Oxidation of solid gold in chloroform solutions of cetyltrimethylammonium bromide

被引：14

作者：

Mortier, T ^{[1
]}

Persoons, A ^{[1
]}

Verbiest, T ^{[1
]}

机构：

[1] Catholic Univ Louvain, Dept Chem, B-3001 Heverlee, Belgium

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2005年 / 8卷 / 12期

关键词：

gold; cetyltrimethylammonium bromide; sonication; nanoparticles;

D O I：

10.1016/j.inoche.2005.08.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

oxidation of solid gold was studied in chloroform solutions of cetyltrimethylammonium bromide (CTAB). We observed that, upon sonication, solid gold is oxidized and cetyltrimethylammonium tetrabromo aurate is formed. The Br- ions act as a nucleophile that lowers the reduction potential of gold and molecular oxygen from the air acts as an oxidant. Addition of hydrazine to the sonicated solution leads to the formation of gold nanoparticles dispersed in chloroform. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1075 / 1077

页数：3

共 12 条

[1] ANODIC-DISSOLUTION OF SILVER, COPPER, PALLADIUM AND GOLD IN DIMETHYLSULFOXIDE-HALIDE SOLUTIONS [J].

BENARI, MD ;

HEFTER, GT ;

PARKER, AJ .

HYDROMETALLURGY, 1983, 10 (03) :367-389

[2] SYNTHESIS OF THIOL-DERIVATIZED GOLD NANOPARTICLES IN A 2-PHASE LIQUID-LIQUID SYSTEM [J].

BRUST, M ;

WALKER, M ;

BETHELL, D ;

SCHIFFRIN, DJ ;

WHYMAN, R .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (07) :801-802

[3] PHYSICOCHEMICAL PROPERTIES OF SMALL METAL PARTICLES IN SOLUTION - MICROELECTRODE REACTIONS, CHEMISORPTION, COMPOSITE METAL PARTICLES, AND THE ATOM-TO-METAL TRANSITION [J].

HENGLEIN, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (21) :5457-5471

[4] Kinetics and thermodynamics of Au colloid monolayer self-assembly - Undergraduate experiments in surface and nanomaterials chemistry [J].

Keating, CD ;

Musick, MD ;

Keefe, MH ;

Natan, MJ .

JOURNAL OF CHEMICAL EDUCATION, 1999, 76 (07) :949-955

[5]

KUMAR S, 2002, B MATER SCI, V25, P581

[6]

NAKAO Y, 1991, J CHEM RES-S, P228

[7] DISSOLUTION OF NOBLE-METALS IN HALOGEN HALIDE POLAR ORGANIC-SOLVENT SYSTEMS [J].

NAKAO, Y .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (05) :426-427

[8] PREPARATION OF A GOLD ORGANOSOL IN CHLOROFORM AND ITS DISCOLORATION BY PHOTOIRRADIATION [J].

NAKAO, Y .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (18) :2067-2068

[9] Nucleophile induced dissolution of gold [J].

Pal, T ;

Jana, NR ;

Sau, TK .

CORROSION SCIENCE, 1997, 39 (05) :981-986

[10]

Puddephatt R. J., 1978, The chemistry of gold

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