Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight
Intrinsic short hole diffusion length is a well-known problem for α-Fe2O3 as a visible-light photocatalytic material. In this paper, a nanodisk morphology was designed to remarkably enhance separation of electron-hole pairs of α-Fe2O3. As expected, α-Fe2O3 nanodisks presented superior photocatalytic...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2015-02-01
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| Series: | Science and Technology of Advanced Materials |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1088/1468-6996/16/1/014801 |
| _version_ | 1811285644152930304 |
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| author | Yang Huang Dahu Ding Minshen Zhu Wenjun Meng Yan Huang Fengxia Geng Jie Li Jing Lin Chengchun Tang Zhongfang Lei Zhenya Zhang Chunyi Zhi |
| author_facet | Yang Huang Dahu Ding Minshen Zhu Wenjun Meng Yan Huang Fengxia Geng Jie Li Jing Lin Chengchun Tang Zhongfang Lei Zhenya Zhang Chunyi Zhi |
| author_sort | Yang Huang |
| collection | DOAJ |
| description | Intrinsic short hole diffusion length is a well-known problem for α-Fe2O3 as a visible-light photocatalytic material. In this paper, a nanodisk morphology was designed to remarkably enhance separation of electron-hole pairs of α-Fe2O3. As expected, α-Fe2O3 nanodisks presented superior photocatalytic activity toward methylene blue degradation: more than 90% of the dye could be photodegraded within 30 min in comparison with a degradation efficiency of 50% for conventional Fe2O3 powder. The unique multilayer structure is thought to play a key role in the remarkably improved photocatalytic performance. Further experiments involving mechanism investigations revealed that instead of high surface area, ·OH plays a crucial role in methylene blue degradation and that O·2− may also contribute effectively to the degradation process. This paper demonstrates a facile and energy-saving route to fabricating homogenous α-Fe2O3 nanodisks with superior photocatalytic activity that is suitable for the treatment of contaminated water and that meets the requirement of mass production. |
| first_indexed | 2024-04-13T02:47:09Z |
| format | Article |
| id | doaj.art-dc91bd9edaab4fce86fbbd5e3b15fcad |
| institution | Directory Open Access Journal |
| issn | 1468-6996 1878-5514 |
| language | English |
| last_indexed | 2024-04-13T02:47:09Z |
| publishDate | 2015-02-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj.art-dc91bd9edaab4fce86fbbd5e3b15fcad2022-12-22T03:05:58ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142015-02-0116110.1088/1468-6996/16/1/01480111661239Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insightYang Huang0Dahu Ding1Minshen Zhu2Wenjun Meng3Yan Huang4Fengxia Geng5Jie Li6Jing Lin7Chengchun Tang8Zhongfang Lei9Zhenya Zhang10Chunyi Zhi11City University of Hong KongCity University of Hong KongCity University of Hong KongCity University of Hong KongCity University of Hong KongSoochow UniversityHebei University of TechnologyHebei University of TechnologyHebei University of TechnologyUniversity of TsukubaUniversity of TsukubaCity University of Hong KongIntrinsic short hole diffusion length is a well-known problem for α-Fe2O3 as a visible-light photocatalytic material. In this paper, a nanodisk morphology was designed to remarkably enhance separation of electron-hole pairs of α-Fe2O3. As expected, α-Fe2O3 nanodisks presented superior photocatalytic activity toward methylene blue degradation: more than 90% of the dye could be photodegraded within 30 min in comparison with a degradation efficiency of 50% for conventional Fe2O3 powder. The unique multilayer structure is thought to play a key role in the remarkably improved photocatalytic performance. Further experiments involving mechanism investigations revealed that instead of high surface area, ·OH plays a crucial role in methylene blue degradation and that O·2− may also contribute effectively to the degradation process. This paper demonstrates a facile and energy-saving route to fabricating homogenous α-Fe2O3 nanodisks with superior photocatalytic activity that is suitable for the treatment of contaminated water and that meets the requirement of mass production.http://dx.doi.org/10.1088/1468-6996/16/1/014801α-fe2o3microwave-assisted synthesisphotocatalytic activityactive species |
| spellingShingle | Yang Huang Dahu Ding Minshen Zhu Wenjun Meng Yan Huang Fengxia Geng Jie Li Jing Lin Chengchun Tang Zhongfang Lei Zhenya Zhang Chunyi Zhi Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight Science and Technology of Advanced Materials α-fe2o3 microwave-assisted synthesis photocatalytic activity active species |
| title | Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight |
| title_full | Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight |
| title_fullStr | Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight |
| title_full_unstemmed | Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight |
| title_short | Facile synthesis of α-Fe2O3 nanodisk with superior photocatalytic performance and mechanism insight |
| title_sort | facile synthesis of α fe2o3 nanodisk with superior photocatalytic performance and mechanism insight |
| topic | α-fe2o3 microwave-assisted synthesis photocatalytic activity active species |
| url | http://dx.doi.org/10.1088/1468-6996/16/1/014801 |
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