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      TiO xN y Modified TiO 2 Powders Prepared by Plasma Enhanced Atomic Layer Deposition for Highly Visible Light Photocatalysis

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          Abstract

          In this work, TiN film deposited by plasma enhanced atomic layer deposition (PEALD) is adopted to modify the commercial anatase TiO 2 powders. A series of analyses indicate that the surface modification of 20, 50 and 100 cycles of TiN by PEALD does not change the morphology, crystal size, lattice parameters, and surface area of TiO 2 nano powders, but forms an ultrathin amorphous layer of nitrogen doped TiO 2 (TiO xN y) on the powder surfaces. This ultrathin TiO xN y can facilitate the absorption of TiO 2 in visible light spectrum. As a result, TiO xN y coated TiO 2 powders exhibit excellent photocatalytic degradation towards methyl orange under the visible light with good photocatalytic stability compared to pristine TiO 2 powders. TiO xN y (100 cycles PEALD TiN) coated TiO 2 powders exhibit the excellent photocatalytic activity with the degradation efficiency of 96.5% in 2 hours, much higher than that of pristine TiO 2 powder of only 4.4%. These results clearly demonstrate that only an ultrathin surface modification layer can dramatically improve the visible light photocatalytic activity of commercial TiO 2 powders. Therefore, this surface modification using ALD is an extremely promising route to prepare visible light active photocatalysts.

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          A review on the visible light active titanium dioxide photocatalysts for environmental applications

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            Nitrogen-Concentration Dependence on Photocatalytic Activity of TiO2-xNxPowders

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              Enhanced Nitrogen Doping in TiO2Nanoparticles

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                Author and article information

                Contributors
                adli@nju.edu.cn
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                14 August 2018
                14 August 2018
                2018
                : 8
                : 12131
                Affiliations
                ISNI 0000 0001 2314 964X, GRID grid.41156.37, National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, , Nanjing University, ; Nanjing, 210093 People’s Republic of China
                Author information
                http://orcid.org/0000-0003-3619-1411
                Article
                30726
                10.1038/s41598-018-30726-w
                6092356
                30108310
                fc72b9bc-355e-4eff-8be9-ccfde4cf343a
                © The Author(s) 2018

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 11 April 2018
                : 30 July 2018
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