The migration and bioavailability of Cr(vi) are determined by its adsorption behavior, which is sensitive to the coordination environment and to the physicochemical properties of mineral surfaces, especially natural surface defects, such as surface hydroxyls (OHs) and oxygen vacancies (OVs). However, natural minerals with high percentages of surface OHs and OVs are not available, concealing the quantitative relationship between surface OHs and OVs and Cr(vi) adsorption on minerals. With regard to the easy tuning of OHs and OVs on the 001 surfac...
