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Titanium Dioxide: From Engineering to Applications
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Catalysts 2019, 9(2), 201; https://doi.org/10.3390/catal9020201

Titanium-Dioxide-Based Visible-Light-Sensitive Photocatalysis: Mechanistic Insight and Applications

Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan
Received: 15 January 2019 / Revised: 12 February 2019 / Accepted: 14 February 2019 / Published: 22 February 2019
(This article belongs to the Special Issue Emerging Trends in TiO2 Photocatalysis and Applications)
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Abstract

Titanium dioxide (TiO2) is one of the most practical and prevalent photo-functional materials. Many researchers have endeavored to design several types of visible-light-responsive photocatalysts. In particular, TiO2-based photocatalysts operating under visible light should be urgently designed and developed, in order to take advantage of the unlimited solar light available. Herein, we review recent advances of TiO2-based visible-light-sensitive photocatalysts, classified by the origins of charge separation photo-induced in (1) bulk impurity (N-doping), (2) hetero-junction of metal (Au NPs), and (3) interfacial surface complexes (ISC) and their related photocatalysts. These photocatalysts have demonstrated useful applications, such as photocatalytic mineralization of toxic agents in the polluted atmosphere and water, photocatalytic organic synthesis, and artificial photosynthesis. We wish to provide comprehension and enlightenment of modification strategies and mechanistic insight, and to inspire future work. View Full-Text
Keywords: Titanium dioxide (TiO2); visible-light-sensitive photocatalyst; N-doped TiO2; plasmonic Au NPs; interfacial surface complex (ISC); selective oxidation; decomposition of VOC; carbon nitride (C3N4); alkoxide; ligand to metal charge transfer (LMCT) Titanium dioxide (TiO2); visible-light-sensitive photocatalyst; N-doped TiO2; plasmonic Au NPs; interfacial surface complex (ISC); selective oxidation; decomposition of VOC; carbon nitride (C3N4); alkoxide; ligand to metal charge transfer (LMCT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Higashimoto, S. Titanium-Dioxide-Based Visible-Light-Sensitive Photocatalysis: Mechanistic Insight and Applications. Catalysts 2019, 9, 201.

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