Mutual Effects Behind the Simultaneous Removal of Toxic Metals and Cationic Dyes by Interlayer-expanded MoS Nanosheets

Overview

Journal Environ Sci Pollut Res Int

Publisher Springer

Specialties Environmental Health
Toxicology

Date 2019 Sep 1

PMID 31471849

Citations 1

Authors

Zheng Wu

Qingyun Duan

Xuede Li

Jie Li

Affiliations

Soon will be listed here.

Abstract

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 MoS (IE-MoS) 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-MoS 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-MoS 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-MoS nanosheets. In summary, IE-MoS 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.

Citing Articles

Predicting biomolecule adsorption on MoS nanosheets with high structural fidelity.

Pham L, Walsh T Chem Sci. 2022; 13(18):5186-5195.

PMID: 35655578 PMC: 9093178. DOI: 10.1039/d1sc06814h.

References

Xie J, Zhang H, Li S, Wang R, Sun X, Zhou M . Defect-rich MoS2 ultrathin nanosheets with additional active edge sites for enhanced electrocatalytic hydrogen evolution. Adv Mater. 2013; 25(40):5807-13. DOI: 10.1002/adma.201302685. View

Chen B, Chen S, Zhao H, Liu Y, Long F, Pan X . A versatile β-cyclodextrin and polyethyleneimine bi-functionalized magnetic nanoadsorbent for simultaneous capture of methyl orange and Pb(II) from complex wastewater. Chemosphere. 2018; 216:605-616. DOI: 10.1016/j.chemosphere.2018.10.157. View

Matte H, Gomathi A, Manna A, Late D, Datta R, Pati S . MoS2 and WS2 analogues of graphene. Angew Chem Int Ed Engl. 2010; 49(24):4059-62. DOI: 10.1002/anie.201000009. View

Zhao F, Repo E, Yin D, Meng Y, Jafari S, Sillanpaa M . EDTA-Cross-Linked β-Cyclodextrin: An Environmentally Friendly Bifunctional Adsorbent for Simultaneous Adsorption of Metals and Cationic Dyes. Environ Sci Technol. 2015; 49(17):10570-80. DOI: 10.1021/acs.est.5b02227. View

Gu P, Zhang S, Zhang C, Wang X, Khan A, Wen T . Two-dimensional MAX-derived titanate nanostructures for efficient removal of Pb(ii). Dalton Trans. 2019; 48(6):2100-2107. DOI: 10.1039/c8dt04301a. View

Bellas J, Vazquez E, Beiras R . Toxicity of Hg, Cu, Cd, and Cr on early developmental stages of Ciona intestinalis (Chordata, Ascidiacea) with potential application in marine water quality assessment. Water Res. 2001; 35(12):2905-12. DOI: 10.1016/s0043-1354(01)00004-5. View

Ma L, Wang Q, Islam S, Liu Y, Ma S, Kanatzidis M . Highly Selective and Efficient Removal of Heavy Metals by Layered Double Hydroxide Intercalated with the MoS4(2-) Ion. J Am Chem Soc. 2016; 138(8):2858-66. DOI: 10.1021/jacs.6b00110. View

Chhowalla M, Shin H, Eda G, Li L, Loh K, Zhang H . The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets. Nat Chem. 2013; 5(4):263-75. DOI: 10.1038/nchem.1589. View

Wang Z, Mi B . Environmental Applications of 2D Molybdenum Disulfide (MoS) Nanosheets. Environ Sci Technol. 2017; 51(15):8229-8244. DOI: 10.1021/acs.est.7b01466. View

10.

Jiang H, Ren D, Wang H, Hu Y, Guo S, Yuan H . 2D Monolayer MoS₂-Carbon Interoverlapped Superstructure: Engineering Ideal Atomic Interface for Lithium Ion Storage. Adv Mater. 2015; 27(24):3687-95. DOI: 10.1002/adma.201501059. View

11.

Liu X, Ma R, Wang X, Ma Y, Yang Y, Zhuang L . Graphene oxide-based materials for efficient removal of heavy metal ions from aqueous solution: A review. Environ Pollut. 2019; 252(Pt A):62-73. DOI: 10.1016/j.envpol.2019.05.050. View

12.

Zhao H, Mu X, Zheng C, Liu S, Zhu Y, Gao X . Structural defects in 2D MoS nanosheets and their roles in the adsorption of airborne elemental mercury. J Hazard Mater. 2018; 366:240-249. DOI: 10.1016/j.jhazmat.2018.11.107. View

13.

Wang Z, Sim A, Urban J, Mi B . Removal and Recovery of Heavy Metal Ions by Two-dimensional MoS Nanosheets: Performance and Mechanisms. Environ Sci Technol. 2018; 52(17):9741-9748. DOI: 10.1021/acs.est.8b01705. View

14.

Pei H, Wang J, Yang Q, Yang W, Hu N, Suo Y . Interfacial growth of nitrogen-doped carbon with multi-functional groups on the MoS skeleton for efficient Pb(II) removal. Sci Total Environ. 2018; 631-632:912-920. DOI: 10.1016/j.scitotenv.2018.02.324. View