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      https://www.ias.ac.in/article/fulltext/boms/039/04/1011-1019

    • Keywords

       

      Au(III); ionic liquid; silica gel; adsorption; kinetic model; batch mode.

    • Abstract

       

      In this study, an efficiently employed ionic liquid combined with commercially available silica gel (SG–ClPrNTf$_2$) was developed for selective detection of gold(III) by use of inductively coupled plasma–optical emission spectrometry (ICP-OES). The selectivity of SG–ClPrNTf$_2$ was evaluated towards seven metal ions, including Y(III), Mn(II), Zr(IV), Pb(II), Mg(II), Pd(II) and Au(III). Based on pH study and distribution coefficient values, the SG–ClPrNTf$_2$ phase was found to be the most selective towards Au(III) at pH 2 as compared to other metal ions. The adsorption isotherm of Au(III) on the SG–ClPrNTf$_2$ phase followed the Langmuir model with adsorption capacity of 59.48 mg g$^{−1}$, which was highly in agreement with experimental data of adsorption isotherm study. The kinetics study indicated that Au(III) adsorption kinetics data were well fit with the pseudo-second-order kinetic model on the basis of correlation coefficient fitting (0.996) and adsorption capacity agreement (62.26 mg g$^{−1}$). Furthermore, SG–ClPrNTf$_2$ phase was effectively performed for the determination of Au(III) in real water samples with satisfactory results.

    • Author Affiliations

       

      HADI M MARWANI1 2 AMJAD E ALSAFRANI1 HAMAD A AL-TURAIF3 ABDULLAH M ASIRI1 2 SHER BAHADAR KHAN1 2

      1. Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
      2. Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
      3. Chemical and Materials Engineering Department, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
    • Dates

       
  • Bulletin of Materials Science | News

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