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Efficient photodegradation of 4,4′-(propane-2,2-diyl)diphenol over biomolecule modified titanium dioxide under visible light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
51551 46847 2011 4 PDF Available
Title
Efficient photodegradation of 4,4′-(propane-2,2-diyl)diphenol over biomolecule modified titanium dioxide under visible light irradiation
Abstract

A novel biomolecule (urushiol) grafted Degussa P25 hybrid nanoparticle (UP25) was synthesized, and its structure was characterized. The UP25 hybrid nanoparticle showed high photoactivity under visible light irradiation (λ ≥ 420 nm). 4,4′-(propane-2,2-diyl)diphenol (Bisphenol A, BPA) can easily approach to UP25 surface through the hydrophobic channels between alkyl groups in urushiol. BPA degradation rate constants were 1.02 × 10− 3 min− 1 and 4.96 × 10− 3 min− 1 over P25 and UP25, respectively. Radical quenching experiments proved that the superoxide radical anion (O2−) mediated oxidation pathways were dominant for degradation of BPA.

► A new biomolecular semiconductor composite (urushiol modified TiO2) was synthesized. ► The reaction constant of BPA degradation increased by 4.9 times after modification. ► Superoxide radical mediated oxidation pathways were dominant for BPA degradation.

Keywords
BPA; Urushiol; Superoxides radical; TiO2
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Efficient photodegradation of 4,4′-(propane-2,2-diyl)diphenol over biomolecule modified titanium dioxide under visible light irradiation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 16, Issue 1, 30 November 2011, Pages 7–10
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us