W–N Bonds Precisely Boost Z-Scheme Interfacial Charge Transfer in g-C 3 N 4 /WO 3 Heterojunctions for Enhanced Photocatalytic H 2 Evolution
South China Agricultural University · Ministry of Agriculture and Rural Affairs · +6 more institutions
Abstract
Exploring and achieving precise electron-transfer channels in the interface of Z-scheme heterojunctions are essential and have been considered as immense challenges. A strategy to precisely connect the valence band (VB) site of g-C3N4 (CN) with the conduction band (CB) site of WO3 through the tungsten–nitrogen (W–N) bond was developed to create a chemically bonded Z-scheme heterojunction photocatalyst. Because of this reason, the photogenerated electrons from the CB site of WO3 could be accurately and directly injected into the VB site of CN, following the direct Z-scheme charge separation pathways. The photocatalytic hydrogen production rate of optimal CNWB was 482 μmol h–1, 4.3 times higher than that of…
Citation impact
- FWCI
- 10.49
- Percentile
- 100%
- References
- 51
Authors
8Topics & keywords
- Photocatalysis
- Heterojunction
- Electron transfer
- Materials science
- Catalysis
- Nanotechnology
- Chemistry
- Photochemistry