Journal of Materials Science, Vol.54, No.3, 2093-2101, 2019
Synthesis of two novel H(4)TCPBDA-based metal-organic frameworks and their application in lead ion adsorption
Two novel porous metal-organic frameworks (MOFs) Cu(TCPBDA) and Cd(TCPBDA) based on a new ligand, namely N,N,N,N-tetrakis(4-carboxyphenyl)biphenyl-4,4-diamine (H(4)TCPBDA), were synthesized by solvent thermal method and characterized with scanning electron microscopy, powder X-ray diffraction, BET analysis and spectrofluorometry. The static adsorption of the two MOFs for lead ions (Pb2+) was investigated. Cu(TCPBDA) showed a higher adsorption capacity for Pb2+ compared with Cd(TCPBDA), and its maximum adsorption capacity was 300mg/g. The adsorption performance of Cu(TCPBDA) was then further studied. It was found that the adsorption of Cu(TCPBDA) for Pb2+ fitted the Freundlich model and pseudo-second-order equation very well. The adsorption ability of Cu(TCPBDA) was applied to fast and efficient adsorption for Pb2+ in toner. The results indicates that Cu(TCPBDA) is a promising material in adsorption and removal of heavy metal ions.