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Induction Time of Reaction Crystallization of Silver Nanoparticles
Author(s) -
Ghader S.,
Manteghian M.,
Kokabi M.,
Mamoory R. S.
Publication year - 2007
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700154
Subject(s) - supersaturation , nucleation , induction period , silver nitrate , crystallization , surface tension , silver nanoparticle , nanoparticle , chemistry , absorption (acoustics) , inorganic chemistry , hydrate , chemical engineering , thermodynamics , materials science , nuclear chemistry , nanotechnology , organic chemistry , catalysis , physics , engineering , composite material
This paper describes the measurement of induction time in the reaction crystallization of silver nanoparticles at different temperatures and supersaturations, and compares it with classical nucleation theory. Silver nanoparticles are synthesized by a reaction of silver nitrate with hydrazine in the presence of sodium citrate as stabilizer. Induction time is estimated from an absorption‐time graph obtained by monitoring the absorption of the solution after creation of supersaturation. The results show that induction time decreases with increasing supersaturation and temperature. The classical nucleation theory can well predict experimental data. Interfacial tension is estimated at different temperatures and compared with two correlations for calculation of interfacial tension.