Journal
OPTIK
Volume 178, Issue -, Pages 36-44Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2018.10.018
Keywords
alpha-Fe2O3; Photocatalytic degradation; Acetochlor
Categories
Funding
- HI-Tech Research and development program (863) of China [2012AA030314-2]
- Fundamental Research Funds for the Central Universities [N160504001]
Ask authors/readers for more resources
Photocatalytic degradation technology is an important and promising method for complete elimination of toxic organics. In this study, the photocatalytic degradation of acetochlor using alpha-Fe2O3 nanoparticles under H2O2/UV system was studied with UV-Vis spectrophotometer and GC MS. The degradation rate was investigated on the effects of alpha-Fe2O3 morphology and dosage, initial acetochlor concentration, solution pH, and H2O2 dosage. The results showed that photo catalytic degradation efficiency could reach 91% by alpha-Fe2O3 with 200 mg/L hollow morphology at an initial acetochlor concentration, pH value, and H2O2 dosage of 50 mg/L, 7 and 40 mu L, respectively. The photocatalytic reaction mechanism and degradation process of acetochlor by alpha-Fe2O3 were investigated and the degradation pathway of acetochlor was proposed. The oxidative attack involves N-C bond connecting the aromatic ring with side chain, the nitrogen-containing side chain, chlorinated aliphatic to produce 1-methyl-3-wing-benzene, allyl-methyl-amine and 1-chloro-2-ethoxy-ethane. These intermediate products could be further oxidized to NO3-, CO2 and H2O. These findings provide new insights for the photocatalytic degradation of organic pollutants in the using alpha-Fe2O3 nanoparticles to achieve pollutant degradation.
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