Graphene-Titania Hybrid Photoanodes by Supersonic Kinetic Spraying for Solar Water Splitting
- Authors
- Lee, Jong-Gun; Kim, Do-Yeon; Park, Jung-Jae; Cha, You-Hong; Yoon, Joshua Y.; Jeon, Hyo Sang; Min, Byoung Koun; Swihart, Mark T.; Jin, Sungho; Al-Deyab, Salem S.; Yoon, Sam S.
- Issue Date
- 11월-2014
- Publisher
- WILEY
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.97, no.11, pp.3660 - 3668
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY
- Volume
- 97
- Number
- 11
- Start Page
- 3660
- End Page
- 3668
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96991
- DOI
- 10.1111/jace.13174
- ISSN
- 0002-7820
- Abstract
- We report the synthesis of graphene-TiO2 (G-TiO2) composite films that exhibit significantly enhanced photoelectrochemical water-splitting performance relative to pure TiO2. Supersonic kinetic spraying was used to produce strongly adhered, electrically and mechanically robust G-TiO2 composite films containing 0.1, 0.5, 1.0, and 5.0 wt.% graphene. Films with an intermediate graphene content of 1.0 wt.% demonstrated the best water-splitting performance. G-TiO2 composite films with 1.0 wt.% graphene exhibited photocurrent density ten times that of pure TiO2 films. The electron transfer between TiO2 and graphene suppresses the recombination of photoinduced charge carriers and prolongs the electron excited-state lifetime, which contributes to the enhanced photoelectrochemical water-splitting performance.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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