Open AccessSynthesis and characterization of Cu2+ imprinted polymer-tannin extract from mango leaf (Mangifera indica L.) for selective separation of Cu2+
Author(s) -
Firsty Aprielta Aribah,
D. A. Nurani,
D. U. C. Rahayu,
Yuni Krisyuningsih Krisnandi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/763/1/012033
Subject(s) - mangifera , tannin , nuclear chemistry , chemistry , adsorption , metal ions in aqueous solution , polymerization , fourier transform infrared spectroscopy , selectivity , polymer , metal , organic chemistry , chemical engineering , botany , catalysis , food science , biology , engineering
Tannins are secondary metabolites in Mango (Mangifera indica L.). This compound has a cluster of polyphenols as functional ligands for chelating Cu(II). Cu(II)-imprinted polymer-tannin (Cu-IP-tannin) was successfully synthesized by polymerization of phenol and formaldehyde with the complex of Cu(II)-tannins in acidic medium. Non-imprinted polymer (NIP) was similarly prepared without the presence of Cu(II) ions. The polymers were characterized by Scanning electron microscopy energy dispersive x-ray spectroscopy (SEM-EDS) and Fourier transform infra-red (FTIR). Cu(II) ions were completely removed by leaching the dried and powder of imprinted polymer with HNO 3 0.5 M. The optimum pH of maximum adsorption of Cu(II)-IP-tannin was 7.0 for 120 minutes of contact time. The adsorption of Cu(II)-IP-tannin followed the Freundlich isotherm model with a maximum adsorption capacity of 99.08 mg/g. The relative values of the selectivity factor (α r ) of Cu(II)/Ni(II), Cu(II)/Pb(II) and Cu(II)/Fe(II) on a single metal ion selectivity test were 23.89, 55.71 and 26.25, respectively.