The mechanism for promoted oxygenation of V(IV) by goethite: Positive effect of surface hydroxyl groups

• Published in: Journal of hazardous materials Vol. 369; pp. 254 - 260
• Main Authors: Hu, Xingyun, Peng, Xianjia, Kong, Linghao, Zhu, Feng
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 05.05.2019
• Subjects: dissolved oxygen; electron transfer; Goethite; ions; iron; iron oxyhydroxides; moieties; Oxidation; risk; Surface hydroxyl groups; toxicity; Vanadium; Oxidation; Surface hydroxyl groups; Goethite; Vanadium

•The oxidation process of V(IV) was greatly promoted by goethite.•Surface hydroxyl groups on goethite are key medium for the oxidation of V(IV).•The formation of hydroxo complexes changes the interface pH of goethite-water.•The hydroxo complexes mediate the electron transfer reactions between VO2+ a...