Trace copper (II) ions detection and removal from water using novel ligand modified composite adsorbent

 

 

A highly selective mesoporous composite adsorbent is proposed for simultaneous detection and removal of Cu(II) ions in natural waters. The adsorbent was developed using the synthesized ligand 3-(((5-ethoxybenzenethiol)imino)methyl)-salicylic acid (EBMS) immobilization onto mesoporous silica monoliths. The data clarified the nitrogen donor atom in EBMS ligand made the strong and stable complexation mechanism with Cu(II) ions during detection and removal systems. Therefore, Cu(II) bonding with EBMS to enhance color formation and make the ligand as metal-ligand [Cu(II)-EBMS]ⁿ⁺ complexes. The solid material has spherical cavities to showed the rapid response and transport of Cu(II) to network sites easily with high sorption efficiency without loss of cage cavities. The influence of pH, kinetics parameters, limit of detection, Cu(II) sorption capacity,