ABSTRACT the different experimental conditions,and confirm the optimal condition and the maximum adsorption of composites for copper ion and methylene blue.According to the analysis of the adsorption equilibrium state by adsorption isotherm model,kinetic model and thermodynamic model,we discuss the adsorption property in this procedure. The final researched results in this work could be described in follow: (1)The equilibrium adsorption capacity of CNTs-PDA-PEI for Cu2+aqueous could arrive to 34.6 mg/g,and the adsorption capacity would increase to 47.4 mg/g accompanying with the pH value enhanced.When the solution pH exceed 10, adsorption capacity is not significant change.Therefore,the adsorption experiment in this work better conforms to the Langmuir model and the pseudo-first-order kinetic model. (2)The equilibrium adsorption capacity of CNTs-PDA-PSPSH composite for cationic dye (methylene blue)is 174 mg/g,and the adsorption model of CNTs-PDA-PSPSH for MB solution better conforms for the Langmuir monolayer adsorption model and the pseudo-first-order kinetic model. (3)The maximal adsorption capacity of GO-PDA-PSPSH for MB solution can reach 183 mg/g,and adsorption model of GO-PDA-PSPSH also conforms the Langmuir model and the pseudo-first-order kinetic model. Key words:heavy metal ions:organic dyes;adsorption;mussel inspired chemistry: modified materials IV 万方数据ABSTRACT IV the different experimental conditions, and confirm the optimal condition and the maximum adsorption of composites for copper ion and methylene blue. According to the analysis of the adsorption equilibrium state by adsorption isotherm model,kinetic model and thermodynamic model, we discuss the adsorption property in this procedure. The final researched results in this work could be described in follow: (1) The equilibrium adsorption capacity of CNTs-PDA-PEI for Cu2+ aqueous could arrive to 34.6 mg/g, and the adsorption capacity would increase to 47.4 mg/g accompanying with the pH value enhanced. When the solution pH exceed 10, adsorption capacity is not significant change. Therefore, the adsorption experiment in this work better conforms to the Langmuir model and the pseudo-first-order kinetic model. (2) The equilibrium adsorption capacity of CNTs-PDA-PSPSH composite for cationic dye (methylene blue) is 174 mg/g, and the adsorption model of CNTs-PDA-PSPSH for MB solution better conforms for the Langmuir monolayer adsorption model and the pseudo-first-order kinetic model. (3) The maximal adsorption capacity of GO-PDA-PSPSH for MB solution can reach 183 mg/g, and adsorption model of GO-PDA-PSPSH also conforms the Langmuir model and the pseudo-first-order kinetic model. Key words：heavy metal ions；organic dyes；adsorption；mussel inspired chemistry； modified materials 万方数据