Title of article
Highly Selective Removal of Pb(II) Ions Using One-Pot Thiol- Functionalized Nanoporous Silica with a Low Amount of Directing Agent
Author/Authors
Atoub, Najme Kish International Campus - University of Tehran, Kish , Amiri, Ahmad School of Chemistry - College of Science - University of Tehran , Badiei, Alireza School of Chemistry - College of Science - University of Tehran , Ghasemi, Jahan B. School of Chemistry - College of Science - University of Tehran
Pages
10
From page
321
To page
330
Abstract
In this study, thiol-functionalized nanostructure silica type MCM-41 was successfully prepared via the facile one-pot hydrothermal method with a low amount of directing agent. The mesoporous silica indicated a
remarkable adsorption behavior toward Pb(II) ions without any interference of the competing ions. The
main experimental parameters affecting removal efficiency of the adsorbent were examined, and the
optimized conditions were achieved to be 6, 50 mg, and 30 min for solution pH, the adsorbent dosage,
and contact time, respectively. The adsorbent was triumphantly used for the removal of Pb(II) ions from
real water samples with a notable removal efficiency of 95%. The concentrations of the competitive ions
in the solution were about 10 to 100 times more than Pb(II) ions. The results show that other ions had no
interfering effect on the removal efficiency of Pb(II) ions. It means that SH-SiO2 has excellent selectivity for Pb(II) ions and is an appropriate candidate for removing Pb(II) ions from the real samples.
Keywords
Adsorbent , Thiol- mesoporous silica , Pb(II) ions
Journal title
Journal of Water and Environmental Nanotechnology (JWENT)
Serial Year
2020
Record number
2525261
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