Multistep synthesis of CuO nanorod bundles and interconnected nanosheets using Cu2(OH)3Cl plates as precursor

CuO nanorod bundles and interconnected nanosheets are prepared via a three-step synthesis method starting from the Cu2(OH)3Cl precursor. Cu(OH)2 nanorod bundles are obtained by the reaction of the Cu2(OH)3Cl precursor with NaOH in aqueous solution at room temperature. CuO interconnected nanosheets are obtained by hydrothermal treatment of Cu(OH)2 nanorod bundles, and CuO nanorod bundles consisting of nanoparticles with certain orientation are obtained by the solid-state thermal transformation of Cu(OH)2 nanorod bundles. The influences of the temperature and NaOH concentration on the synthesis of CuO nanostructures are investigated.