Journal
CHEMICAL ENGINEERING JOURNAL
Volume 162, Issue 1, Pages 171-177Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2010.05.024
Keywords
Sr6Bi2O9; Bismuth; Sol-gel method; 4BS; Visible light; Photocatalytic activity
Categories
Funding
- Chinese Ministry of Education [108164]
- National Basic Research Program of China (973 Program) [2007CB613302]
- National Natural Science Foundation of China [50872103]
- SRF for ROCS, SEM
Ask authors/readers for more resources
Sr6Bi2O9 powders were synthesized by a sal-gel method using Bi(NO3)(3)center dot 5H(2)O and Sr(NO3)(2) as the starting materials and were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectrum (UV-vis DRS), Fourier transform infrared (FT-IR) spectrum and Raman spectrum. The as-prepared Sr6Bi2O9 powders showed an efficient photocatalytic activity in the decomposition of 4BS dye (a widely used azo dye) and 4-nitrophenol (4-NP, a priority pollutant) under visible light irradiation (A > 400 nm). TA-PL analysis reveals that HO center dot was not the dominant photooxidant. The radical scavengers experiments indicated that the main active species was O-2 in the photocatalytic degradation of dye under visible irradiation. A possible photodegradation mechanism of organic pollutants by the visible light driven Sr6Bi2O9 was discussed. (C) 2010 Elsevier B.V. All rights reserved.
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