Journal
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Volume 30, Issue 3, Pages 765-773Publisher
ELSEVIER
DOI: 10.1016/S1003-6326(20)65252-9
Keywords
calcination; BiOX (X=Cl,Br) photocatalyst; microstructure; photocatalytic activity
Categories
Funding
- National Natural Science Foundation of China [21676178, 21506144, 21706179]
- Science and Technology Innovation Program of Higher Education Institutions in Shanxi Province, China [2019L0138]
- Natural Science Foundation of Shanxi Province for Young Scientists, China [201901D211100]
Ask authors/readers for more resources
A series of BiOX (X=Cl, Br) were prepared by simple hydrolysis and then calcined at various temperatures and they were characterized by XRD, Raman, SEM, DSC-TGA, BET and UV-Vis. The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under simulated solar light irradiation. The results show that the phase structure, crystallite size, morphology, specific surface area, porous structure, and the absorption band-edges are related to the calcination temperature. For BiOBr, it has completely transformed to Bi24O31Br10 at 600 degrees C and begins to transform to Bi2O3 at 800 degrees C. As for BiOCl, it begins to transform to Bi(24)O(31)Br(10 )at 600 degrees C and completely transforms to Bi24O31Br10 at 800 degrees C. Finally, the photocatalytic activity of BiOCl decreases with the temperature increasing owing to decrease of the specific surface areas and pore size, while the photocatalytic activity of BiOBr increases in the first stage and then decreases, which is related to good crystallization and three-dimensional structure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available