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Excellent performance of mesoporous Co3O4/MnO2 nanoparticles in heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions

Paper ID Volume ID Publish Year Pages File Format Full-Text
46293 46436 2012 6 PDF Available
Title
Excellent performance of mesoporous Co3O4/MnO2 nanoparticles in heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions
Abstract

Mesoporous α-MnO2 and its supported Co3O4 nanoparticles were synthesized, characterized and tested in heterogeneous activation of peroxymonosulfate (PMS) for phenol degradation in aqueous solution. α-MnO2 supported Co3O4 presented as nanorod particles and showed H2 redox reduction at low temperature. Bulk α-MnO2 and Co3O4 could activate peroxymonosulfate to generate sulfate radicals for phenol degradation but at low activity. Co3O4/MnO2 nanoparticles exhibited much high activity in peroxymonosulfate activation for phenol degradation with 100% conversion in 20 min and 3 wt% is the optimum Co loading. Phenol degradation followed a first order kinetics. Stability tests also showed that Co3O4/MnO2 presented stable performance in phenol degradation in several runs.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Mesoporous MnO2 exhibited activity in peroxymonosulfate (PMS) activation. ► Co/MnO2 nanoparticles presented better performance than Co2+/PMS in phenol degradation. ► Phenol degradation on Co/MnO2 followed first order kinetics.

Keywords
Mesoporous MnO2; Supported Co oxide; Advanced oxidation; Water treatment; Nanorod particles
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Excellent performance of mesoporous Co3O4/MnO2 nanoparticles in heterogeneous activation of peroxymonosulfate for phenol degradation in aqueous solutions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 127, 30 October 2012, Pages 330–335
Authors
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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
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Any Questions? feel free to contact us