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. 2024-01-20T08:32:45Z 2024-01-20T08:32:45Z 2021-09-02 2014-11 0002-7820 https://pubs.kist.re.kr/handle/201004/126180 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. English WILEY HYDROGEN GENERATION NANOTUBE ARRAYS CHARGE-TRANSFER TIO2 PHOTOELECTRODES COMPOSITES CARBON FILMS PHOTOCATALYSIS NANOCOMPOSITES Graphene-Titania Hybrid Photoanodes by Supersonic Kinetic Spraying for Solar Water Splitting Article 10.1111/jace.13174 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.97, no.11, pp.3660 - 3668 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 97 11 3660 3668 scie scopus 000344779900050 2-s2.0-85028641494 Materials Science, Ceramics Materials Science Article HYDROGEN GENERATION NANOTUBE ARRAYS CHARGE-TRANSFER TIO2 PHOTOELECTRODES COMPOSITES CARBON FILMS PHOTOCATALYSIS NANOCOMPOSITES graphene titania water splitting