Fig. 1From: Efficiently Visible-Light Driven Photoelectrocatalytic Oxidation of As(III) at Low Positive Biasing Using Pt/TiO2 Nanotube ElectrodeSEM images of annealed TiO2 nanotubes: a unwashed TiO2 nanotubes, b washed TiO2 nanotubes, c low and d high magnification of cross-sectional view of washed TiO2 nanotubesBack to article page