Facile synthesis of amine-functional reduced graphene oxides as modified quick, easy, cheap, effective, rugged and safe adsorbent for multi-pesticide residues analysis of tea

摘要

Highlights?Amine-functional rGOs with different amino groups were successfully synthesized.?Tri-BuA-rGO exhibited the highest cleanup performance as one new QuEChERS adsorbent.?The adsorption mechanism of catechins and caffeine on tri-BuA-rGO was discussed.?The proposed multi-pesticide residues analysis method for tea was less adsorbent needed, green and time saving.AbstractAmine-functional reduced graphene oxide (amine-rGO) with different carbon chain length amino groups were successfully synthesized. The graphene oxides (GO) reduction as well as amino grafting were achieved simultaneously in one step via a facile solvothermal synthetic strategy. The obtained materials were characterized by X-ray diffraction, Raman spectroscopy, Fourier-transform infrared spectrometry and X-ray photoelectron spectroscopy to confirm the modification of GO with different amino groups. The adsorption performance of cat