Search

Aminated multi walled carbon nanotubes (CNTs-NH2) were synthesized by micro wave method, characterized by SEM, FTTR, XRD, XI〉S and BET, and applied as sorbents for the sorption removal of five neonicotinoid insecticides (NNIs, including imidacloprid, acetamiprid, clothianidin, thiamethoxam and nitenpyram) in aqueous solution. The experimental results showed that when 10.0 mg CNTs-NH4 was added to a 100 mL solution with 0.5 mg/L NNIs, the removal rates of the five NNTs could all exceed 70%. The pH of the solution and the anions coexisting in water (Cl-, SO4, HCO) have little effect on the sorption effect of NNTs. The sorption kinetic process of CNTs-NH2 for NNTs conformed to the quasi-second-ord er kinetic model, and the sorption equilibrium could be reached within 1 20 minutes. Compared with the Frendlich model, the sorption isotherm of NNTs on CNTs-NHv was more consistent with the Langmuir model. [ABSTRACT FROM AUTHOR]