Journal
APPLIED ORGANOMETALLIC CHEMISTRY
Volume 32, Issue 12, Pages -Publisher
WILEY
DOI: 10.1002/aoc.4596
Keywords
BiOBr microsphere; ionic liquid; photocatalysis; self-assembly
Categories
Funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions [1107047002]
- Scientific Innovation Research Foundation of College Graduate in Jiangsu Province [KYCX17_0134 KYLX16_0266]
- Fundamental Research Funds for the Central Universities [3207048418, 2242018 k30008]
- Qing Lan Project of Jiangsu Province [1107040167]
- 'Six Talents Pinnacle Program' of Jiangsu Province of China [JNHB-006]
- Natural Science Foundation of Jiangsu Province [BK20171357, BK20180366]
- National Natural Science Foundation of China [21306023, 21376051, 21676056, 51673040, 21878047]
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Porous BiOBr microspheres have been successfully synthesized through an ethylene glycol-assisted solvothermal method using reactive ionic liquids as templates and reactants during the synthetic process. The obtained samples were characterized using X-ray diffraction, scanning and transmission electron microscopies and X-ray photoelectron, energy-dispersive X-ray, Fourier transform infrared, diffuse reflectance and photoluminescence spectroscopies. The photocatalytic activities were evaluated using the degradation of rhodamine B and tetracycline under visible light irradiation. The photocatalytic efficiency of BiOBr photocatalyst synthesized using single-molecule ionic liquid as template is better than that of BiOBr obtained using polyionic liquid as template. A possible photocatalytic mechanism is also provisionally proposed. And the degradation rate using BiOBr-IL-1 was 2.74, 1.24 and 4.84 times higher than that using BiOBr-IL-2, BiOBr-IL-3 and BiOBr-KBr. The larger surface area and narrower energy band gap of BiOBr-IL-1 could improve the visible light harvesting ability and facilitate the separation of photogenerated electron-hole pairs and the photocatalysis process. This study affords a facile way to develop such novel photocatalysts with special morphology using ionic liquids.
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