Electrocatalysis on nanoscale ruthenium-based material manufactured by carbonyl decomposition

被引：42

作者：

Le Rhun, V ^{[1
]}

Garnier, E ^{[1
]}

Pronier, S ^{[1
]}

Alonso-Vante, N ^{[1
]}

机构：

[1] Univ Poitiers, Lab Electrocatalysis, CNRS, UMR 6503, F-86022 Poitiers, France

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2000年 / 2卷 / 07期

关键词：

nanomaterial; ruthenium; solvents; oxygen reduction; carbonyl;

D O I：

10.1016/S1388-2481(00)00066-7

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical characteristics of ruthenium-based particles synthesised from carbonyl chemical precursors in two solvent media are reported. Transmission electron microscopy (TEM) measurements revealed that this material in powder form, synthesised as described, is in the nanoscale range. Its reactivity with air depends on the solvent used in the manufacture of the powder. Micro-diffraction data revealed the nanocrystalline nature of the powder particles as well as the process leading to an amorphous state (oxide-like phase formation) when oxygen co-ordinates with the nanoscale ruthenium. This phenomenon influences the electrocatalytic process for the molecular oxygen reduction in acid medium. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：475 / 479

页数：5

共 35 条

[11]

Ko MJ, 1998, ADV MATER OPT ELECTR, V8, P173, DOI 10.1002/(SICI)1099-0712(1998070)8:4<173::AID-AMO351>3.0.CO

[12]

2-Q

[13] Metal nanoparticles for the catalytic synthesis of carbon nanotubes [J].

Laurent, C ;

Flahaut, E ;

Peigney, A ;

Rousset, A .

NEW JOURNAL OF CHEMISTRY, 1998, 22 (11) :1229-1237

[14]

LeGratiet B, 1996, J CATAL, V164, P36

[15]

LERHUN V, UNPUB ELECTROCHEM SY

[16] Metal (Fe, Co, Ni) nanoparticles in silica gels:: Preparation and magnetic properties [J].

Lutz, T ;

Estournès, C ;

Guille, JL .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1998, 13 (1-3) :929-932

[17] Dielectric properties and potential applications of nanocrystal networks [J].

Marquardt, P .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 68 (02) :211-224

[18] Transition metal nanoparticles protected by amphiphilic block copolymers as tailored catalyst systems [J].

Mayer, ABR ;

Mark, JE .

COLLOID AND POLYMER SCIENCE, 1997, 275 (04) :333-340

[19] PARTICLE-SIZE EFFECTS IN ELECTROCATALYSIS BY UNIFORM COLLOIDS OF RUTHENIUM DIOXIDE HYDRATE [J].

MCMURRAY, HN .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (39) :9861-9864

[20] Methanol dehydrogenation in the liquid phase with Ru/active carbon catalyst [J].

Meng, N ;

Yamakawa, T ;

Shinoda, S .

REACTION KINETICS AND CATALYSIS LETTERS, 1996, 58 (02) :341-348

← 1 2 3 4 →