A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties
Design and synthesis of ZnO@TiO2 core-shell nanorod arrays as promising photocatalysts have been widely reported. However, it remains a challenge to develop a low-temperature, low-cost, and environmentally friendly method to prepare ZnO@TiO2 core-shell nanorod arrays over a large area for future dev...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/8579896 |
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| author | Yuanyuan Zhao Peifei Tong Dong Ma Bing Li Qinzhuang Liu San Chen Yongxing Zhang |
| author_facet | Yuanyuan Zhao Peifei Tong Dong Ma Bing Li Qinzhuang Liu San Chen Yongxing Zhang |
| author_sort | Yuanyuan Zhao |
| collection | DOAJ |
| description | Design and synthesis of ZnO@TiO2 core-shell nanorod arrays as promising photocatalysts have been widely reported. However, it remains a challenge to develop a low-temperature, low-cost, and environmentally friendly method to prepare ZnO@TiO2 core-shell nanorod arrays over a large area for future device applications. Here, a facile, green, and efficient route is designed to prepare the ZnO@TiO2 nanorod arrays with a highly uniform core-shell structure over a large area on Zn wafer via a vapor-thermal method at relatively low temperature. The growth mechanism is proposed as a layer-by-layer assembly. The photocatalytic decomposition reaction of methylene blue (MB) reveals that the ZnO@TiO2 core-shell nanorod arrays have excellent photocatalytic activities when compared with the performance of the ZnO nanorod arrays. The improved photocatalytic activity could be attributed to the core-shell structure, which can effectively reduce the recombination rate of electron-hole pairs, significantly increase the optical absorption range, and offer a high density of surface active catalytic sites for the decomposition of organic pollutants. In addition, it is very easy to separate or recover ZnO@TiO2 core-shell nanorod array catalysts when they are used in water purification processes. |
| format | Article |
| id | doaj-art-c851b947f8fc42e5ae73a5f1df167917 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-c851b947f8fc42e5ae73a5f1df1679172025-02-03T07:25:44ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/85798968579896A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic PropertiesYuanyuan Zhao0Peifei Tong1Dong Ma2Bing Li3Qinzhuang Liu4San Chen5Yongxing Zhang6Collaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaCollaborative Innovation Center of Advanced Functional Composites, Huaibei Normal University, Huaibei 235000, ChinaDesign and synthesis of ZnO@TiO2 core-shell nanorod arrays as promising photocatalysts have been widely reported. However, it remains a challenge to develop a low-temperature, low-cost, and environmentally friendly method to prepare ZnO@TiO2 core-shell nanorod arrays over a large area for future device applications. Here, a facile, green, and efficient route is designed to prepare the ZnO@TiO2 nanorod arrays with a highly uniform core-shell structure over a large area on Zn wafer via a vapor-thermal method at relatively low temperature. The growth mechanism is proposed as a layer-by-layer assembly. The photocatalytic decomposition reaction of methylene blue (MB) reveals that the ZnO@TiO2 core-shell nanorod arrays have excellent photocatalytic activities when compared with the performance of the ZnO nanorod arrays. The improved photocatalytic activity could be attributed to the core-shell structure, which can effectively reduce the recombination rate of electron-hole pairs, significantly increase the optical absorption range, and offer a high density of surface active catalytic sites for the decomposition of organic pollutants. In addition, it is very easy to separate or recover ZnO@TiO2 core-shell nanorod array catalysts when they are used in water purification processes.http://dx.doi.org/10.1155/2017/8579896 |
| spellingShingle | Yuanyuan Zhao Peifei Tong Dong Ma Bing Li Qinzhuang Liu San Chen Yongxing Zhang A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties Journal of Chemistry |
| title | A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties |
| title_full | A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties |
| title_fullStr | A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties |
| title_full_unstemmed | A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties |
| title_short | A Facile Route to the Preparation of Highly Uniform ZnO@TiO2 Core-Shell Nanorod Arrays with Enhanced Photocatalytic Properties |
| title_sort | facile route to the preparation of highly uniform zno tio2 core shell nanorod arrays with enhanced photocatalytic properties |
| url | http://dx.doi.org/10.1155/2017/8579896 |
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