The Effect of Molar Ratio of TiO2/WO3 Nanocomposites on Visible Light Prepared by Hydrothermal Method

Siriphan Chainarong; Niyomwas Sutham; Lek Sikong; Sorapong Pavasupree

doi:10.4028/www.scientific.net/AMR.488-489.572

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 488-489The Effect of Molar Ratio of TiO2/WO3...

The Effect of Molar Ratio of TiO₂/WO₃ Nanocomposites on Visible Light Prepared by Hydrothermal Method

Abstract:

The coupled TiO₂/WO₃ nanocomposites were synthesized by hydrothermal method by using hydrogen titanate and ammonium metatungstate hydrate as the precursors of TiO₂ and WO₃, respectively. The effects of hydrothermal conditions to prepare hydrogen titanate powders were studied. It was found that the hydrothermal condition at 130 °C for 24h shown the best result. The TiO₂/WO₃ nanocomposites were carried out as a function of varied molar ratio of TiO₂/WO₃ for 1:1, 3:1 and 1:3. The coupled TiO₂/WO₃ nanocomposites are characterized by transmission electron microscopy, UV-vis absorption spectra by UV–VIS spectrometer and photocatalytic activity by degradation of MB solution under visible light. The results show that the absorption spectra of the coupled TiO₂/WO₃ nanocomposites can be seen in visible light region which higher than pure TiO₂ (from hydrothermal method) and P25-Degussa.

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Periodical:

Advanced Materials Research (Volumes 488-489)

Pages:

572-577

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.488-489.572

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Online since:

March 2012

Authors:

Siriphan Chainarong, Niyomwas Sutham, Lek Sikong, Sorapong Pavasupree

Keywords:

Coupled WO₃/TiO₂, Hydrothermal Method, TiO₂-WO₃ Nanocomposites, Visible Light

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