Open AccessTEM INVESTIGATION ON SILVER SOLS AFTER ADDITION OF KCl
Author(s) -
Yan Fang,
Weining Wu,
Ni Dong-Hai,
Fu Shi-You,
Pengxiang Zhang
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.46
Subject(s) - colloid , transmission electron microscopy , materials science , adsorption , colloidal particle , molecule , chemical engineering , layer (electronics) , silver nanoparticle , nanotechnology , inorganic chemistry , nanoparticle , chemistry , organic chemistry , engineering
The influence of adding KCI on the silver sols was studied by transmission electron microscopy (TEM). It was found that the Ag atoms on the surfaces of the colloidal silver particles were transported to other positions of the silver surfaces after adding KCI, and the sur-feccs of colloidal silver particles were covered with an atomic group layer which had some kind of structure. At the same time, a chain-like colloidal aggregation in Ag sols was induced by KCI. This was compared with the case of adding pyridine. Also we discussed the effect of adding KCI on the SERS signals of molecules adsorbed on colloidal silver particles.