Preparation, characterization, and surface modification of silver particles

被引:210
作者
Kapoor, S [1 ]
机构
[1] Bhabha Atom Res Ctr, Div Chem, Bombay 400085, Maharashtra, India
关键词
D O I
10.1021/la9705827
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Colloidal silver has been formed either by irradiation with 253.7 nm lighter by chemical reduction of AgClO4 in the presence of protective agents such as poly(vinylpyrrolidone), carboxy methyl cellulose, and gelatin. The particles were characterized by their absorption maximum and transmission electron micrographs. Peptization effect was observed in the presence of photosensitive benzophenone. Surface modification studies of silver particles in the presence of various complexing agents, viz., N-(hydoxyethyl)-ethylenediaminetriacetic acid, iminodiacetic acid, nitrilotriacetic: acid, 2-mercaptobenzimidazole, benzo-triazole, 5-aminotetrazole, imidazole, and sanazole were carried out and it was shown that the reactivity of silver particles increases in their presence. However, in the presence of stabilizers, due to competitive reactions, partial recovery of the surface plasmon absorption band was observed. The Fermi potential of surface modified silver particles seems to lie in the range of -0.40 +/- 0.05 V.
引用
收藏
页码:1021 / 1025
页数:5
相关论文
共 32 条
[1]  
[Anonymous], THEORY PHOTOGRAPHIC
[2]   ABSORPTION OF LIGHT BY COLLOIDS IN ALKALI HALIDE CRYSTALS [J].
DOYLE, WT .
PHYSICAL REVIEW, 1958, 111 (04) :1067-1072
[3]   OPTICAL-SPECTRUM AND SOME CHEMICAL-PROPERTIES OF COLLOIDAL THALLIUM IN AQUEOUS-SOLUTION [J].
ERSHOV, BG ;
HENGLEIN, A .
JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (13) :3434-3436
[4]   PREPARATION OF ORGANO PALLADIUM SOLS FROM PALLADIUM COMPLEXES IN VARIOUS ALCOHOLS [J].
ESUMI, K ;
ITAKURA, T ;
TORIGOE, K .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1994, 82 (01) :111-113
[5]   THE ULTRAVIOLET ABSORPTION OF BENZOTRIAZOLE [J].
FAGEL, JE ;
EWING, GW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (09) :4360-4362
[6]   PHOTOCHEMISTRY OF COLLOIDAL SEMICONDUCTORS .31. PREPARATION AND PHOTOLYSIS OF CDS SOLS IN ORGANIC-SOLVENTS [J].
FISCHER, CH ;
HENGLEIN, A .
JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (14) :5578-5581
[7]   METAL-BINDING ABILITIES OF ANTIBACTERIAL HETEROCYCLIC THIONES [J].
FOYE, WO ;
LO, JR .
JOURNAL OF PHARMACEUTICAL SCIENCES, 1972, 61 (08) :1209-&
[8]   INFRARED-ABSORPTION BY SURFACE PHONONS AND SURFACE PLASMONS IN SMALL CRYSTALS [J].
GENZEL, L ;
MARTIN, TP .
SURFACE SCIENCE, 1973, 34 (01) :33-49
[9]   FORMATION OF COLLOIDAL SILVER BY PUSH-PULL REDUCTION OF AG+ [J].
GUTIERREZ, M ;
HENGLEIN, A .
JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (44) :11368-11370
[10]   ELECTROMODULATION OF OPTICAL PROPERTIES OF GOLD [J].
HANSEN, WN ;
PROSTAK, A .
PHYSICAL REVIEW, 1968, 174 (02) :500-&