fulltext.study @t Gmail

Transformation and reduction of androgenic activity of 17α-methyltestosterone in Fe3O4/MWCNTs–H2O2 system

Paper ID Volume ID Publish Year Pages File Format Full-Text
46274 46436 2012 8 PDF Available
Title
Transformation and reduction of androgenic activity of 17α-methyltestosterone in Fe3O4/MWCNTs–H2O2 system
Abstract

A heterogeneous Fenton catalyst, multiwalled carbon nanotubes (MWCNTs)–supported Fe3O4 nanoparticles, Fe3O4/MWCNTs was evaluated through the adsorption and degradation of a trace steroidal endocrine disrupting compound (EDC) 17α-methyltestosterone (MT) in water and in the presence of H2O2, respectively. The androgenic activity of the treated water was investigated during the catalytic reactions by human androgen ELISA test. The degradation mechanism of MT by Fe3O4/MWCNTs catalysis was discussed on the basis of GC–MS analysis of the intermediates and the theoretical calculation of frontier electron densities and bond dissociation enthalpies of CH and OH of MT molecule. Competitive oxidation could help to understand that the adsorption of trace MT onto the catalyst was favorable to MT degradation by OH, which was confirmed by electron spin resonance spin-trapping technique. The results showed that Fe3O4/MWCNTs–H2O2 system could not only degrade MT but also remove its androgenic activity. The novel catalyst would be of potential application in water treatment for removing natural and synthetic hydrophobic trace pollutants.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Competitive oxidation was discussed to explain the adsorption–degradation kinetic mechanism. ► The degradation mechanism was proposed based on the intermediates and the Gaussian calculation. ► The change of androgenic activity of the water was investigated during the catalytic reactions.

Keywords
Fe3O4/MWCNTs nanocomposites; Heterogeneous Fenton; 17α-Methyltestosterone; Degradation mechanism; Androgenic activity
First Page Preview
Transformation and reduction of androgenic activity of 17α-methyltestosterone in Fe3O4/MWCNTs–H2O2 system
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 127, 30 October 2012, Pages 167–174
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us