Journal
RSC ADVANCES
Volume 7, Issue 4, Pages 1966-1974Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra26078k
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21277051, 21577039]
- Science and Technology Planning Project of Guangdong Province, China [2015A020215004]
- Fundamental Research Funds for the Central Universities, SCUT [2015ZQ08, 2015KXKYJ07]
Ask authors/readers for more resources
Mesoporous SiO2/Bi2O3/TiO2 triple-layered thin films were prepared on glass slides using a simple sol-gel/spin-coating method. For comparison, double-layered Bi2O3/TiO2 and mixed Bi2O3-TiO2 thin films were prepared using the same method. The obtained samples were characterized by X-ray diffraction (XRD), UV-vis spectrophotometry (UV-vis), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and contact angle measurements. Methyl orange was used as a model pollutant to evaluate the photocatalytic properties of the thin films. The self-cleaning properties of the thin films were investigated by tracking the photocatalytic removal of stearic acid. The mesoporous SiO2/Bi2O3/ TiO2 multi-layered thin films retained the mesoporous structure of SiO2, demonstrating superhydrophilicity and antifogging ability even in the dark, as well as more efficient photocatalytic behavior than double-layered Bi2O3/TiO2 and mixed Bi2O3-TiO2 thin films when illuminated with weak UV light irradiation. Moreover, the thin films resisted both acidic and alkali corrosion of the type they might encounter in the natural environment.
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