Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering

L. C. Silva, B. Barrocas, M. E.Melo Jorge, S. Sério

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

TiO2/WO3 and WO3/TiO2 bilayered films were deposited onto glass substrates by DC reactive magnetron sputtering and their photocatalytic activity was evaluated on the decolorization of Rhodamine 6G (Rh6G) aqueous solutions. The structures, morphologies and optical properties of TiO2 and WO3 layers and also of the bilayered films were studied by X-ray diffraction, field emission scanning electron microscopy and UVVis spectroscopy. It was found that the bilayered films exhibit good adherence to the substrates and high mechanic stability. The structural characterization revealed that in both nanocomposites independently of the above layer, the main phase observed in the X-ray patterns corresponds to WO3 and the optical properties are similar to the WO3 layer. The photocatalytic efficiency of the nanocrystalline bilayered films was further compared with TiO2 and WO3 films also produced by sputtering and the results show that the higher photocatalytic activity was achieved by the bilayered film with WO3 as the upper layer.

Original languageEnglish
Title of host publicationPHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology
EditorsDavid Andrews, Paulo A. Ribeiro, Maria Raposo
PublisherSciTePress
Pages334-340
Number of pages7
Volume2017-January
ISBN (Electronic)9789897582233
Publication statusPublished - 1 Jan 2017
Event5th International Conference on Photonics, Optics and Laser Technology, PHOTOPTICS 2017 - Porto, Portugal
Duration: 27 Feb 20171 Mar 2017

Conference

Conference5th International Conference on Photonics, Optics and Laser Technology, PHOTOPTICS 2017
CountryPortugal
CityPorto
Period27/02/171/03/17

Fingerprint

rhodamine
sputtering
degradation
optical properties
field emission
magnetron sputtering
nanocomposites
x rays
direct current
aqueous solutions
scanning electron microscopy
glass
diffraction
spectroscopy

Keywords

  • Bilayered Films
  • Decolorization
  • Photocatalysis
  • Reactive Sputtering
  • Rhodamine 6G

Cite this

Silva, L. C., Barrocas, B., Jorge, M. E. M., & Sério, S. (2017). Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering. In D. Andrews, P. A. Ribeiro, & M. Raposo (Eds.), PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology (Vol. 2017-January, pp. 334-340). SciTePress.
Silva, L. C. ; Barrocas, B. ; Jorge, M. E.Melo ; Sério, S. / Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering. PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology. editor / David Andrews ; Paulo A. Ribeiro ; Maria Raposo. Vol. 2017-January SciTePress, 2017. pp. 334-340
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Silva, LC, Barrocas, B, Jorge, MEM & Sério, S 2017, Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering. in D Andrews, PA Ribeiro & M Raposo (eds), PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology. vol. 2017-January, SciTePress, pp. 334-340, 5th International Conference on Photonics, Optics and Laser Technology, PHOTOPTICS 2017, Porto, Portugal, 27/02/17.

Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering. / Silva, L. C.; Barrocas, B.; Jorge, M. E.Melo; Sério, S.

PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology. ed. / David Andrews; Paulo A. Ribeiro; Maria Raposo. Vol. 2017-January SciTePress, 2017. p. 334-340.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Silva, L. C.

AU - Barrocas, B.

AU - Jorge, M. E.Melo

AU - Sério, S.

PY - 2017/1/1

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N2 - TiO2/WO3 and WO3/TiO2 bilayered films were deposited onto glass substrates by DC reactive magnetron sputtering and their photocatalytic activity was evaluated on the decolorization of Rhodamine 6G (Rh6G) aqueous solutions. The structures, morphologies and optical properties of TiO2 and WO3 layers and also of the bilayered films were studied by X-ray diffraction, field emission scanning electron microscopy and UVVis spectroscopy. It was found that the bilayered films exhibit good adherence to the substrates and high mechanic stability. The structural characterization revealed that in both nanocomposites independently of the above layer, the main phase observed in the X-ray patterns corresponds to WO3 and the optical properties are similar to the WO3 layer. The photocatalytic efficiency of the nanocrystalline bilayered films was further compared with TiO2 and WO3 films also produced by sputtering and the results show that the higher photocatalytic activity was achieved by the bilayered film with WO3 as the upper layer.

AB - TiO2/WO3 and WO3/TiO2 bilayered films were deposited onto glass substrates by DC reactive magnetron sputtering and their photocatalytic activity was evaluated on the decolorization of Rhodamine 6G (Rh6G) aqueous solutions. The structures, morphologies and optical properties of TiO2 and WO3 layers and also of the bilayered films were studied by X-ray diffraction, field emission scanning electron microscopy and UVVis spectroscopy. It was found that the bilayered films exhibit good adherence to the substrates and high mechanic stability. The structural characterization revealed that in both nanocomposites independently of the above layer, the main phase observed in the X-ray patterns corresponds to WO3 and the optical properties are similar to the WO3 layer. The photocatalytic efficiency of the nanocrystalline bilayered films was further compared with TiO2 and WO3 films also produced by sputtering and the results show that the higher photocatalytic activity was achieved by the bilayered film with WO3 as the upper layer.

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BT - PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology

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Silva LC, Barrocas B, Jorge MEM, Sério S. Photocatalytic degradation of rhodamine 6G using TiO2/WO3 bilayered films produced by reactive sputtering. In Andrews D, Ribeiro PA, Raposo M, editors, PHOTOPTICS 2017 - Proceedings of the 5th International Conference on Photonics, Optics and Laser Technology. Vol. 2017-January. SciTePress. 2017. p. 334-340