Hierarchical growth of ZnO nanorods over SnO2 seed layer: insights into electronic properties from photocatalytic activity - Silva, Luís F.; Lopes, Osmando F.; Catto, Ariadne C.; Avansi Junior, Waldir; Bernardi, Maria Inês Basso; Siu Li, Máximo; Ribeiro, Caue; Longo, Elson (RSC Advances, 2016)