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|Title:||Xanthate capping of silver, copper, and gold colloids|
|Citation:||Tzhayik, O., Sawant, P., Efrima, S., Kovalev, E., Klug, J.T. (2002-04-16). Xanthate capping of silver, copper, and gold colloids. Langmuir 18 (8) : 3364-3369. ScholarBank@NUS Repository. https://doi.org/10.1021/la015653n|
|Abstract:||We cap silver, copper, and gold nanocolloids with long-chain alkylxanthates. In comparison to thiol capping, the particles are less hydrophobic and are stable in aqueous solutions for over a month, though being less stable than the corresponding oleate-capped particles. They can be transferred into relatively polar organic media (such as dichloromethane) but not into nonpolar solvents (such as dodecane). Unlike noncapped, thiol-capped, and oleate-capped colloids, they are temperature sensitive, as a result of the thermal decomposition of the xanthate molecule itself, and can be applied as thermally decomposable colloids. They demonstrate exceptional resistivity toward cyanide-induced corrosion by oxygen, when compared to noncapped or even to oleate-capped colloids. Xanthate capping enables the production of stable copper nanocolloids in aqueous solution under ambient conditions.|
|Appears in Collections:||Staff Publications|
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