Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure
Zinc oxide (ZnO)/titanium dioxide (TiO2) nanorods have been synthesized via a hydrothermal method for ZnO nanorods and an electron-beam deposition for TiO2 nanorods. This work examined the effect of annealing ZnO seed layer on the photocatalytic activity of the ZnO/TiO2 nanorods which was determined...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/130541 |
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| author | Woo-Young Kim Soon-Wook Kim Dae-Hwang Yoo Eui Jung Kim Sung Hong Hahn |
| author_facet | Woo-Young Kim Soon-Wook Kim Dae-Hwang Yoo Eui Jung Kim Sung Hong Hahn |
| author_sort | Woo-Young Kim |
| collection | DOAJ |
| description | Zinc oxide (ZnO)/titanium dioxide (TiO2) nanorods have been synthesized via a hydrothermal method for ZnO nanorods and an electron-beam deposition for TiO2 nanorods. This work examined the effect of annealing ZnO seed layer on the photocatalytic activity of the ZnO/TiO2 nanorods which was determined from photodecomposition of methylene blue under UV irradiation. The photocatalytic activity of the ZnO/TiO2 nanorods was improved with increasing annealing temperature of the seed layer from 300°C to 500°C. Annealing the seed layer at 500°C showed the best photocatalytic activity resulting from high UV absorption ability, a large surface area with flower structure and copious oxygen defects which promote separation of electron-hole pairs reducing electron recombination. The prepared nanorods were characterized by field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), photoluminescence (PL), and UV-visible spectroscopy. |
| format | Article |
| id | doaj-art-5e31f1c97c49485bb580bac0ed6c5abf |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-5e31f1c97c49485bb580bac0ed6c5abf2025-02-03T06:00:33ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/130541130541Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 NanostructureWoo-Young Kim0Soon-Wook Kim1Dae-Hwang Yoo2Eui Jung Kim3Sung Hong Hahn4Department of Physics, University of Ulsan, Ulsan 680-749, Republic of KoreaDepartment of Physics, University of Ulsan, Ulsan 680-749, Republic of KoreaDepartment of Physics, University of Ulsan, Ulsan 680-749, Republic of KoreaDepartment of Chemical Engineering, University of Ulsan, Ulsan 680-749, Republic of KoreaDepartment of Physics, University of Ulsan, Ulsan 680-749, Republic of KoreaZinc oxide (ZnO)/titanium dioxide (TiO2) nanorods have been synthesized via a hydrothermal method for ZnO nanorods and an electron-beam deposition for TiO2 nanorods. This work examined the effect of annealing ZnO seed layer on the photocatalytic activity of the ZnO/TiO2 nanorods which was determined from photodecomposition of methylene blue under UV irradiation. The photocatalytic activity of the ZnO/TiO2 nanorods was improved with increasing annealing temperature of the seed layer from 300°C to 500°C. Annealing the seed layer at 500°C showed the best photocatalytic activity resulting from high UV absorption ability, a large surface area with flower structure and copious oxygen defects which promote separation of electron-hole pairs reducing electron recombination. The prepared nanorods were characterized by field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), photoluminescence (PL), and UV-visible spectroscopy.http://dx.doi.org/10.1155/2013/130541 |
| spellingShingle | Woo-Young Kim Soon-Wook Kim Dae-Hwang Yoo Eui Jung Kim Sung Hong Hahn Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure International Journal of Photoenergy |
| title | Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure |
| title_full | Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure |
| title_fullStr | Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure |
| title_full_unstemmed | Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure |
| title_short | Annealing Effect of ZnO Seed Layer on Enhancing Photocatalytic Activity of ZnO/TiO2 Nanostructure |
| title_sort | annealing effect of zno seed layer on enhancing photocatalytic activity of zno tio2 nanostructure |
| url | http://dx.doi.org/10.1155/2013/130541 |
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