Nanocrystalline Thin Films TiO2 Prepared by Different Concentration of Organic Acid and their Photocatalytic Activity

Nitikarn Fangern; Sudjit Sanguanruang; Chamorn Chawengkijwanich

doi:10.4028/www.scientific.net/AMR.233-235.363

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Nanocrystalline Thin Films TiO2 Prepared by...

Nanocrystalline Thin Films TiO₂ Prepared by Different Concentration of Organic Acid and their Photocatalytic Activity

Abstract:

In this work, TiO₂thin films were deposited on borosilicate glass substrates by sol-gel dip coating method and calcined at 500 °C for 15 min(heating rate3°C/min). The TiO₂sol was prepared by fixing concentration of titaniumtetraisopropoxide(TTIP), TritonX-100 surfactant, ethanol and conc hydrochloric acid but amounts of acetyl acetone (Acac ) were various as 4, 6 and 8 mole respectively. After calcination process, all the TiO₂thin films were homogeneous and transparent. Several techniques , such as X-ray diffraction (XRD), UV-Vis spectroscopy, Environment Scanning Electron Microscope (E-SEM), atomic force microscopy (AFM) and BET surface area analysis were used to characterize the prepared TiO₂thin film. Spectra of XRD showed that the crystal structure was anatase phase with the crystal sizes of 9.05 – 12.57 nm. According to BET surface area analysis, the surface area , pore volume and pore size of TiO₂ were in the range of 66.35-82.53 m²/gm , 0.1194-0.1301 cm³/g and 57-71 A⁰ respectively. The photodegradation of Reactive Blue 19 by the prepared TiO₂thin films showed decomposition rate of 97.58% , 95.03 % and 94.48% for the thin films prepared by using 4, 6 and 8 mole AcAc respectively.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

363-368

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.363

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Online since:

May 2011

Authors:

Nitikarn Fangern, Sudjit Sanguanruang, Chamorn Chawengkijwanich

Keywords:

Nanocrystalline Thin Film TiO₂, Photodegradation, Reactive Blue 19

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