Photodegradation of 2-Naphthalenesulfonate in Aqueous Catalyzed by N-Doped TiO₂ under Irradiation of Simulated Solarlight

Abstract:

N/TiO₂ photocatalyst was synthesized by modified sol–gel method and characterized by XRD, XPS and DRS. The photoactivity of N/TiO₂ were evaluated by the degradation of 2-naphthalenesulfonate (2-NS) under different light sources. The results showed that nitrogen doping may cause band gap narrowing of TiO₂, and therefore increase the photocatalytivity of N/TiO₂ under visible-light. The average particle size of the N/TiO₂ synthesized is about 10 nm, and the N/TiO₂ contains 100% anatase phase of TiO₂. The dopant is found mainly to be NOx and the doping concentration in NT is 1.30%. The NT shows very high efficiency for the catalysis of the degradation of 2-NS. The degradation efficiency of 2-NS using NT under visible light for 5 h is 47.29%, much higher than 2.5% of the pure TiO₂.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 471-475
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.471
• Online since: October 2011
• Authors: Guo Qing Liu, Le Chen, Yu Ping Wang, Pan Ying Peng
• Keywords: 2-Naphthalenesulfonate, N-Doped TiO₂, Photocatalytic, Urea, Visible Light

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