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Journal of Sol-Gel Science and Technology

, Volume 86, Issue 1, pp 217–225 | Cite as

Synthesis and application of a novel magnetic SBA-15 nanosorbent for heavy metal removal from aqueous solutions

  • Zohreh Dahaghin
  • Hassan Zavvar Mousavi
  • Maryam Sajjadi
Original Paper: Sol-gel and hybrid materials with surface modification for applications
  • 135 Downloads

Abstract

In this work for the first time, magnetic nanoporous SBA-15 functionalized with isatin groups as a magnetic nanosorbent was applied for the simultaneous extraction of trace amounts of cadmium(II), nickel(II), lead(II), and zinc(II). The characterization of this nanosorbent was studied using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The effect of several factors such as pH, amount of sorbent, extraction time, type and volume of the eluent, sample volume, sorption capacity, and potentially interfering ions were investigated. In the selected conditions, it was observed that the limits of detection were 0.10 ng mL−1 for Cd(II), 0.25 ng mL−1 for Ni(II), 0.4 ng mL−1 for Pb(II), and 0.2 ng mL−1 for Zn(II), and the maximum sorption capacity of this suggested magnetic nanosorbent was 140, 122, 110, and 115 mg g−1 for Cd(II), Ni(II), Pb(II), and Zn(II), respectively. Finally, the suggested procedure was applied for determination of cadmium(II), nickel(II), lead(II), and zinc(II) at trace levels in different water and agricultural products with satisfactory results.

Synthesized SBA-15@Fe3O4@Isa nanoparticles

Keywords

SBA-15 Isatin Trace metal detection Polluting metal extraction 

Notes

Acknowledgements

Due to the support of this work, the authors thank the Semnan University Research Council.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10971_2018_4581_MOESM1_ESM.docx (200 kb)
Supplementary information

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Zohreh Dahaghin
    • 1
  • Hassan Zavvar Mousavi
    • 1
  • Maryam Sajjadi
    • 1
  1. 1.Department of ChemistrySemnan UniversitySemnanIran

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