Fig. 2From: A Facile One-Pot Synthesis of Biomimetic Photocatalyst Zn(II)-Porphyrin-Sensitized 3D TiO2 Hollow Nanoboxes and Synergistically Enhanced Visible-Light DegradationSEM images of as-prepared catalysts: a TiOF2, b TiO2-HNBs, c T-1p, d T-2p, e T-3p, and f T-5pBack to article page