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Efficient anchorage of highly dispersed and ultrafine palladium nanoparticles on the water-soluble phosphonate functionalized multiwall carbon nanotubes

Paper ID Volume ID Publish Year Pages File Format Full-Text
46021 46428 2013 9 PDF Available
Title
Efficient anchorage of highly dispersed and ultrafine palladium nanoparticles on the water-soluble phosphonate functionalized multiwall carbon nanotubes
Abstract

A facile noncovalent approach is proposed to graft phosphonate groups onto the surface of the multiwall carbon nanotubes (MWCNTs) by π–π stacking interaction between naphthalen-1-ylmethylphosphonic acid (NYPA) and MWCNTs. Noncovalently attachment of phosphonate groups on the MWCNTs surface is confirmed by Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and zeta potential analysis. The water-soluble phosphonate functionalized MWCNTs are further deposited with Pd nanoparticles (Pd-NPs) as electrocatalyst for formic acid oxidation. The morphology and structure of Pd-MWCNTs nanocomposites are characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and XPS measurements. It is observed that Pd-NPs are highly dispersed and effectively anchored on the side walls of the phosphonate functionalized MWCNTs. The Pd-MWCNTs nanocomposites exhibit better electrocatalytic activity and long-term stability for formic acid electrooxidation than the un-phosphonated counterpart.

Graphical abstractThe water-soluble phosphonate functionalized MWCNTs are deposited with Pd nanoparticles (Pd-NPs) as electrocatalyst for formic acid oxidation.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A facile noncovalent approach is proposed to graft phosphonate groups onto the MWCNTs surface. ► The phosphonate functionalized MWCNTs are further deposited with Pd nanoparticles. ► Pd nanoparticles are highly dispersed and effectively anchored on the MWCNTs surface. ► Pd/NYPA-MWCNTs catalyst shows excellent electrocatalytic activity for formic acid oxidation.

Keywords
Carbon nanotubes; Noncovalent functionalization; Phosphonic acid groups; Solubilization; Formic acid electrooxidation
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Efficient anchorage of highly dispersed and ultrafine palladium nanoparticles on the water-soluble phosphonate functionalized multiwall carbon nanotubes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 129, 17 January 2013, Pages 394–402
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