Nitrogen-doped titanium dioxide photocatalysts for visible response prepared by using organic compounds

By Y. Nosaka, Masami Matsushita, J. Nishino, A. Nosaka. 2005

294 citations recorded by the source corpus.

Abstract In order to utilize visible light in photocatalytic reactions, nitrogen atoms were doped in commercially available photocatalytic TiO2 powders by using an organic compound such as urea and guanidine. Analysis by X-ray photoelectron spectroscopy (XPS) indicated that N atoms were incorporated into two different sites of the bulk phase of TiO2. A significant shift of the absorption edge to a lower energy and a higher absorption in the visible light region were observed. These N-doped TiO2 powders exhibited photocatalytic activity for the decomposition of 2-propanol in aqueous solution under visible light irradiation. The photocatalytic activity increased with the decrease of doped N atoms in O site, while decreased with decrease of the other sites. Degradation of photocatalytic activity based on the release of nitrogen atoms was observed for the reaction in the aqueous suspension system.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/40176baa938dda4ef2e0991b63c41e7d2dde9e16

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Citations in the corpus

• Catalytic Degradation of Organic Dyes using Synthesized Silver Nanoparticles: A Green Approach (2015, background): “So, in the recent years have been many research efforts devoted to improve the photocatalytic activity by incorporating of metal particles (silver, gold and iron) [7-9], to broaden the absorption of solar radiations by doping with nitrogen and to reactivate the TiO2-based photo-catalysts by treating”