Enhanced solar water splitting of electron beam irradiated titania photoanode by electrostatic spray deposition
- Authors
- Mali, Mukund G.; Yoon, Hyun; An, Seongpil; Choi, Jae-Young; Kim, Ha-Yong; Lee, Byung Cheol; Kim, Byung Nam; Park, Ji Hyun; Al-Deyab, Salem S.; Yoon, Sam S.
- Issue Date
- 15-11월-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Electrostatic spray deposition; Water splitting; Electron beam; TiO2; Thin film
- Citation
- APPLIED SURFACE SCIENCE, v.319, pp.205 - 210
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 319
- Start Page
- 205
- End Page
- 210
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96763
- DOI
- 10.1016/j.apsusc.2014.06.097
- ISSN
- 0169-4332
- Abstract
- Surface modifications are often made to titania films to improve its photocatalytic performance in water splitting. We herein introduced electron beam irradiation to enhance the photocatalytic activities of an electro-sprayed titania film for solar water splitting application. The film was fabricated by a facile and scalable electrostatic spraying deposition. According to SEM, X-ray diffraction, and Raman data, electron beam densified the film and improved its crystallinity. Absorbance data indicated that the band gap of the E-beam film reduced, which in turn covered the wider range of absorbed light. These modifications increased oxygen vacancies or defects, which enhanced mobility and separation of electrons and holes. As a result, the E-beam film exhibited a threefold increase in the photocurrent density, compared to that of the non-E-beam film. This electrosprayed titania film was used as a photoanode while the reference and counter electrodes involved in the generation of hydrogen were made of Ag/AgCl and platinum, respectively. The intensity of the UV light illumination used was 1 mW/cm(2). (C) 2014 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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