Nanostructured low crystallized titanium dioxide thin films with good photocatalytic activity

Alcides López; Dwight Acosta; Arturo I. Martínez; Julio Santiago

doi:10.1016/j.powtec.2010.04.025

Nanostructured low crystallized titanium dioxide thin films with good photocatalytic activity

Alcides López, Dwight Acosta, Arturo I. Martínez, Julio Santiago

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

Transparent TiO2 thin films were deposited on soda lime glass at different substrate temperatures by a simple and reproducible spray pyrolysis technique from aqueous peroxo-polytitanic acid. Both the as-prepared and annealed films (3h thermal treatment in air at 500°C) were characterized by AFM, SEM, TEM, XRD, FT-IR and UV-visible spectroscopy. The as-prepared films present predominant low crystallized structure, low porosity, high surface roughness and grain agglomerates while the annealed films exhibit slightly better polycrystalline structure of brookite phase. The as-deposited TiO2 films prepared at low substrate temperatures (280°C) show the best photocatalytic activity, against methylene-blue, due principally to their small grain size and high surface area. © 2010 Elsevier B.V.

Original language	American English
Pages (from-to)	111-117
Number of pages	7
Journal	Powder Technology
DOIs	https://doi.org/10.1016/j.powtec.2010.04.025
State	Published - 1 Aug 2010

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10.1016/j.powtec.2010.04.025

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title = "Nanostructured low crystallized titanium dioxide thin films with good photocatalytic activity",

abstract = "Transparent TiO2 thin films were deposited on soda lime glass at different substrate temperatures by a simple and reproducible spray pyrolysis technique from aqueous peroxo-polytitanic acid. Both the as-prepared and annealed films (3h thermal treatment in air at 500°C) were characterized by AFM, SEM, TEM, XRD, FT-IR and UV-visible spectroscopy. The as-prepared films present predominant low crystallized structure, low porosity, high surface roughness and grain agglomerates while the annealed films exhibit slightly better polycrystalline structure of brookite phase. The as-deposited TiO2 films prepared at low substrate temperatures (280°C) show the best photocatalytic activity, against methylene-blue, due principally to their small grain size and high surface area. {\textcopyright} 2010 Elsevier B.V.",

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AU - López, Alcides

AU - Acosta, Dwight

AU - I. Martínez, Arturo

AU - Santiago, Julio

PY - 2010/8/1

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N2 - Transparent TiO2 thin films were deposited on soda lime glass at different substrate temperatures by a simple and reproducible spray pyrolysis technique from aqueous peroxo-polytitanic acid. Both the as-prepared and annealed films (3h thermal treatment in air at 500°C) were characterized by AFM, SEM, TEM, XRD, FT-IR and UV-visible spectroscopy. The as-prepared films present predominant low crystallized structure, low porosity, high surface roughness and grain agglomerates while the annealed films exhibit slightly better polycrystalline structure of brookite phase. The as-deposited TiO2 films prepared at low substrate temperatures (280°C) show the best photocatalytic activity, against methylene-blue, due principally to their small grain size and high surface area. © 2010 Elsevier B.V.

AB - Transparent TiO2 thin films were deposited on soda lime glass at different substrate temperatures by a simple and reproducible spray pyrolysis technique from aqueous peroxo-polytitanic acid. Both the as-prepared and annealed films (3h thermal treatment in air at 500°C) were characterized by AFM, SEM, TEM, XRD, FT-IR and UV-visible spectroscopy. The as-prepared films present predominant low crystallized structure, low porosity, high surface roughness and grain agglomerates while the annealed films exhibit slightly better polycrystalline structure of brookite phase. The as-deposited TiO2 films prepared at low substrate temperatures (280°C) show the best photocatalytic activity, against methylene-blue, due principally to their small grain size and high surface area. © 2010 Elsevier B.V.

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Nanostructured low crystallized titanium dioxide thin films with good photocatalytic activity

Abstract

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