A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications

Titanium dioxide (TiO<sub>2</sub>) is an excellent UV-photocatalytic material that is widely used in various applications, including clean energy production, environmental remediation, and chemical production. However, the use of TiO<sub>2</sub> is limited in the field of vis...

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Main Authors: Khan, Sovann, Park, Jin-Sung, Ishihara, Tatsumi
Other Authors: Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Format: Article
Published: Multidisciplinary Digital Publishing Institute 2023
Online Access:https://hdl.handle.net/1721.1/147603
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author Khan, Sovann
Park, Jin-Sung
Ishihara, Tatsumi
author2 Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
author_facet Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Khan, Sovann
Park, Jin-Sung
Ishihara, Tatsumi
author_sort Khan, Sovann
collection MIT
description Titanium dioxide (TiO<sub>2</sub>) is an excellent UV-photocatalytic material that is widely used in various applications, including clean energy production, environmental remediation, and chemical production. However, the use of TiO<sub>2</sub> is limited in the field of visible light photocatalysis due to its large bandgap and fast recombination rate between electron and hole pairs, which generally results in a low photocatalytic reaction. Defect/bandgap engineering by doping and the introduction of heterojunctions has been successfully employed to improve the photocatalytic activities of TiO<sub>2</sub> over a wide wavelength. To apply the unconventional structured TiO<sub>2</sub> with high photocatalytic performance to industries, the development of efficient methods for large-scale production is of high importance. Flame synthesis is a very promising method for the rapid production of nanoparticles. In this article, we summarize the latest reports on the synthesis of defective and heterostructured TiO<sub>2</sub> using the single-step method of flame synthesis. Fundamental understandings of reactor configurations, synthesis conditions, precursor preparation and their physicochemical properties are intensively discussed.
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spelling mit-1721.1/1476032023-01-21T03:01:22Z A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications Khan, Sovann Park, Jin-Sung Ishihara, Tatsumi Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Titanium dioxide (TiO<sub>2</sub>) is an excellent UV-photocatalytic material that is widely used in various applications, including clean energy production, environmental remediation, and chemical production. However, the use of TiO<sub>2</sub> is limited in the field of visible light photocatalysis due to its large bandgap and fast recombination rate between electron and hole pairs, which generally results in a low photocatalytic reaction. Defect/bandgap engineering by doping and the introduction of heterojunctions has been successfully employed to improve the photocatalytic activities of TiO<sub>2</sub> over a wide wavelength. To apply the unconventional structured TiO<sub>2</sub> with high photocatalytic performance to industries, the development of efficient methods for large-scale production is of high importance. Flame synthesis is a very promising method for the rapid production of nanoparticles. In this article, we summarize the latest reports on the synthesis of defective and heterostructured TiO<sub>2</sub> using the single-step method of flame synthesis. Fundamental understandings of reactor configurations, synthesis conditions, precursor preparation and their physicochemical properties are intensively discussed. 2023-01-20T15:49:47Z 2023-01-20T15:49:47Z 2023-01-13 2023-01-20T14:23:04Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/147603 Catalysts 13 (1): 196 (2023) PUBLISHER_CC http://dx.doi.org/10.3390/catal13010196 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ application/pdf Multidisciplinary Digital Publishing Institute Multidisciplinary Digital Publishing Institute
spellingShingle Khan, Sovann
Park, Jin-Sung
Ishihara, Tatsumi
A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title_full A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title_fullStr A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title_full_unstemmed A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title_short A Review of the Single-Step Flame Synthesis of Defective and Heterostructured TiO2 Nanoparticles for Photocatalytic Applications
title_sort review of the single step flame synthesis of defective and heterostructured tio2 nanoparticles for photocatalytic applications
url https://hdl.handle.net/1721.1/147603
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