Anchoring metal nanoparticles on hydrofluoric acid treated multiwalled carbon nanotubes as stable electrocatalysts

被引：60

作者：

Li, Yongliang ^{[2
]}

Hu, Feng Ping ^{[2
]}

Wang, Xin ^{[1
]}

Shen, Pei Kang ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 639798, Singapore

[2] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 07期

关键词：

multiwalled carbon nanotubes (MWCNTs); electrocatalyst; fuel cells; methanol oxidation; hydrofluoric acid; nanoparticle;

D O I：

10.1016/j.elecom.2008.05.025

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We attempted the treatment of multiwalled carbon nanotubes (MWCNTs) in hydrofluoric acid (HF) aqueous solution for depositing Pt nanoparticles as catalysts for methanol oxidation for the first time. The preliminary results revealed that the Pt nanoparticles could be well dispersed on HF treated MWCNTs and gave enhanced activity and stability for methanol oxidation. As demonstrated in this study, the Pt supported on HF treated MWCNTs catalyst gave over doubled current density than that of Pt supported on as-received MWCNTs for methanol oxidation at the same Pt loadings. The enhancement in the stability of the Pt supported on HF treated MWCNTs catalyst for methanol oxidation is believed due to the stronger interaction between Pt nanoparticles and MWCNTs. This study opens promising possibilities for anchoring metal nanoparticles on the walls of the MWCNTs uniformly and stably. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1101 / 1104

页数：4

共 44 条

[1] Polymer-grafted multiwalled carbon nanotubes through surface-initiated polymerization [J].

Baskaran, D ;

Mays, JW ;

Bratcher, MS .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (16) :2138-2142

[2] P-type macroporous silicon for two-dimensional photonic crystals [J].

Bettotti, P ;

Dal Negro, L ;

Gaburro, Z ;

Pavesi, L ;

Lui, A ;

Galli, M ;

Patrini, M ;

Marabelli, F .

JOURNAL OF APPLIED PHYSICS, 2002, 92 (12) :6966-6972

[3] Novel nanocomposite Pt/RuO2•xH2O/carbon nanotube catalysts for direct methanol fuel cells [J].

Cao, Lin ;

Scheiba, Frieder ;

Roth, Christina ;

Schweiger, Franz ;

Cremers, Carsten ;

Stimming, Ulrich ;

Fuess, Hartmut ;

Chen, Liquan ;

Zhu, Wentao ;

Qiu, Xinping .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (32) :5315-5319

[4] Alternative supports for the preparation of catalysts for low-temperature fuel cells: the use of carbon nanotubes [J].

Carmo, M ;

Paganin, VA ;

Rosolen, JM ;

Gonzalez, ER .

JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :169-176

[5] The nanocomposites of carbon nanotube with Sb and SnSb0.5 as Li-ion battery anodes [J].

Chen, WX ;

Lee, JY ;

Liu, ZL .

CARBON, 2003, 41 (05) :959-966

[6] Visible light emission from macroporous Si [J].

Cheylan, S. ;

Trifonov, T. ;

Rodriguez, A. ;

Marsal, L. F. ;

Pallares, J. ;

Alcubilla, R. ;

Badenes, G. .

OPTICAL MATERIALS, 2006, 29 (2-3) :262-267

[7] PREPARATION OF PLATINUM SUPPORTED ON PREGRAPHITIZED CARBON-BLACKS [J].

COLOMA, F ;

SEPULVEDAESCRIBANO, A ;

FIERRO, JLG ;

RODRIGUEZREINOSO, F .

LANGMUIR, 1994, 10 (03) :750-755

[8] High dispersion and electrocatalytic properties of platinum on functional multi-walled carbon nanotubes [J].

Guo, DJ ;

Li, HL .

ELECTROANALYSIS, 2005, 17 (10) :869-872

[9] Studies on the anode catalysts of carbon nanotube for DMFC [J].

Han, KI ;

Lee, JS ;

Park, SO ;

Lee, SW ;

Park, YW ;

Kim, H .

ELECTROCHIMICA ACTA, 2004, 50 (2-3) :791-794

[10] Reactivity of different kinds of carbon during oxidative purification of catalytically prepared carbon nanotubes [J].

Hernadi, K ;

Siska, A ;

Thiên-Nga, L ;

Forró, L ;

Kiricsi, I .

SOLID STATE IONICS, 2001, 141 :203-209

← 1 2 3 4 5 →