Synthesis Pb(II)-ion imprinted polymer using tannins from mango leaves (Mangifera indica L.)

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Abstract

This work reports the synthesis of Pb(II)-Ion Imprinted Polymer (Pb-IIP) using tannin extract from Mango leaf (Mangifera Indica L.) as functional ligand (chelating agent and monomer). Pb2+ ion found to form a stable compound at 1:1 complex with tannin in aqueous solution. The resulting complex of Pb2+ and tannin extract was polymerized using phenol-formaldehyde as cross-linker in acidic medium. The structure and properties of Pb-IIP were compared to Pb-IIP gallic acid and Non Imprinted Polymer (NIP) that were synthesized with similar conditions. These polymers were charaterized by Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX). The template of Pb(II) ion was completely removed from the polymeric matrix using 1 mol/L HNO3. The optimum pH of maximum sorption was 5 on IIP-tannin and IIP-gallic acid at 120 mins contact time. Maximum capacity of tannin Pb-IIP, gallic acid Pb-IIP, and NIP were 153.159 mg/g, 147.959 mg/g, and 138.218 mg/g, respectively. It was found that the tannin Pb-IIP sorbent is more selective than gallic acid Pb-IIP and NIP.

Original languageEnglish
Article number012044
JournalIOP Conference Series: Materials Science and Engineering
Volume763
Issue number1
DOIs
Publication statusPublished - 28 Apr 2020
Event3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia
Duration: 8 Aug 20189 Aug 2018

Keywords

  • ion imprinted polymer
  • lead
  • Mangifera Indica L
  • tannin

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