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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/038/02/0327-0333

    • Keywords

       

      Polymer–matrix nanocomposite; exfoliated graphite; Au(III); adsorption; batch method; ICP-OES.

    • Abstract

       

      In this study, poly(propylene carbonate) (PPC) and exfoliated graphite (PPC–EG) composites were prepared by the solution blending method and their selective extraction and detection of gold(III) were investigated. Specifically, a new effective adsorbent was developed for a selective extraction and determination of gold(III) by use of inductively coupled plasma optical emission spectrometry. The selectivity of PPC (PPC–EG 0.5, PPC–EG 1, PPC–EG 2, PPC–EG 3 and PPC–EG 5) was investigated toward several metal ions, including Au(III), Cd(II), Co(II), Cu(II), Hg(II), Pb(II), Pd(II) and Zn(II). Based on selectivity and pH studies, Au(III) was the most quantitatively adsorbed on PPC–EG 0.5 phase at pH 2, indicating that PPC–EG 0.5 was the most selective toward Au(III) among other metal ions. The adsorption isotherm followed the Langmuir model with adsorption capacity of 157.61 mg g−1 of PPC–EG 0.5 for Au(III), which was in agreement with experimental data of adsorption isotherm study. The kinetic of adsorption for Au(III) was investigated by a pseudo-first- and second-order models. Results of kinetic models displayed that the adsorption of Au(III) on the PPC–EG 0.5 phase obeyed a pseudo-second-order kinetic model. In addition, results of thermodynamic investigation demonstrated that the adsorption mechanism of PPC–EG 0.5 toward Au(III) was a general spontaneous process and favourable.

    • Author Affiliations

       

      Sher Bahadar Khan1 2 Hadi M Marwani1 2 Jongchul Seo3 Esraa M Bakhsh2 Kalsoom Akhtar4 Dowan Kim3 Abdullah M Asiri1 2

      1. Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
      2. Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
      3. Department of Packaging, Yonsei University, Wonju-si, Kangwon-do 720-221, South Korea
      4. Division of Nano Sciences and Department of Chemistry, Ewha Womans University, Seoul 120-750, South Korea
    • Dates

       
  • Bulletin of Materials Science | News

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