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Ultra-Fast Synthesis of Thiol-Functionalized Organosilica (OS-SH) for Adsorption of Hg(II) from Aqueous Solution

  • PHYSICAL CHEMISTRY OF SURFACE PHENOMENA
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Abstract

Thiol-functionalized organosilica (OS-SH) was synthesized via an ultra-fast sol–gel procedure without using any templates. The OS-SH was then employed as an adsorbent to remove Hg(II) ions from aqueous solution. Pore structure and material morphology were characterized by FTIR, TGA, SEM, TEM, and N2 sorption measurements. The OS-SH adsorbents demonstrated an outstanding adsorption performance (72.48 mg g–1 at pH 3). The adsorption isotherm can be best described by the Langmuir model, suggesting a monolayer adsorption behavior by chemical mechanism. The adsorption kinetics of Hg(II) on OS‑SH was well fitted by the pseudo-second-order model. The synthesis approach proposed in this study provides a much simple, tender as well as highly efficient way to design functional porous adsorbents for the removal of heavy metal ions.

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ACKNOWLEDGMENTS

This work was supported by Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology (BM2012110) and Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University.

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, 213164, Changzhou, China

    Rong Xu, Hao Tan, Meng Guo, Shixiang Zuo & Xueni Sun

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  1. Rong Xu
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  2. Hao Tan
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  3. Meng Guo
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  4. Shixiang Zuo
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  5. Xueni Sun
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Correspondence to Rong Xu or Xueni Sun.

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Xu, R., Tan, H., Guo, M. et al. Ultra-Fast Synthesis of Thiol-Functionalized Organosilica (OS-SH) for Adsorption of Hg(II) from Aqueous Solution. Russ. J. Phys. Chem. 96, 1561–1566 (2022). https://doi.org/10.1134/S0036024422070263

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  • DOI: https://doi.org/10.1134/S0036024422070263

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