Please use this identifier to cite or link to this item:
http://paper.sci.ui.ac.id/jspui/handle/2808.28/248
Title: | Theoretical Analysis Of Interaction Energy In Alginate-Capped Gold Nanoparticles Colloidal System |
Authors: | Foliatini Yulizar, Yoki Hafizah, d Mas Ayu Elita |
Keywords: | Au/alginate nanocomposite van der Waals energy steric repulsion energy electrostatic energy |
Issue Date: | Nov-2014 |
Publisher: | Department of Chemistry, Gadjah Mada University |
Series/Report no.: | Volume 14;No. 3 |
Abstract: | Stability of Au/alginate nanocomposite was theoretically evaluated by computing various interactions energy which contributes in the system, including attraction and repulsion interaction. The results revealed that both polymer and electrostatic charges play a significant role in the stabilization, but the steric repulsion comes from polymer chain is a more effective stabilization mechanism than the electrostatic repulsion. Higher pH yielded in stronger electrostatic repulsion but when the alginate thickness is low the resulting nanocomposite was less stable in a long time period. Interaction energies for Au/alginate nanocomposite colloidal system was up to ~60 kT for alginate thickness of 1 nm, at very short particle-particle separation distance (< 1 nm). As the alginate thickness can be controlled by adjusting the alginate concentration, it can be concluded that the high stability of Au/alginate nanocomposite can be achieved by employing an appropriate amount of alginate concentration. |
URI: | http://paper.sci.ui.ac.id/jspui/handle/2808.28/248 |
ISSN: | 1411-9420 |
Appears in Collections: | Journal Collection |
Files in This Item:
File | Description | Size | Format | |
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YokiYulizar.Indo.J.Chem.2014.pdf | 747,3 kB | Adobe PDF | View/Open Request a copy |
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