Perylenetetracarboxylic acid nanosheets with internal electric fields and anisotropic charge migration for photocatalytic hydrogen evolution
Harbin Institute of Technology · Tsinghua University · +1 more institution
Abstract
Abstract Highly efficient hydrogen evolution reactions carried out via photocatalysis using solar light remain a formidable challenge. Herein, perylenetetracarboxylic acid nanosheets with a monolayer thickness of ~1.5 nm were synthesized and shown to be active hydrogen evolution photocatalysts with production rates of 118.9 mmol g −1 h −1 . The carboxyl groups increased the intensity of the internal electric fields of perylenetetracarboxylic acid from the perylene center to the carboxyl border by 10.3 times to promote charge-carrier separation. The photogenerated electrons and holes migrated to the edge and plane, respectively, to weaken charge-carrier recombination. Moreover, the perylenetetracarboxylic acid…
Citation impact
- FWCI
- 12.62
- Percentile
- 100%
- References
- 79
Authors
6Topics & keywords
- Photocatalysis
- Electric field
- Charge carrier
- Perylene
- Hydrogen
- Photochemistry
- Hydrogen production
- Materials science