Application of organic-inorganic hybrid composite particle for removal of heavy metal ions from aqueous solution and its toxicity evaluation

Soon-Jae Lee, Nahae Kim, Seulki Cho, Jae Chun Ryu, Yoon Cho, Jeong Ann Park, Sang-Hyup Lee, Juyoung Kim, Jae Woo Choi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this study, we present new organic–inorganic (O-I) hybrid composite particles and their possible application as an adsorbent for removal of various inorganic heavy metal from aqueous phase. The O-I hybrid nanoparticles were first prepared by copolymerization of (3-aminopropyl) triethoxysilane (APTES) and alkoxysilane-functionalized amphiphilic polymer (APAS) precursors which have hydrophobic polypropylene oxide segment and hydrophilic polyethylene oxide segment at the same backbones where triethoxysilane groups are chemically bonded with hydrophobic segment. The O-I hybrid composite particles consisting of silica nanoparticles chemically interconnected by O-I hybrid nanoparticles were prepared using the 2nd hydrolysis-condensation reaction. The characteristics of the hybrid particle thus developed were confirmed by FT-IR (Fourier transform infrared) spectroscopy, 29Si-NMR (nuclear magnetic resonance) spectroscopy, EA (Elemental analysis), TGA (thermogravimetric analysis), SEM (scanning electron microscopy), and cryo-TEM (cryogenic transmission electron microscopy). The O-I hybrid particles exhibited removal of cations (Ni, Cu, Zn, Cd and Pb) from aqueous solution with a considerably higher sorption capacity for Pb than for other cations. The heavy metal removal occurred instantaneously with pH increase. A step wise application tests were conducted to distinguish between heavy metal precipitation at a high pH and adsorption by the developed material. Cytotoxicity tests demonstrated that the developed adsorbent has a weak cytotoxic effect on four different types of human cells.

Original languageEnglish
Pages (from-to)335-347
Number of pages13
JournalEuropean Polymer Journal
Volume95
DOIs
Publication statusPublished - 2017 Oct 1

Keywords

  • Adsorption
  • Composite particle
  • Heavy metal ion
  • Organic-inorganic hybrid
  • Toxicity evaluation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Polymers and Plastics
  • Organic Chemistry

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