The adsorption of chlorophenols (CPs) on pristine graphene was investigated. The adsorption capacities of graphene were 88.1 mg g–1 for 2-chlorophenol (2-CP), 114.2 mg g–1 for 4-chlorophenol (4-CP), 155.3 mg g–1 for 2,4-dichlorophenol (DCP), and 175.8 mg g–1 for 2,4,6-trichlorophenol (TCP), respectively. The equilibrium was attained during 20 min. There was no significant effect on the adsorption amounts in the pH range of pH 1.01–8.09 for 2-CP, 1.08–8.01 for 4-CP, 1.04–7.03 for DCP, and 2.86–5.63 for TCP. The Langmuir and pseudo-second-order models supplied good fitting of the experimental data. Thermodynamic constants demonstrated that the process was endothermic and spontaneous.

CCDC no.: 1550134The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

C6H8NO7Y, monoclinic, P21/n (no. 14), a = 6.7457(7) Å, b = 6.5637(6) Å, c = 19.8466(19) Å, β = 93.352(2)°, V = 877.24(15) Å3, Z = 4, Rgt(F) = 0.0245, wRref(F2) = 0.0604, T = 296(2) K.

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