The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures

Arghya Narayan BanerjeeSchool of Mechanical Engineering, Yeungnam University, Gyeongsan, South KoreaAbstract: Recent advances in basic fabrication techniques of TiO2-based nanomaterials such as nanoparticles, nanowires, nanoplatelets, and both physical- and solution-based techniques have been adopte...

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Autor principal:	Arghya Narayan Banerjee
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2011
Materias:	Medical technology R855-855.5 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/62a3589f20ce410b9aa2d24e17547206
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spelling	oai:doaj.org-article:62a3589f20ce410b9aa2d24e175472062021-12-02T07:06:53ZThe design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures1177-8903https://doaj.org/article/62a3589f20ce410b9aa2d24e175472062011-02-01T00:00:00Zhttp://www.dovepress.com/the-design-fabrication-and-photocatalytic-utility-of-nanostructured-se-a6327https://doaj.org/toc/1177-8903Arghya Narayan BanerjeeSchool of Mechanical Engineering, Yeungnam University, Gyeongsan, South KoreaAbstract: Recent advances in basic fabrication techniques of TiO2-based nanomaterials such as nanoparticles, nanowires, nanoplatelets, and both physical- and solution-based techniques have been adopted by various research groups around the world. Our research focus has been mainly on various deposition parameters used for fabricating nanostructured materials, including TiO2-organic/inorganic nanocomposite materials. Technically, TiO2 shows relatively high reactivity under ultraviolet light, the energy of which exceeds the band gap of TiO2. The development of photocatalysts exhibiting high reactivity under visible light allows the main part of the solar spectrum to be used. Visible light-activated TiO2 could be prepared by doping or sensitizing. As far as doping of TiO2 is concerned, in obtaining tailored material with improved properties, metal and nonmetal doping has been performed in the context of improved photoactivity. Nonmetal doping seems to be more promising than metal doping. TiO2 represents an effective photocatalyst for water and air purification and for self-cleaning surfaces. Additionally, it can be used as an antibacterial agent because of its strong oxidation activity and superhydrophilicity. Therefore, applications of TiO2 in terms of photocatalytic activities are discussed here. The basic mechanisms of the photoactivities of TiO2 and nanostructures are considered alongside band structure engineering and surface modification in nanostructured TiO2 in the context of doping. The article reviews the basic structural, optical, and electrical properties of TiO2, followed by detailed fabrication techniques of 0-, 1-, and quasi-2-dimensional TiO2 nanomaterials. Applications and future directions of nanostructured TiO2 are considered in the context of various photoinduced phenomena such as hydrogen production, electricity generation via dye-sensitized solar cells, photokilling and self-cleaning effect, photo-oxidation of organic pollutant, wastewater management, and organic synthesis.Keywords: TiO2 nanostructure, fabrication techniques, doping in TiO2, TiO2-assisted photoactivity, solar hydrogen, TiO2-based dye-sensitized solar cells, TiO2 self-cleaning, organic synthesis Arghya Narayan BanerjeeDove Medical PressarticleMedical technologyR855-855.5Chemical technologyTP1-1185ENNanotechnology, Science and Applications, Vol 2011, Iss default, Pp 35-65 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medical technology R855-855.5 Chemical technology TP1-1185
spellingShingle	Medical technology R855-855.5 Chemical technology TP1-1185 Arghya Narayan Banerjee The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
description	Arghya Narayan BanerjeeSchool of Mechanical Engineering, Yeungnam University, Gyeongsan, South KoreaAbstract: Recent advances in basic fabrication techniques of TiO2-based nanomaterials such as nanoparticles, nanowires, nanoplatelets, and both physical- and solution-based techniques have been adopted by various research groups around the world. Our research focus has been mainly on various deposition parameters used for fabricating nanostructured materials, including TiO2-organic/inorganic nanocomposite materials. Technically, TiO2 shows relatively high reactivity under ultraviolet light, the energy of which exceeds the band gap of TiO2. The development of photocatalysts exhibiting high reactivity under visible light allows the main part of the solar spectrum to be used. Visible light-activated TiO2 could be prepared by doping or sensitizing. As far as doping of TiO2 is concerned, in obtaining tailored material with improved properties, metal and nonmetal doping has been performed in the context of improved photoactivity. Nonmetal doping seems to be more promising than metal doping. TiO2 represents an effective photocatalyst for water and air purification and for self-cleaning surfaces. Additionally, it can be used as an antibacterial agent because of its strong oxidation activity and superhydrophilicity. Therefore, applications of TiO2 in terms of photocatalytic activities are discussed here. The basic mechanisms of the photoactivities of TiO2 and nanostructures are considered alongside band structure engineering and surface modification in nanostructured TiO2 in the context of doping. The article reviews the basic structural, optical, and electrical properties of TiO2, followed by detailed fabrication techniques of 0-, 1-, and quasi-2-dimensional TiO2 nanomaterials. Applications and future directions of nanostructured TiO2 are considered in the context of various photoinduced phenomena such as hydrogen production, electricity generation via dye-sensitized solar cells, photokilling and self-cleaning effect, photo-oxidation of organic pollutant, wastewater management, and organic synthesis.Keywords: TiO2 nanostructure, fabrication techniques, doping in TiO2, TiO2-assisted photoactivity, solar hydrogen, TiO2-based dye-sensitized solar cells, TiO2 self-cleaning, organic synthesis
format	article
author	Arghya Narayan Banerjee
author_facet	Arghya Narayan Banerjee
author_sort	Arghya Narayan Banerjee
title	The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
title_short	The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
title_full	The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
title_fullStr	The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
title_full_unstemmed	The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures
title_sort	design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on tio2-based nanostructures
publisher	Dove Medical Press
publishDate	2011
url	https://doaj.org/article/62a3589f20ce410b9aa2d24e17547206
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The design, fabrication, and photocatalytic utility of nanostructured semiconductors: focus on TiO2-based nanostructures

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