Abstract
Photocatalytic degradation of bisphenol A (2,2-bis(4-hydroxyphenyl)propane, BPA), a representative endocrine-disrupting compound, was carried out in the presence of the Ti-MCM-41 mesoporous molecular sieve in this investigation. The degradation rate was strongly dependent on those factors such as the catalyst, catalyst amount, radiation time, and pH value. The photolysis reaction was found to follow the Langmuir–Hinshelwood model. After the photocatalytic treatment, decomposition of BPA rendered five intermediates as follows: 2-methyl-2,3-dihydrobenzofuran, 4-hydroxyacetophenone, 1,1-diethoxyethane, isobutanol, and 3-methylbutanal, which could be the direct evidence supporting our proposal for the degradation mechanism.
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The study is supported by the Natural Science Foundation of Shanghai, China (grant no. 10ZR1421300).
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Figure S1
Initial reaction rate of BPA photocatalytic degradation versus initial BPA concentration (pH 7; catalyst amount, 0.1 g/L) (GIF 76 kb)
Figure S2
GC–MS total ion chromatograms of BPA degradation product (GIF 249 kb)
Figure S3
Mass spectra of five authentic compounds (GIF 509 kb)
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Tao, H., Hao, S., Chang, F. et al. Photodegradation of Bisphenol A by Titana Nanoparticles in Mesoporous MCM-41. Water Air Soil Pollut 214, 491–498 (2011). https://doi.org/10.1007/s11270-010-0440-y
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DOI: https://doi.org/10.1007/s11270-010-0440-y