08 Paez Liliana

55 %
45 %
Information about 08 Paez Liliana
Education

Published on January 9, 2008

Author: Patrizia

Source: authorstream.com

PREPARATION AND CHARACTERIZATION OF TiO2 COATINGS WITH DIFFERENTS DOPANTS ON GLASS Tutor: Josef Matoušek:  PREPARATION AND CHARACTERIZATION OF TiO2 COATINGS WITH DIFFERENTS DOPANTS ON GLASS Tutor: Josef Matoušek Student: Liliana Rodriguez Paez Objective Preparation of titanium dioxide and mixed oxide layers and their comparation with respect to chemical a optical properties :  Objective Preparation of titanium dioxide and mixed oxide layers and their comparation with respect to chemical a optical properties Method Process sol-gel applied for the preparation of transparent layers on glass:  Method Process sol-gel applied for the preparation of transparent layers on glass Components of TiO2 Solution:  Components of TiO2 Solution Tetra-n-butyl-orthotitanate Precursor Acid Acetic Catalyst Ethanol Solvent Water Acetylacetone For gelation For Peptization Slide5:  Mn(NO3)2 . 4H2O 1.88 g (7.5 mmol) CH3COOH 2.57 ml (45 mmol) CH3COOH 0.64 ml (11.19 mmol) C2H5OH 29.80 ml (510 mmol) C2H5OH 7.45 ml (127.5 mmol) Yellow solution Gelation with H2O 7.60 ml (420 mmol) Tetra –n-butyl-orthotitanate 10.21 ml (30 mmol) Process for preparation of TiO2-0.25MnO solution Slide6:  Gel Peptization with acetylacetone 3.10 ml (30 mmol) Final solution Slide7:  Tetra-n-butyl-orhtotitanate 10.21ml (30 mmol) CH3COOH 2.57 ml (45 mmol) C2H5OH 29.80ml (510mmol) Solution A V2O5 0.17 gr (0.93 mmol) H2O2 Solution B Red solution Process for preparation of TiO2-V2O5 solution Slide8:  Red solution Gelation with H2O 7.60 ml(420 mmol) Peptization with acetylacetone 3.10 ml (30 mmol) Final solution Conditions for preparation of coatings:  Conditions for preparation of coatings Microscope slide or silica glass substrate In the dip coating process withdrawing at a speed of around 10 cm min-1 3. Drying of films at 80°C for 2 hours 4. The films heated to different temperatures 500-800°C Slide10:  Dip Coating Analyses realized:  Analyses realized 1. Measuring of the absorbance in UV region. 2. Measuring of corrosion in water 3. DTA a TG analyses 4. XRD analyses Slide12:  Measurement of absorbance TiO2 films Slide13:  Measurement of absorbance TiO2-MnO films Slide14:  Graph of Na+concentration vs time Slide15:  DTA of TiO2-MnO gel Slide16:  Influence of Time, number of films and temperature on Crystallite form Slide17:  Conclusions The TiO2-MnO films present a higher absorbance in UV region than the films of TiO2. The TiO2-MnO films protect the substrate against corrosion if they are exposed to water for a longer time (above 32 hours) The films present good adhesion and good homogeneity on glass substrate. Anatase as the main crystalline form was detected by XRD analysis in the films burned out at the range of 500-700°C. 5. The anatase-to-rutile phase transformation started at 600-700°C. References:  References D. Kim, S. Hahn, S. Oh, E. Kim. Materials Letters 3809 (2002) O. Harizanov, t. Ivanova, A. Harizanova. Materials Letters 49 (2001). T. Ivanova, A. Harizanova, M. Surtchev. Materials Letters 3501 (2002). Y. Wang, U. Helmersson. P. Kall. Thin Solid Films 405 (2002) R. Arroyo, G. Cordoba, J. Padilla, V. Lara. Materials Letters 3432 (2001). O. Harizanov, A. Harizanova, T. Ivanova. Solid State Ionics 128 (2000). T. Zhang, A. Weidenkaff, A. Reller. Materials Letters 3429 (2001)

Add a comment

Related presentations

Related pages

Yuly Liliana Acosta Paez | LinkedIn

Yuly Liliana Acosta Paez. distribuidora puerta a pu en Marathon Distribuciones Ltda. Location Colombia Industry Marketing and Advertising
Read more

Gira Solidaria "Abrazo A Rosario" | Fito Paez + Liliana ...

Abrazo A Rosario - Córdoba 30/08/13 (Plaza De La Música) ... Gira Solidaria "Abrazo A Rosario" | Fito Paez + Liliana Herrero - No soy un ...
Read more

05 - Fito Páez & Liliana Herrero: Yo Vengo a Ofrecer Mi ...

Want to watch this again later? Sign in to add this video to a playlist. Conciertos en el Monumento Nacional a la Bandera, Rosario, Argentina ...
Read more

Cosmos Shoes International Corp. v. Alipa LLC et al (1:14 ...

LILIANA PAEZ. Mediator. Pamela I. Perry. Dresnick & Rodriguez, P.A. ... Docket last updated: 07/08/2016 11:59 PM EDT Thursday, September 10, 2015: 102
Read more

Descargar Parte Del Aire Euforia en MP3 musica Gratis

Parte Del Aire(Obras 2000)- Fito Paez y Liliana Herrero Duración: 06:45 • Calidad: Buena. ... Parte del Aire 08-10-11 Duración: 077:9 • Calidad: Buena.
Read more

yeimi liliana paez garcia - Google+ - plus.google.com

yeimi liliana paez garcia - soy alegre - melgar-tolima - I. E. T. Sumapaz
Read more

Liliana Páez: La millonaria hecha desde ceros ...

... Juan Camilo Gómez el 27/08/2013 ... La historia de Liliana Páez es ... ventas libros Emprendedores 2020 miamidiario impreso millonaria liliana paez ...
Read more

30 DE JULIO FITO PAEZ Y LILIANA HERRERO EN BRASIL

Fito y Liliana comparten una amistad de casi treinta años, y desde la producción del primer disco de la Herrero, en 1987, sus colaboraciones ...
Read more

Liliana Páez - Google+

Liliana Páez hasn't shared anything on this page with you.
Read more

Descargar Parte Del Aire Paez en MP3 musica Gratis

Canciones para escuchar y descargar de Parte Del Aire Paez MP3. Disfruta de todas sus canciones en linea.
Read more