title: AFM study on the adsorption of Hg2+on natural molybdenum disulfide in aqueous solutions.
abstract: The adsorption of Hg2+on natural molybdenum disulfide has been studied using atomic force microscope (AFM). The AFM imaging clearly illustrated the adsorption of Hg2+on the surface of molybdenum disulfide, and also hydration layers on the surfaces. It was found that the presence of a hydration layer on molybdenum disulfide surfaces hindered the Hg2+adsorption. Also, it was observed that the Hg2+adsorbed appeared in the form of multilayers. The first adsorbed Hg2+layer might be mainly attributed to the complexation of Hg2+with S atoms exposed on molybdenum disulfide surfaces, while the second one might be due to the electrostatic interaction between negatively charged molybdenum disulfide and the cation Hg2+.
authors.affiliation: Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China. ssx851215@whut.edu.cn and School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China.
authors.forename: Feifei
authors.initials: F
authors.lastname: Jia
authors.affiliation: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China.
authors.forename: Xian
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China. ssx851215@whut.edu.cn and School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China and Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, P. R. China.
authors.forename: Shaoxian
authors.identifier: http://orcid.org/0000-0002-5318-6705
authors.initials: S
authors.lastname: Song