Copper is a highly toxic environmental pollutant, therefore, there is an urgent need to develop new materials for its removal from water. In the present study,new TEMPO oxidized cellulose-based materials were synthesized and investigated as an adsorbent for simple and rapid removal of copper ion[Cu(Ⅱ)] via spectrophotometry. Cellulose was extracted from chemical pulp fiber, TEMPO oxidized, and modified by reaction with three different amino acids (Gly, Lys, His). Compared with TEMPO oxidizedcellulose (TOC), the amino acid modified cellulose (AMC) had better effect on the adsorption of copper ion, in which histidine modified cellulose achieved the best adsorption rate with 97% in low copper concentration. In addition,the AMC dosing amount, initial copper concentration, pH on the adsorption effect were also investigated.The data were analyzed on the basis of variouskinetic and isotherm models, and pseudo-second-order kinetics and Langmuir isotherm were followed for Cu2+ adsorption.