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Separation Science and Technology Volume 54, 2019 - Issue 6
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Adsorption

Characterization of molybdenum disulfide nanomaterial and its excellent sorption abilities for two heavy metals in aqueous media

Lijia DongCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Qian LiCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Qing LiaoCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Chunyan SunCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Xue LiCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Qingzhou ZhaoCollege of Resources and Environment, University of Chinese Academy of Sciences, Beijing, P.R. ChinaView further author information
,
Runpu ShenCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Baoshan ZhaoCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaView further author information
,
Abdullah M. AsiriChemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi ArabiaView further author information
,
Hadi M. MarwaniChemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi ArabiaView further author information
,
Xilin WuCollege of Geography and Environmental Science, Zhejiang Normal University, Jinhua, People’s Republic of ChinaView further author information
&
Baowei HuCollege of Life Science, School of Chemistry and Chemical Engineering, College of Yuanpei, Shaoxing University, Zhejiang, P.R. ChinaCorrespondence[email protected]
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Pages 847-859 | Received 06 Feb 2018, Accepted 20 Aug 2018, Published online: 10 Sep 2018
 
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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.

Additional information

Funding

Financial support from the National Natural Science Foundation of China [Grant number 31700476] is greatly acknowledged.

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