Ion exchange is a powerful tool for the production of new nanoparticle structures, including complex multicomponent1 and metastable2 structures. Copper chalcogenides are common precursors for cation exchange due to the ready exchange of copper ions. The copper chalcogenides, however, are a complex system representing a large variety of phases and compositions and which can be chemically altered to even greater complexity. It has already been established that variations in copper vacancy concentration can alter amenability of particles toward cation exchange.3 Here we present studies on the effect that variation in the cation exchange technique and phase of precursors has on the resultant exchanged product. Extent of exchange and yield are examined using monoclinic chalcocite and roxbyite phase starting materials.

Tuning cation exchange of copper chalcogenide nanoparticles

255th National Meeting (2018)

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