Fig. 5From: A Facile Method for Preparation of Cu2O-TiO2 NTA Heterojunction with Visible-Photocatalytic ActivityTypical SEM images of the Cu2O-TiO2 NTA heterojunction films. a Sample immersed in 0.2 mol/L Cu(Ac)2. b Sample immersed in 0.3 mol/L Cu(Ac)2. c Sample immersed in Cu(Ac)2 of over high concentrationBack to article page