N-TiO 2: Chemical synthesis and photocatalysis

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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Autor principal: Candal, Roberto Jorge
Publicado: 2011
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16877985_v2011_n_p_Factorovich
http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_16877985_v2011_n_p_Factorovich2023-06-08T16:26:43Z N-TiO 2: Chemical synthesis and photocatalysis Candal, Roberto Jorge 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. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16877985_v2011_n_p_Factorovich http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (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.
author Candal, Roberto Jorge
spellingShingle Candal, Roberto Jorge
N-TiO 2: Chemical synthesis and photocatalysis
author_facet Candal, Roberto Jorge
author_sort Candal, Roberto Jorge
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 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16877985_v2011_n_p_Factorovich
http://hdl.handle.net/20.500.12110/paper_16877985_v2011_n_p_Factorovich
work_keys_str_mv AT candalrobertojorge ntio2chemicalsynthesisandphotocatalysis
_version_ 1768545947654029312

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