Visible-light-driven NaTaO{sub 3-x}N{sub x} catalyst prepared by a hydrothermal process
- Department of Chemistry, Tsinghua University, Beijing 100084 (China)
- Department of Environment Science and Engineering, Fudan University, Shanghai 200433 (China)
NaTaO{sub 3-x}N{sub x} catalyst has been successfully synthesized from N-doped Ta{sub 2}O{sub 5} precursors by a simple hydrothermal process. The as-prepared samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. Density functional theory calculations suggested that the valence band of the catalysts was composed of the hybrid O 2p and N 2p orbitals, and the visible-light sensitivity is due to the narrowing of the band gap by mixing N 2p and O 2p states. NaTaO{sub 3-x}N{sub x} catalyst could decompose the gaseous formaldehyde under the visible-light irradiation ({lambda} > 400 nm), and its photocatalytic activity depended on N dopant concentration. NaTaO{sub 2.943}N{sub 0.047} showed the highest photoactivity for the formaldehyde photodegradation.
- OSTI ID:
- 21068238
- Journal Information:
- Materials Research Bulletin, Vol. 43, Issue 4; Other Information: DOI: 10.1016/j.materresbull.2007.05.013; PII: S0025-5408(07)00199-7; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
TiO{sub 2}/N-graphene nanocomposite via a facile in-situ hydrothermal sol–gel strategy for visible light photodegradation of eosin Y
g-C{sub 3}N{sub 4}/NaTaO{sub 3} organic–inorganic hybrid nanocomposite: High-performance and recyclable visible light driven photocatalyst