Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 50, Pages 27592-27596Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b08904
Keywords
BiOBr; bismuth oxyhalide; two-dimensional; photocatalysis; {001} facets; strain; DFT; nanosheets
Funding
- Australian Research Council (ARC) through a Discovery Project [DP 140102581]
- National Natural Science Foundation of China [51472016, 51272015]
- Grants-in-Aid for Scientific Research [26870184] Funding Source: KAKEN
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BiOBr nanosheets with highly reactive {001} facets exposed were selectively synthesized by a facile hydrothermal method. The inner strain in the BiOBr nanosheets has been tuned continuously by the pH value. The photocatalytic performance of BiOBr in dye degradation can be manipulated by the strain effect. The low-strain BiOBr nanosheets show improved photocatalytic activity. Density functional calculations suggest that strain can modify the band structure and symmetry BiOBr. The enhanced photocatalytic activity in low-strain BiOBr nanosheets is due to improved charge separation attributable to a highly dispersive band structure with an indirect band gap.
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