期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 187, 期 -, 页码 342-349出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.01.053
关键词
BiOBr; Nanosheet thickness; Photocatalysis; Crystal facet; Wavelength
资金
- National Natural Science Foundation of China [21573133, 21273135]
- Fundamental Research Funds of Shandong University in China [12320075614004]
BiOBr nanosheets with dominant exposed (0 1 0) facets exhibit higher photocatalytic activity than those with highly exposed (0 01) facets under illumination of light with wavelengths (lambda) of similar to 365 and >= 420 nm, but lower photoactivity under light with lambda of 254nm. The lambda-dependent differences in photocatalytic activity result from different (0 0 1) facet exposure percentages (F(0 0 1)) and nanosheet thicknesses (H) between the two samples. Whether the difference in F(0 01) or that in H influences the photoactivity of the BiOBr nanosheets as a primary factor depends on incident light penetration depth which increases with the lambda. This study gives a better insight into the structure-performance relationship of two-dimensional (2D) photocatalysts and will supply important direction for photocatalytic studies of 2D semiconductors. (C 2016 Elsevier B.V. All rights reserved.
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