▎ 摘　　要

Different surfactant-modified hydroxo aluminum/graphene nanocomposites were synthesized and used for the adsorptive decolorization of Congo red from aqueous solution. Nanocomposites were prepared by the intercalation of hydroxo aluminum/graphene oxide with three different surfactants, followed by reduction using sodium borohydride. Batch experiments were conducted to evaluate the adsorbance from aqueous solution using different adsorbents under different conditions. The results showed that the maximum adsorption capacity can reach 497.51 mg/g, 398.4 mg/g, and 352.1 mg/g on different adsorbents at pH 3 and 323 K. The as-prepared adsorbents all had good reusability, and the optimal eluent buffer is ethanol, NaOH and HCl for different adsorbents. The adsorption kinetics fitted well with a pseudo-second-order model. Adsorption data were found to fit well with the Freundlich model. The thermodynamic analysis indicated that these adsorptions were endothermic and spontaneous in nature.