- The journal of physical chemistry. C, Nanomaterials and interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 26617682
- Full Text :
- https://doi.org/10.1021/acs.jpcc.5b06144