Oxygen-vacancy-modified brookite TiO2 nanorods as visible-lightresponsive photocatalysts
- Authors
- Park, Sangbaek; Baek, Seungtae; Kim, Dong-Wan; Lee, Sangwook
- Issue Date
- 1-12월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Brookite TiO2; Nanorod; Oxygen vacancy; Visible light; Photocatalysis
- Citation
- MATERIALS LETTERS, v.232, pp.146 - 149
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS LETTERS
- Volume
- 232
- Start Page
- 146
- End Page
- 149
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/71254
- DOI
- 10.1016/j.matlet.2018.08.086
- ISSN
- 0167-577X
- Abstract
- Brookite is the least studied TiO2, and its modification for improved photocatalytic activity remains a challenge because of the difficulties encountered in obtaining its pure form. Here, we report for the first time visible-light-active brookite (BT) nanorods with a high specific surface area and a large amount of oxygen vacancies, which are synthesized via a simple, one-step, surfactant-free, wet-chemical method. The oxygen vacancies of the BT nanorods facilitate absorption of visible light, and the absorption property could be tailored by post-annealing, without any significant change in the surface area and anisotropic morphology. BT nanorods annealed at 300 degrees C show superior photocatalytic activity compared to anatase TiO2 nanoparticles and other visible-light-active photocatalysts. (C) 2018 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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