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Facile aqueous synthesis of Bi4O5Br2 nanosheets for improved visible-light photocatalytic activity
- Source :
- Ceramics International. 44:5392-5401
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Bi4O5Br2 nanosheets have been fast synthesized via a facile aqueous method. The morphology, crystal structure, optical property, and electronic structure of the obtained samples were discussed. During the reaction process, it was found that the reaction parameters including the amount of NaBr and the amount of NaOH significantly influenced the composition and structure of the samples. The photocatalytic performance of the prepared samples was explored by degrading BPA under visible-light irradiation. Bi4O5Br2 nanosheets exhibited enhanced photocatalytic activity in comparison to BiOBr or Bi5O7Br, which can be attributed to its higher visible-light absorption and lower interface charge transport resistance. Additionally, the photocatalytic degradation mechanism over Bi4O5Br2 nanosheets was also investigated. h+ and •O2− were the main photoactive species during the visible-light photocatalytic process by quencher experiments and EPR results. This study is expected to provide new insights into the development on facile fabrication and potential application of Bi-deficient bismuth oxybromide photocatalysts.
- Subjects :
- Fabrication
Materials science
Aqueous solution
Process Chemistry and Technology
02 engineering and technology
Electronic structure
Crystal structure
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
Chemical engineering
law
Materials Chemistry
Ceramics and Composites
Photocatalysis
Irradiation
Absorption (chemistry)
0210 nano-technology
Electron paramagnetic resonance
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 44
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........6698d56cec776e16dcf80a2e5006a95a