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Hollow cobalt ferrite–polyaniline nanofibers as magnetically separable visible-light photocatalyst for photodegradation of methyl orange

Paper ID Volume ID Publish Year Pages File Format Full-Text
26273 43943 2016 9 PDF Available
Title
Hollow cobalt ferrite–polyaniline nanofibers as magnetically separable visible-light photocatalyst for photodegradation of methyl orange
Abstract

•The hollow CoFe2O4–PANI nanofibers facilitate the optical properties by easily capturing visible light.•Core–shell mesoporous structure in the CoFe2O4–PANI is efficient in photocatalysis.•The recovery ratio is the same after three cycles under visible light irradiation for hollow CoFe2O4–PANI nanofibers.

Hollow cobalt ferrite–polyaniline nanofibers (CoFe2O4–PANI) functioning as a photocatalyst were prepared by using electrospinning technique, followed by calcination and in-situ chemical oxidative polymerization. The hollow CoFe2O4–PANI nanofibers with one dimensional (1D) structure provide well-developed mesoporous structure and enhanced electrical conductivity. The hollow CoFe2O4–PANI nanofibers consisted of hollow core-double shell nanostructure, which has CoFe2O4 as inner shell and PANI as outer shell. The hollow CoFe2O4–PANI nanofibers coated with PANI nanograins facilitate the optical properties by easily capturing visible light. The intensive visible light absorption and effective charge separation lead to a remarkable improvement of visible light photocatalysis owing to the heterojunction built between CoFe2O4 and PANI. The pseudo-first-order kinetic constant of photocatalytic degradation of the methyl orange (MO) dye under visible light irradiation with CoFe2O4–PANI was 80 times greater than CoFe2O4. This evidence shows the advantage of the unique core–shell mesoporous structure in the CoFe2O4–PANI for efficient photocatalysis. The recovery ratio is almost the same after three cycles under visible light irradiation, displaying the excellent characteristics of magnetic separation for CoFe2O4–PANI hollow nanofibers.

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Keywords
Hollow nanofibers; Cobalt ferrite; Polyanilne; Photocatalysis; Magnetic separation; Visible light absorption
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Hollow cobalt ferrite–polyaniline nanofibers as magnetically separable visible-light photocatalyst for photodegradation of methyl orange
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 321, 1 May 2016, Pages 257–265
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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