Abstract
A novel hybrid material was prepared by grafting β-cyclodextrin (β-CD) onto the surface of oxidized AC for the rapid adsorption of naphthalene. AC and CDACs were characterized using the N2 adsorption–desorption method, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and solid state CP MAS 13C NMR. All the results demonstrate that β-CD grafted successfully onto AC. Batch experimental adsorption datas had a higher correlation to Freundlich isotherm model and the pseudo-second-order model. The adsorption equilibrium capacity of 178.73mg·g−1 was reached in just 10s at an AC/β-CD grafting ratio value of 1:1. It had a faster adsorption rate than many reported adsorbents. Additionally, the positive free energy change (∆G°), and the positive enthalpy change (∆H°) suggest that it is a viable, spontaneous and endothermic process, which will provided a new path to a highly-efficient and fast-adsorption-rate adsorbent for naphthalene or its analogues discharged into the environment.
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