 Visible-light-induced photocatalytic oxidation of nitric oxide and sulfur dioxide: Discrete kinetics and mechanismYinghui Han, Junjun Zhang and Yi Zhao Energy, 2016, vol. 103, issue C, 725-734 Abstract: A new photocatalyst was prepared using doped titanium dioxide (TiO2) with active species for the removal of nitric oxide (NO) and sulfur dioxide (SO2) under visible light irradiation. Nitrogen (N-), zirconium (Zr-), and nickel (Ni-) tridoped TiO2 was found to possess higher photocatalytic activity than single Ni-doping, single Zr-doping, bimetallic doping or un-doping TiO2. X-ray diffraction patterns and ultraviolet–visible spectra suggest that N-, Zr-, and Ni-tridoped TiO2 is a mixed-crystal structure that enhances absorption in the visible light region. Kinetic experiments on the removal of NO and SO2 by N-, Zr-, and Ni-tridoped TiO2 under visible light irradiation were carried out in a self-designed photocatalytic reactor respectively. The effects of various operation factors on the reaction rates were evaluated. The reaction rates were successfully expressed by Langmuir–Hinshelwood model. Based on ion chromatography analysis, a visible light induced photocatalytic removal mechanism has been proposed based on N-, Zr-, and Ni-tridoped mixed-crystal TiO2. Keywords: Photocatalysis; Visible light induction; Desulfurization; Denitration; Kinetics; Mechanism (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:103:y:2016:i:c:p:725-734 DOI: 10.1016/j.energy.2015.12.007 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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