Fig. 5From: A Facile One-Pot Synthesis of Biomimetic Photocatalyst Zn(II)-Porphyrin-Sensitized 3D TiO2 Hollow Nanoboxes and Synergistically Enhanced Visible-Light Degradationa UV-Vis spectra of ZnTCP in 5×10−4 mol/L DMF solution. b UV-vis diffuse reflectance spectra (DRS) of all the samples. (c) Estimated optical absorption edges for the T-2p and TiO2-HNBsBack to article page