오성근
2016-05-10T01:04:06Z
2016-05-10T01:04:06Z
2015-01
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v. 21, Page. 768-771
1226-086X
http://hdl.handle.net/20.500.11754/21108
http://www.sciencedirect.com/science/article/pii/S1226086X14002081
Highly concentrated silver colloidal solutions were synthesized via alcohol reduction process by adding ammonium hydroxide (NH4OH). NH4OH played a role of enhancing the conversion of silver ions to silver atoms by accelerating oxidation reaction of alcohol. Amount of converted Ag0 affected particle size, size distribution, and particle concentration, and it was explained in the aspect of nucleation and growth steps. Also, in the middle of the reaction process, Ostwald ripening was observed in TEM image which has hardly been reported in metallic particles. Colloidal characteristics were analyzed by UV–vis spectrophotometer and TEM, and the degree of Ag+ reduction was determined by ISE.
This work was supported by the Energy Efficiency & Resources Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20122010100040).
ELSEVIER SCIENCE INC
Silver nanoparticles
Ostwald ripening
Alcohol reduction process
NH4OH effect
Ostwald ripening and control of Ag ion reduction degree by ammonium hydroxide in alcohol reduction process
Article
21
10.1016/j.jiec.2014.04.010
768-771
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Lee, Yunji
Oh, Seong-Geun
2015009292
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF CHEMICAL ENGINEERING
seongoh