Environmental Science and Pollution Research

, Volume 26, Issue 30, pp 31344–31353 | Cite as

Mutual effects behind the simultaneous removal of toxic metals and cationic dyes by interlayer-expanded MoS2 nanosheets

  • Zheng Wu
  • Qingyun Duan
  • Xuede LiEmail author
  • Jie LiEmail author
Research Article


Simultaneous removal of coexisting metals and dyes from industrial wastewaters is challenging, and the mutual effects behind the co-adsorption of these pollutants remain unclear. Herein, interlayer-expanded MoS2 (IE-MoS2) nanosheets prepared by a one-pot simple and scalable method were tested to simultaneously remove toxic metals and cationic dyes. The adsorption capacities of IE-MoS2 nanosheets were 499, 423, 500, 355, and 276 mg/g for Pb(II), Cu(II), methylene blue, malachite green, and rhodamine B, respectively, in a mono-contaminant system. Interestingly, the sequestration amount of Pb(II) was dependent on the concentrations of dyes in the binary Pb(II)−dye systems, while uptake of cationic dyes was almost not influenced by coexisting Pb(II). The simultaneous adsorption mechanism was further confirmed by spectroscopic methods. The IE-MoS2 nanosheets were easily regenerated and reused for six adsorption−desorption cycles without structure destruction, thus avoiding the potential hazards of nanomaterial to the ecosphere. More interestingly, high-efficiency uptake of Pb(II) from intentionally contaminated natural water and model textile effluent was obtained by using a column filled with IE-MoS2 nanosheets. In summary, IE-MoS2 nanosheets with facile and scalable synthesis method, efficient adsorption performance, and excellent reusability showed potential promise for the integrative treatment of complex wastewater bearing both metals and organic pollutants.


Interlayer-expanded MoS2 nanosheets Simultaneous removal Toxic metals Cationic dyes Complex wastewater 


Funding information

This work was supported by the National Natural Science Foundation of China (21806001 and 31800713). And the CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences is acknowledged.

Supplementary material

11356_2019_6277_MOESM1_ESM.docx (56 kb)
ESM 1 (DOCX 55 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Resources and EnvironmentAnhui Agricultural UniversityHefeiPeople’s Republic of China
  2. 2.Hefei Scientific Observing and Experimental Station of Agro-Environment, Ministry of AgricultureHefeiPeople’s Republic of China

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