| Autor: |
Chang, Cancan, Li, Xiang, Guo, Xin, Jin, Zhiliang |
| Předmět: |
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| Zdroj: |
Solar RRL; Feb2024, Vol. 8 Issue 3, p1-21, 21p |
| Abstrakt: |
The photocatalytic overall water splitting performance of the bandgap controllable ZnxCd1−xS solid solution is still restricted by its photo‐corrosion. In this study, amorphous tungsten phosphosulphide (W‐S‐P) modified ZnxCd1−xS solid solution is successfully prepared as a visible‐light‐driven photocatalyst and an efficient and stable ZnxCd1−xS/W‐S‐P heterojunction is constructed through intimate W‐S covalent bonds for efficient photocatalytic overall water splitting. The hydrogen evolution rate of the composite catalyst reached 18899.6 μmol g−1 h−1, which is 86 times and 5 times higher than that of W‐S‐P and Zn0.5Cd0.5S, respectively. At this time, the precipitation rates of H2 and O2 were 157.07 μmol g−1 h−1 and 78.05 μmol g−1 h−1 without any noble metal catalyst. In this work, the overall water splitting efficiency of the catalyst is greatly improved by constructing a ZnxCd1−xS/W‐S‐P Schottky heterojunction, which further inhibits the photo‐corrosion of the ZnxCd1−xS catalyst. At the same time, the strong internal electric field greatly improves the charge transfer efficiency. It provides a new idea for an in‐depth understanding of the chemical changes of elemental binding energy in ZnxCd1−xS solid solution and the design of new binary photocatalytic materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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