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Synthesis and characterization of NH2-SiO2@Cu-MOF as a high-performance adsorbent for Pb ion removal from water environment

Author

Listed:
  • Nima Mohammadi

    (Petroleum University of Technology)

  • Behnam Mousazadeh

    (Petroleum University of Technology)

  • Touba Hamoule

    (Petroleum University of Technology)

Abstract

Heavy metal pollution is becoming a global health and environmental concern, so preventing damage to nature is of high significance. In this work, NH2-SiO2 NPs’ immobilization on Cu-MOF was performed to fabricate an effective adsorbent for Pb(II) elimination from aqueous environments. Prepared adsorbent benefits from the combination of functional groups of NH2-SiO2 NPs and porous crystalline structure of Cu-MOF. The results revealed that the adsorption of Pb metal ions onto NH2-SiO2@Cu-MOF follows a Langmuir isotherm and the maximum adsorption capacity was found to be 166.67 mg/g. The kinetic studies showed that the data of Pb adsorption on NH2-SiO2@Cu-MOF are in good agreement with the pseudo-second-order model and the potential mechanism for the adsorption process confirmed as the coordination interaction between N in the amino group (–NH2) and Pb(II). The experimental factors which had the most impact on the adsorption were investigated. The highest performance of the adsorbent appeared at a pH value of 6. The NH2-SiO2@Cu-MOF showed excellent performance in real samples and capability for reuse of up to 5 cycles. Briefly, results indicate that the NH2-SiO2@Cu-MOF is a promising alternative for selective removal of Pb(II) from the aqueous environment.

Suggested Citation

  • Nima Mohammadi & Behnam Mousazadeh & Touba Hamoule, 2021. "Synthesis and characterization of NH2-SiO2@Cu-MOF as a high-performance adsorbent for Pb ion removal from water environment," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(2), pages 1688-1705, February.
    • Handle: RePEc:spr:endesu:v:23:y:2021:i:2:d:10.1007_s10668-020-00646-9
    DOI: 10.1007/s10668-020-00646-9
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    References listed on IDEAS

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    1. Beckner, Matthew & Dailly, Anne, 2016. "A pilot study of activated carbon and metal–organic frameworks for methane storage," Applied Energy, Elsevier, vol. 162(C), pages 506-514.
    2. Kayal, Sibnath & Sun, Baichuan & Chakraborty, Anutosh, 2015. "Study of metal-organic framework MIL-101(Cr) for natural gas (methane) storage and compare with other MOFs (metal-organic frameworks)," Energy, Elsevier, vol. 91(C), pages 772-781.
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    Keywords

    NH2-SiO2; Cu-MOF; Pb(II); Adsorption;
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