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Abstract:

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.

Registro:

Documento: Artículo
Título:N-TiO 2: Chemical synthesis and photocatalysis
Autor:Factorovich, M.; Guz, L.; Candal, R.
Filiación:Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1428 Buenos Aires, Argentina
Escuela de Ciencia y Tecnología, 3iA, Universidad Nacional de San Martín, Campus Miguelete, 1650 San Martín, Prov. de Buenos Aires, Argentina
Año:2011
Volumen:2011
DOI: http://dx.doi.org/10.1155/2011/821204
Título revista:Advances in Physical Chemistry
Título revista abreviado:Adv. Phys. Chem
ISSN:16877985
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_16877985_v2011_n_p_Factorovich.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16877985_v2011_n_p_Factorovich

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Citas:

---------- APA ----------
Factorovich, M., Guz, L. & Candal, R. (2011) . N-TiO 2: Chemical synthesis and photocatalysis. Advances in Physical Chemistry, 2011.
http://dx.doi.org/10.1155/2011/821204
---------- CHICAGO ----------
Factorovich, M., Guz, L., Candal, R. "N-TiO 2: Chemical synthesis and photocatalysis" . Advances in Physical Chemistry 2011 (2011).
http://dx.doi.org/10.1155/2011/821204
---------- MLA ----------
Factorovich, M., Guz, L., Candal, R. "N-TiO 2: Chemical synthesis and photocatalysis" . Advances in Physical Chemistry, vol. 2011, 2011.
http://dx.doi.org/10.1155/2011/821204
---------- VANCOUVER ----------
Factorovich, M., Guz, L., Candal, R. N-TiO 2: Chemical synthesis and photocatalysis. Adv. Phys. Chem. 2011;2011.
http://dx.doi.org/10.1155/2011/821204