Chennakesavulu, K and Bhaskar Raju, G and Prabhakar, S and Nair, C M and Murthy, K V G K (2009) Adsorption Of Oleate On Fluorite Surface As Revealed By Atomic Force Microscopy. International Journal of Mineral Processing, 90 (1-4). pp. 101-104.
Restricted to NML users only. Others may use ->
The adsorption of oleic acid/oleate on fluorite surface Could be Visualized using tapping mode of atomic force microscopy (AFM). The natural fluorite crystals were equilibrated with 10(-3) to 10(-7) M oleate solutions and their AFM images at each concentration along with height profiles were recorded. Even at low oleate concentration of 1 x 10(-7) M, concomitant monolayer and bilayer structures were observed. It suggests that normal-normal bonding of hydrocarbon chains takes place before the surface is completely covered by the monolayer. Multi-layer adsorption of oleate was observed at oleate concentrations of above 10(-4) M. The tapping mode AFM can be utilized to visualize the topography of surfaces adsorbed with surfactant Molecules. (C) 2008 Elsevier B.V. All rights reserved
|Uncontrolled Keywords:||Fluorite; Sodium oleate; Atomic force microscopy; Topography; Adsorption|
|Deposited By:||Sahu A K|
|Deposited On:||06 Jul 2011 14:06|
|Last Modified:||28 Jun 2012 12:17|
Repository Staff Only: item control page