Title :
Polymer coated nanogold for tracing mobility of engineered nanoparticles in subsurface water
Author :
Uthuppu, B. ; Fjordboge, A.S. ; Fischer, S.V. ; Broholm, M.M. ; Jakobsen, Mogens H.
Author_Institution :
Dept. of Micro- & Nanotechnol., Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
Gold nanoparticles coated with amphiphilic block co-polymer PVP-VA are found to be extremely mobile in sand columns in laboratory based experiments. The ultra-stability obtained by such surface modification is also shown by diluting down to a concentration of 62.5 ppb in groundwater having other ions. Such a low level detection of particles is achieved by non-destructive simple UV-Vis spectroscopic technique equipped with liquid wave guide capillary cell (LWCC) units. These results propose the possibility of using surface engineered gold nanoparticles as model system for tracing the mobility of other engineered nanoparticles in the subsurface.
Keywords :
gold; nanoparticles; polymer blends; surface treatment; ultraviolet spectra; visible spectra; Au; amphiphilic block copolymer PVP-VA; groundwater; liquid wave guide capillary cell units; low level particle detection; nondestructive UV-Vis spectroscopic technique; polymer coated nanogold; sand columns; subsurface water; surface engineered gold nanoparticles; surface modification; ultrastability; Gold; Ions; Nanoparticles; Optical surface waves; Polymers; Surface treatment;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948582
