Preparation of nanosized metallic particles in polyaniline

被引:129
作者
Wang, JG [1 ]
Neoh, KG [1 ]
Kang, ET [1 ]
机构
[1] Natl Univ Singapore, Dept Chem & Environm Engn, Singapore 119260, Singapore
关键词
polyaniline; metal salt reduction; gold; palladium; metal nanoparticles;
D O I
10.1006/jcis.2001.7576
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
The preparation of nanosized gold and palladium particles in polyaniline has been carried out via the reduction of AuCl3 or Pd(NO3)(2) by polyaniline in either aqueous media or N-methylpyrrolidinone (NMP), When the reduction of AuCl3 was carried out in NMP solutions of polyaniline, the Au particles were on the order of 20 nm, The reduction of AuCl3 or Pd(NO3)(2) by polyaniline in the powder form in aqueous media resulted in the accumulation of the elemental Au or Pd on the surface of the polyaniline particles. Subsequent dissolution of the polyaniline in NMP resulted in metal particles of about 50 to 200 nm being dispersed in the NMP solution of polyaniline. The rate of metal salt reduction and the size of the metal particles were found to be strongly dependent on the medium used, the initial ratio of metal ions to polyaniline, and the reaction time. The polyaniline-metal particle systems were characterized using X-ray photoelectron spectroscopy, UV-visible absorption spectroscopy, and FTIR spectroscopy, Scanning and transmission electron microscopy and laser light scattering were used to determine the size of the metal particles in polyaniline. (C) 2001 Academic Press.
引用
收藏
页码:78 / 86
页数:9
相关论文
共 26 条
[1]   SPECTROSCOPIC AND ELECTRICAL CHARACTERIZATION OF SOME ANILINE OLIGOMERS AND POLYANILINE [J].
CAO, Y ;
LI, SZ ;
XUE, ZJ ;
GUO, D .
SYNTHETIC METALS, 1986, 16 (03) :305-315
[2]   THE ELECTRODEPOSITION OF METALS ONTO POLYPYRROLE FILMS FROM AQUEOUS-SOLUTION [J].
CHANDLER, GK ;
PLETCHER, D .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 1986, 16 (01) :62-68
[3]  
CHASTAIN J, 1992, HDB XRAY PHOTOELECTR, P119
[4]   OXIDATION OF FORMIC-ACID AT PLATINUM MICROPARTICLES DISPERSED IN A POLYANILINE MATRIX - INFLUENCE OF LONG-RANGE ORDER AND METAL-POLYMER INTERACTION [J].
GHOLAMIAN, M ;
CONTRACTOR, AQ .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 289 (1-2) :69-83
[5]   Electrochemical formation of Au clusters in polyaniline [J].
Hatchett, DW ;
Josowicz, M ;
Janata, J ;
Baer, DR .
CHEMISTRY OF MATERIALS, 1999, 11 (10) :2989-2994
[6]   PREPARATION AND ELECTROCATALYTIC PROPERTIES OF CONDUCTING FILMS OF POLYPYRROLE CONTAINING PLATINUM MICROPARTICULATES [J].
HOLDCROFT, S ;
FUNT, BL .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 240 (1-2) :89-103
[7]   Palladium-containing polyaniline and polypyrrole microparticles [J].
Huang, SW ;
Neoh, KG ;
Kang, ET ;
Han, HS ;
Tan, KL .
JOURNAL OF MATERIALS CHEMISTRY, 1998, 8 (08) :1743-1748
[8]   NEW NANOCOMPOSITES OF POLYPYRROLE INCLUDING GAMMA-FE2O3 PARTICLES - ELECTRICAL AND MAGNETIC CHARACTERIZATIONS [J].
JARJAYES, O ;
FRIES, PH ;
BIDAN, G .
SYNTHETIC METALS, 1995, 69 (1-3) :343-344
[9]   ELECTROLESS RECOVERY OF PRECIOUS METALS FROM ACID-SOLUTIONS BY N-CONTAINING ELECTROACTIVE POLYMERS [J].
KANG, ET ;
TING, YP ;
NEOH, KG ;
TAN, KL .
SYNTHETIC METALS, 1995, 69 (1-3) :477-478
[10]   ELECTRODEPOSITION AND ELECTROCHEMICAL-BEHAVIOR OF PALLADIUM PARTICLES AT POLYANILINE AND POLYPYRROLE FILMS [J].
LEONE, A ;
MARINO, W ;
SCHARIFKER, BR .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (02) :438-443