Nanoparticle-aggregated octahedral copper hierarchical nanostructures

A facile solution route has been developed to synthesize nanoparticle-aggregated octahedral copper hierarchical nanostructures. The formation of these novel octahedral copper hierarchical nanostructures can be attributed to a gas bubbles assisted aggregation mechanism. Based on the shape evolution and corresponding growth mechanism, it is believed that more and more copper crystals with novel hierarchical nanostructures could be obtained.