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Cadmium Sulfide Aggregates through Reverse Micelles
Author(s) -
Chatterjee Minati,
Patra Amitava
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00857.x
Subject(s) - micelle , cyclohexane , pulmonary surfactant , absorbance , transmission electron microscopy , fourier transform infrared spectroscopy , particle size , analytical chemistry (journal) , critical micelle concentration , nanocrystalline material , materials science , cadmium sulfide , chemistry , chemical engineering , inorganic chemistry , chromatography , crystallography , organic chemistry , nanotechnology , aqueous solution , biochemistry , engineering
CdS aggregates, composed of primary nanocrystalline particles, were synthesized in cyclohexane‐sorbitan monooleate (Span 80) reverse micelles at 80°± 1°C under mechanical agitation and sonication with varying Cd 2+ concentrations in the solutions. The critical micelle concentration (CMC) of the surfactant Span 80 in cyclohexane was determined from discernible breaks in the surface tension and optical (ultraviolet) absorbance versus surfactant concentration curves. The synthesized aggregates were characterized using transmission electron microscopy, X‐ray diffractometry, particle‐size analysis, Fourier‐transform infrared spectroscopy, and thermal analyses. The generated aggregates exhibited the characteristic green emission at 520 nm. A minor decrease in emission intensity with increased aggregate size at the same wavelength was observed.