![]() These studies revealed the potential application of MoS 2/rGO for Cr( VI) removal. The electrostatic attraction and reduction on the adsorbents surface was considered to be the possible mechanism of Cr( VI) removal. ![]() The excellent adsorption capacity at 25 ☌, calculated from the Langmuir isotherm model, was 268.82 mg g −1 at pH 2.0 and 192.63 mg g −1 at pH 4.6. Effective Cr( VI) removal occurred in a wide pH range from 2.0 to 10.0. The pseudo-second order model best described the adsorption kinetics. Batch adsorption experiments of Cr( VI) were also investigated. MoS 2/rGO exhibited an enhanced surface area of 81.34 m 2 g −1, more than rGO (57.20 m 2 g −1) and MoS 2 (1.57 m 2 g −1). Results showed that the MoS 2 layers had been successfully grown on the surface of reduced graphene oxide layers. The MoS 2/rGO was characterized by SEM, TEM, XRD, BET and XPS. In this study, novel adsorbents, MoS 2/reduced graphene oxide composites (MoS 2/rGO), were prepared via a facile solvothermal process and effectively used for Cr( VI) adsorption. Cr( VI) as a common heavy metal contaminate has attracted much attention for its high toxicity and bioaccumulation.
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