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.
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收藏
页码：394 / 402
页数：9
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