%0 Journal Article %T Hierarchically porous Co3O4 hollow spheres with tunable pore structure and enhanced catalytic activity %A Wang, Chang-An %A Li, Sa %A An, Linan %J Chemical Communications %V 49 %N 67 %P 7427-7429 %@ 1359-7345 %D 2013-07-26 %I The Royal Society of Chemistry %~ DeepDyve