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

被引：43

作者：

Zheng, Min ^{[1
]}

Li, Pan ^{[1
]}

Fu, Gengtao ^{[1
]}

Chen, Yu ^{[1
]}

Zhou, Yiming ^{[1
]}

Tang, Yawen ^{[1
]}

Lu, Tianhong ^{[1
]}

机构：

[1] Nanjing Normal Univ, Coll Chem & Mat Sci, Lab Electrochem, Jiangsu Key Lab New Power Batteries, Nanjing 210046, Jiangsu, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2013年 / 129卷

关键词：

Carbon nanotubes; Noncovalent functionalization; Phosphonic acid groups; Solubilization; Formic acid electrooxidation; SELF-ASSEMBLED MONOLAYERS; SUPPORTED PD NANOPARTICLES; FORMIC-ACID; HOMOGENEOUS PRECIPITATION; ELECTROCHEMICAL DETECTION; BIMETALLIC NANOPARTICLES; CATALYTIC-ACTIVITY; GOLD ELECTRODE; HYDROGEN; SURFACE;

D O I：

10.1016/j.apcatb.2012.09.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A facile noncovalent approach is proposed to graft phosphonate groups onto the surface of the multiwall carbon nanotubes (MWCNTs) by pi-pi 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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：394 / 402

页数：9

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