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In this study, novel ligand immobilized facial composite adsorbent was prepared for sensitive and selective copper (Cu(II)) ions detection and removal from wastewater samples. Several effects such as initial pH, Cu(II) ions concentration, shaking time, foreign ions and regeneration was determined and systematically discussed. The process also allowed visual Cu(II) ions detection by a colorless to blackish change. The Cu(II) ions were detected and removed at pH 7.0. In the acidic pH region, Cu(II) ions was not detected and removed due to the high concentration of hydrogen ions. As an optical material, the composite adsorbent responded quickly to the addition of Cu(II) ions, and recognized the Cu(II) ions at ultra-trace level. Under optimum conditions, the limit of detection by the composite adsorbent for Cu(II) was 0.15 μg/L. The presence of foreign ions did not interfere with Cu(II) detection, indicating the high …