https://scholars.lib.ntu.edu.tw/handle/123456789/576327
標題: | Z-scheme photocatalyst Pt/GaP-TiO2-SiO2:Rh for the separated H2 evolution from photocatalytic seawater splitting | 作者: | Dang H.V Wang Y.H Wu J.C.S. JEFFREY CHI-SHENG WU |
公開日期: | 2021 | 卷: | 296 | 來源出版物: | Applied Catalysis B: Environmental | 摘要: | Heterojunction Pt/GaP-TiO2-SiO2:Rh (PGTSR) photocatalyst with the uniform spherical morphology (20 nm) possessed the high Ti3+ defects and oxygen vacancy (VO) sites in TiO2-SiO2:Rh composite which intimately contacted with GaP to form a Z-scheme photocatalyst. The PGTSR exhibited high photoactivity for pure water and artificial seawater splitting without sacrificial agents in single reactor under 4 -h simulated sunlight irradiation. The hydrogen/oxygen evolution rates (HER/OER) reached 80.1/41.2 μmol.g?1 and 94.0/45.1 μmol.g?1 in pure and artificial seawater splitting, respectively. The separated H2 evolution from O2 through the photocatalytic artificial seawater splitting was also carried out in a twin photoreactor, which was divided by a Neosepta membrane with IO3-/I- shuttle mediator and used commercial WO3 as O2-photocatalyst, was achieved with HER/OER of 41.5/26.1 μmol.g?1 after 4 -h simulated sunlight irradiation. This work demonstrated a new construct of Z-scheme photocatalyst as well as the improvement of artificial photosynthesis system for overall photocatalytic seawater splitting. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105743984&doi=10.1016%2fj.apcatb.2021.120339&partnerID=40&md5=9c194b5d4d74f447ca25935de46da19a https://scholars.lib.ntu.edu.tw/handle/123456789/576327 |
ISSN: | 9263373 | DOI: | 10.1016/j.apcatb.2021.120339 |
顯示於: | 化學工程學系 |
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