Visible-light driven S-scheme Mn0.2Cd0.8S/CoTiO3 heterojunction for photocatalytic hydrogen evolution
| Autor: | Kaicheng Yang, Tianxia Liu, Haiming Gong, Zhiliang Jin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
060102 archaeology Renewable Energy Sustainability and the Environment 020209 energy Heterojunction 06 humanities and the arts 02 engineering and technology Overpotential Microstructure Electrochemistry Chemical state Chemical engineering 0202 electrical engineering electronic engineering information engineering Photocatalysis 0601 history and archaeology Hydrogen evolution Visible spectrum |
| Zdroj: | Renewable Energy. 173:389-400 |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2021.03.146 |
| Popis: | A novel S-scheme Mn0.2Cd0.8S/CoTiO3 photocatalytic system was formed. The morphology, microstructure, chemical state and optical behavior of Mn0.2Cd0.8S/CoTiO3 have been studied using SEM, XRD, TEM, UV–vis, PL and TRPL techniques, which proves that the existence of the S-scheme heterojunction accelerates the transfer of photogenerated carriers and the ability to capture and utilize visible light. The electrochemical test proved that the composite sample greatly reduces the overpotential of the hydrogen evolution reaction, thereby achieving ultra-high hydrogen evolution. In addition, the feasible mechanism of photocatalytic hydrogen evolution is described. This work will furnish fresh insights for the conception and construction of efficient binary heterojunction photocatalysts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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