A METHOD OF PREPARING PURE PRECIOUS METAL NANOPARTICLES WITH LARGE FRACTION OF (100) FACETS, NANOPARTICLES OBTAINED BY THIS METHOD AND THEIR USE

摘要

The invention provides a method of preparing pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction using a reducing agent contained in the reagent solution to provide nanoparticles, and the reduction reaction is stopped by rapid lowering of the reaction solution temperature. In the process of the invention, the need to use surfactants or other organic particles to stabilize the (100) facets is eliminated.

主权项

1. A method of preparing of pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction by a reducing agent contained in the reagent solution to provide nanoparticles, characterized in that the reduction reaction is conducted in the absence of a surfactant and stopped after a pre-determined time t by rapid lowering of the reaction solution temperature.