Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition
Hierarchically structured TiO2 photocatalyst films were synthesized using low-pressure metal-organic chemical vapor deposition (LPMOCVD) method to examine their photocatalytic activity. The thickness of the TiO2 films increased proportionally with increasing deposition time. The TiO2 film synthesize...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2014/637532 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832555128011358208 |
|---|---|
| author | Heon Lee Sung Hoon Park Young-Kwon Park Sun-Jae Kim Byung-Hoon Kim Jaehong Lee Sang-Chul Jung |
| author_facet | Heon Lee Sung Hoon Park Young-Kwon Park Sun-Jae Kim Byung-Hoon Kim Jaehong Lee Sang-Chul Jung |
| author_sort | Heon Lee |
| collection | DOAJ |
| description | Hierarchically structured TiO2 photocatalyst films were synthesized using low-pressure metal-organic chemical vapor deposition (LPMOCVD) method to examine their photocatalytic activity. The thickness of the TiO2 films increased proportionally with increasing deposition time. The TiO2 film synthesized at 773 K showed a hierarchical structure composed of vertically grown laminar (112)-oriented anatase crystals. With increasing deposition time, the grain became larger and the morphology became sharper. In the initial CVD stage, small particular crystals were formed, above which sequential growth of layers of columnars with increasing size took place, forming hierarchical structure. The hierarchically structured TiO2 film exhibited much higher photocatalytic activity than unhierarchically structured TiO2 film. The photocatalytic activity increased with increasing film thickness. |
| format | Article |
| id | doaj-art-b883c2a691fb4ec8923b17c9a46dcdcb |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-b883c2a691fb4ec8923b17c9a46dcdcb2025-02-03T05:49:37ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/637532637532Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor DepositionHeon Lee0Sung Hoon Park1Young-Kwon Park2Sun-Jae Kim3Byung-Hoon Kim4Jaehong Lee5Sang-Chul Jung6Department of Environmental Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Republic of KoreaDepartment of Environmental Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Republic of KoreaSchool of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of KoreaFaculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of KoreaDepartment of Dental Materials, School of Dentistry, Chosun University, Gwangju 501-759, Republic of KoreaDepartment of Architecture Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Republic of KoreaDepartment of Environmental Engineering, Sunchon National University, Sunchon, Jeonnam 540-742, Republic of KoreaHierarchically structured TiO2 photocatalyst films were synthesized using low-pressure metal-organic chemical vapor deposition (LPMOCVD) method to examine their photocatalytic activity. The thickness of the TiO2 films increased proportionally with increasing deposition time. The TiO2 film synthesized at 773 K showed a hierarchical structure composed of vertically grown laminar (112)-oriented anatase crystals. With increasing deposition time, the grain became larger and the morphology became sharper. In the initial CVD stage, small particular crystals were formed, above which sequential growth of layers of columnars with increasing size took place, forming hierarchical structure. The hierarchically structured TiO2 film exhibited much higher photocatalytic activity than unhierarchically structured TiO2 film. The photocatalytic activity increased with increasing film thickness.http://dx.doi.org/10.1155/2014/637532 |
| spellingShingle | Heon Lee Sung Hoon Park Young-Kwon Park Sun-Jae Kim Byung-Hoon Kim Jaehong Lee Sang-Chul Jung Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition International Journal of Photoenergy |
| title | Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition |
| title_full | Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition |
| title_fullStr | Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition |
| title_full_unstemmed | Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition |
| title_short | Photocatalytic Activity of Hierarchically Structured TiO2 Films Synthesized by Chemical Vapor Deposition |
| title_sort | photocatalytic activity of hierarchically structured tio2 films synthesized by chemical vapor deposition |
| url | http://dx.doi.org/10.1155/2014/637532 |
| work_keys_str_mv | AT heonlee photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT sunghoonpark photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT youngkwonpark photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT sunjaekim photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT byunghoonkim photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT jaehonglee photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition AT sangchuljung photocatalyticactivityofhierarchicallystructuredtio2filmssynthesizedbychemicalvapordeposition |