Artículo
Synthesis of N-TiO2 Effect of the Concentration of Nitrogen in the Band Gap
Pérez, Eliana Guadalupe
; Farfan Torres, Elsa Monica
; Morales, Graciela del Valle
; Murgia, Viviana; Sham, Edgardo Ling
Fecha de publicación:
07/2015
Editorial:
Elsevier
Revista:
Procedia Materials Science
ISSN:
2211-8128
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work TiO2 modified with nitrogen was synthesized by sol-gel method from the hydrolysis of titanium isopropoxide with urea solution in different concentrations so that the theoretical N/Ti molar ratio was equal to 0, 0.5, 1 and 2, calcined at 400 °C. The samples were characterized by diffuse reflectance spectroscopy, thermo differential analysis and Raman spectroscopy. The TiO2 synthesized without nitrogen are active only under ultraviolet radiation, while samples containing nitrogen absorbed in the visible range. In Raman spectra the characteristic peaks of the crystalline anatase phase were observed with a slight shift and a decrease of the crystallization grade with the increase of the N/Ti ratio. The analysis of photoactivity of the modified catalyst in the degradation of tartrazine under visible light is analyzed.
Palabras clave:
Tio2
,
Doped
,
Visible
,
Absorption
,
Visible
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Identificadores
Colecciones
Articulos(INIQUI)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Articulos de INST.DE INVEST.PARA LA INDUSTRIA QUIMICA (I)
Citación
Pérez, Eliana Guadalupe; Farfan Torres, Elsa Monica; Morales, Graciela del Valle; Murgia, Viviana; Sham, Edgardo Ling; Synthesis of N-TiO2 Effect of the Concentration of Nitrogen in the Band Gap; Elsevier; Procedia Materials Science; 8; 7-2015; 649-655
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