Photocatalytic degradation properties of α-Fe2 O3 nanoparticles for dibutyl phthalate in aqueous solution system

Royal Society Open Science
Yue LiuGaowu Qin

Abstract

The phthalate ester compounds in industrial wastewater, as kinds of environmental toxic organic pollutants, may interfere with the body's endocrine system, resulting in great harm to humans. In this work, the photocatalytic degradation properties of dibutyl phthalate (DBP) were investigated using α-Fe2O3 nanoparticles and H2O2 in aqueous solution system. The optimal parameters and mechanism of degradation were discussed by changing the morphology and usage amount of catalysts, the dosage of H2O2, pH value and the initial concentration of DBP. Hollow α-Fe2O3 nanoparticles showed the highest degradation efficiency when 30 mg of catalyst and 50 µl of H2O2 were used in the DBP solution with the initial concentration of 13 mg l-1 at pH = 6.5. When the reaction time was 90 min, DBP was degraded 93% for the above optimal parameters. The photocatalytic degradation mechanism of DBP was studied by the gas chromatography-mass spectrometry technique. The result showed that the main degradation intermediates of DBP were ortho-phthalate monobutyl ester, methyl benzoic acid, benzoic acid, benzaldehyde, and heptyl aldehyde when the reaction time was 2 h. DBP and its intermediates were almost completely degraded to CO2 and H2O in 12 h in the α-...Continue Reading

References

Oct 1, 1987·The Science of the Total Environment·T J Wams
Aug 25, 2011·Journal of the American Chemical Society·Monica BarrosoJames R Durrant
Dec 19, 2013·Chemistry, an Asian Journal·Kaliyappan KarthikeyanYun Sung Lee

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Citations

Apr 30, 2019·Royal Society Open Science·Anoja SenthilnathanK M Nalin de Silva
May 28, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Zhiqiang DingJianshe Hu
Dec 15, 2020·Journal of Environmental Health Science & Engineering·Idrees KhanKhalid Saeed
Feb 19, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mahboobeh DehvariMehdi Ahmadi

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Methods Mentioned

BETA
light scattering

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