Synthesis of copper oxide nanowires and nanoporous copper via environmentally friendly transformation of bulk copper–calcium alloys†
Abstract
In this work, we report a novel, one-step, inexpensive and environmentally friendly synthesis of Cu nanostructures by means of chemical de-alloying of bulk Cu–Ca alloys in aqueous solutions. By controlling the synthesis conditions, we tune the morphology of the nanostructured Cu from nanoporous Cu to copper oxide nanowires.