N-TiO 2: Chemical synthesis and photocatalysis

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The chemical synthesis of nitrogen-doped titanium dioxide (N-TiO 2) is explored in an attempt to understand the mechanisms of doping. Urea is used as precursor in a sol gel synthesis of N-TiO 2. Chemical and structural changes during thermal treatment of the precursors were followed by several techn...

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Autores principales:	Factorovich, M., Guz, L., Candal, R.
Formato:	Artículo publishedVersion
Publicado:	2011
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_16877985_v2011_n_p_Factorovich_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

id	I28-R145-paper_16877985_v2011_n_p_Factorovich_oai
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spelling	I28-R145-paper_16877985_v2011_n_p_Factorovich_oai2024-08-16 Factorovich, M. Guz, L. Candal, R. 2011 The chemical synthesis of nitrogen-doped titanium dioxide (N-TiO 2) is explored in an attempt to understand the mechanisms of doping. Urea is used as precursor in a sol gel synthesis of N-TiO 2. Chemical and structural changes during thermal treatment of the precursors were followed by several techniques. The effect of doping on band gap, morphology, and microstructure was also determined. The byproducts produced during firing correspond to those obtained during urea thermal decomposition. Polynitrogenated colored compounds produced at temperatures below 400°C may act as sensitizer. Incorporation of N in the TiO 2 structure is possible at higher temperatures. Degradation experiments of salicylic acid under UVA and visible light (γ≥400 nm) in the presence of TiO 2 or N-TiO 2 indicate that doping decreases the activity under UVA light, while stable byproducts are produced under visible light. © 2011 Matias Factorovich et al. Fil:Candal, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Adv. Phys. Chem 2011;2011 N-TiO 2: Chemical synthesis and photocatalysis info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_16877985_v2011_n_p_Factorovich_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
description	The chemical synthesis of nitrogen-doped titanium dioxide (N-TiO 2) is explored in an attempt to understand the mechanisms of doping. Urea is used as precursor in a sol gel synthesis of N-TiO 2. Chemical and structural changes during thermal treatment of the precursors were followed by several techniques. The effect of doping on band gap, morphology, and microstructure was also determined. The byproducts produced during firing correspond to those obtained during urea thermal decomposition. Polynitrogenated colored compounds produced at temperatures below 400°C may act as sensitizer. Incorporation of N in the TiO 2 structure is possible at higher temperatures. Degradation experiments of salicylic acid under UVA and visible light (γ≥400 nm) in the presence of TiO 2 or N-TiO 2 indicate that doping decreases the activity under UVA light, while stable byproducts are produced under visible light. © 2011 Matias Factorovich et al.
format	Artículo Artículo publishedVersion
author	Factorovich, M. Guz, L. Candal, R.
spellingShingle	Factorovich, M. Guz, L. Candal, R. N-TiO 2: Chemical synthesis and photocatalysis
author_facet	Factorovich, M. Guz, L. Candal, R.
author_sort	Factorovich, M.
title	N-TiO 2: Chemical synthesis and photocatalysis
title_short	N-TiO 2: Chemical synthesis and photocatalysis
title_full	N-TiO 2: Chemical synthesis and photocatalysis
title_fullStr	N-TiO 2: Chemical synthesis and photocatalysis
title_full_unstemmed	N-TiO 2: Chemical synthesis and photocatalysis
title_sort	n-tio 2: chemical synthesis and photocatalysis
publishDate	2011
url	http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_16877985_v2011_n_p_Factorovich_oai
work_keys_str_mv	AT factorovichm ntio2chemicalsynthesisandphotocatalysis AT guzl ntio2chemicalsynthesisandphotocatalysis AT candalr ntio2chemicalsynthesisandphotocatalysis
_version_	1809357028754194432

N-TiO 2: Chemical synthesis and photocatalysis

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