Characterization of molybdenum disulfide nanomaterial and its excellent sorption abilities for two heavy metals in aqueous media. Issue 6 (13th April 2019)

• Record Type: Journal Article
• Authors: Dong, Lijia; Li, Qian; Liao, Qing; Sun, Chunyan; Li, Xue; Zhao, Qingzhou; Shen, Runpu; Zhao, Baoshan; Asiri, Abdullah M.; Marwani, Hadi M.; Wu, Xilin; Hu, Baowei
• Is Part Of: Separation science and technology. Volume 54:Issue 6(2019)
• Page Start: 847
• Page End: 859
• Publication Date: 2019-04-13
• Subjects: MoS2 -- heavy metals -- sorption -- kinetics -- thermodynamics; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2018.1515226
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: Here, molybdenum sulfide (MoS2 ) was characterized and its performance as an adsorbent for Co(II)/Ni(II) removal from water was estimated in batch experiments. The nanomaterial exhibits thin-layered structure and contains numerous hydroxyl groups. High pH enhanced Co(II)/Ni(II) sorption, while ionic strength had no effect. The chemical sorption between the binding sites of MoS2 and Co(II)/Ni(II) limited the rate. The Freundlich isotherm correlated better than Langmuir isotherm. The maximum sorption capacity for Co(II)/Ni(II) was 370.10/375.94 mg· g −1, obviously exceeding other adsorbents. Both adsorptions were endothermic and spontaneous processes. This study indicates the intrinsic value of MoS2 in removing heavy metals from water.