fulltext.study @t Gmail

Polypyrrole nanotube-supported gold nanoparticles: An efficient electrocatalyst for oxygen reduction and catalytic reduction of 4-nitrophenol

Paper ID Volume ID Publish Year Pages File Format Full-Text
41113 45877 2012 8 PDF Available
Title
Polypyrrole nanotube-supported gold nanoparticles: An efficient electrocatalyst for oxygen reduction and catalytic reduction of 4-nitrophenol
Abstract

Polypyrrole nanotubes (PPyNTs)/Au nanoparticle hybrids were synthesized by using covalently attached imidazolium-type ionic liquids (ILs) as linkers. The approach involves the surface functionalization of PPyNTs with ILs, anion-exchange with Au precursor and followed by the reduction of metal ions to produce the Au nanoparticles. The surface functionalized ILs on the PPyNTs surface play an important role in the formation of Au/ILs/PPyNTs hybrids. The synthesized Au nanoparticles supported on the ILs/PPyNTs surface have a smaller particle size and better dispersion than those on pristine PPyNTs surface. The morphology and optical properties of the produced nanohybrids were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectrometer, X-ray diffraction (XRD) and UV–vis spectroscopy. The catalytic performances of Au/ILs/PPyNTs hybrids were evaluated for both the electrocatalytic oxygen reduction and catalytic reduction of 4-nitrophenol in the presence of NaBH4. The results revealed that the Au/ILs/PPyNTs hybrids are effective electrocatalysts for dioxygen reduction and for the reduction of 4-nitrophenol.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (131 K)Download as PowerPoint slideHighlights► We fabricate polypyrrole nanotube/Au nanoparticle hybrids. ► We characterize the catalytic performances of resultant nanoparticle hybrids. ► The synthesized nanoparticle hybrids are effective for dioxygen electroreduction. ► The resultant nanoparticle hybrids are effective in the reduction of 4-nitrophenol.

Keywords
Polypyrrole nanotubes; Ionic liquids; Gold nanoparticles; Oxygen reduction; 4-Nitrophenol
First Page Preview
Polypyrrole nanotube-supported gold nanoparticles: An efficient electrocatalyst for oxygen reduction and catalytic reduction of 4-nitrophenol
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 A: General - Volumes 413–414, 31 January 2012, Pages 230–237
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