Fig. 1From: Density functional theory modeling of chromate adsorption onto ferrihydrite nanoparticles1.6 nm particle, Fe38O112H110 based on the structure of Michel et al. [21] as refined by Pinney et al. [23] and surface construction of Hiemstra [24] inside 20 × 20 × 20 Å3 3-D periodic cell. H = white, O = red, Fe = blue-grayBack to article page