WACŁAWEK Stanisław Technical University of Liberec

Gum Karaya Stabilized Ag Nanoparticles Solution and Electrospun Membrane for Detection and the Removal of Hg2+ from Water

Co-authors VELLORA THEKKAE PADIL Vinod, ČERNÍK Miroslav

Ag Nanoparticles (Ag NP) were synthesised by Gum Karaya (Sterculia Urens), a tree gum, which performed as both reducing and capping agent. The morphology, characterization and reducing ability of Gum Karaya stabilized Silver nanparticles (GK/Ag NPs) were assessed using scanning electron microscopy, UV-Vis spectroscopy, ATR-FTIR techniques and ICPMS analytical methods. Stability of synthesized Ag NPs in various pH conditions (2 to 10) and selectivity for Hg2+ detection over other anions (Cl- , SO42- and CO32-) were also evaluated. GK/Ag NPs were directly used for the colourimetric detection of Hg2+ ions in the range from 1 to 23 ppm at the absorbance of 380 nm. The detection limit for Hg2+ ions in water solution was determined to be 1ppm. The removal of Hg2+ ions from water were also estimated using electrospun GK /Ag –Membrane.

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