Nitrogen doped anatase TiO2 sheets with dominant {001} facets for enhancing visible-light photocatalytic activity |
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| Affiliation: | 1. Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China;2. College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;1. Department of Chemistry, University of Zabol, P.O. Box 98615-538, Zabol, Islamic Republic of Iran;2. Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran;1. Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430081, China;2. Department of Mathematics and Information Sciences, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China;1. Faculty of Science, Fayoum University, 63514 Fayoum, Egypt;2. National Research University, MPEI, Krasnokazarmennaya 14, Moscow 111250, Russian Federation;3. Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Rd., Shanghai, 201203, China;1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China;2. School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, PR China;1. Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran;2. Department of Chemistry, University of Zabol, P. O. Box 98615-538, Zabol, Islamic Republic of Iran;1. Escuela Superior de Ingeniería Mecánica y Eléctrica Unidad Ticomán, Instituto Politécnico Nacional, 07340 México, D. F., México;2. CIDS-ICUAP, Benemérita Universidad Autónoma de Puebla, 14 sur y Avenida San Claudio, Edif. 137, 72570 Puebla, Pue., México |
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| Abstract: | The photocatalytic activity of TiO2 can be mainly improved from three approaches: (1) enhancing surface energy; (2) increasing availability of visible light and (3) improving the separation efficiency of photo-induced electrons and holes. Here, we report a one-step route to obtain nitrogen (N) doped TiO2 sheets with dominant {001} facets by a hydrothermal process. The XRD patterns confirm the better crystallinity. XPS spectrums show nitrogen acting as interstitial N or an O–Ti–N structure in TiO2 sheets. Compared with that of TiO2 sheets, the N doped TiO2 sheets not only absorb visible light, but also have a large percentage of high reactive {001} facets, so the photocatalytic activities are greatly enhanced, as confirmed by the decomposition of methylene orange. |
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| Keywords: | Dominant {001} facets Photocatalyst Hydrothermal synthetic method Ion doping |
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