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Synthesis of “(aminomethyl)phosphonic acid-functionalized graphene oxide”, and comparison of its adsorption properties for thorium(IV) ion, with plain graphene oxide

  • Amir Doram , Mohammad Outokesh , Seyed Javad Ahmadi and Fazel Zahakifar EMAIL logo
Published/Copyright: November 29, 2021
Radiochimica Acta
From the journal Radiochimica Acta Volume 110 Issue 1

Abstract

The current study presents a simple and scalable method for the synthesis of (aminomethyl)phosphonic acid-functionalized graphene oxide (AMPA-GO) adsorbent. The chemical structure of the new material was disclosed by different instrumental analyses (e.g. FTIR, Raman, XPS, AFM, TEM, XRD, CHN, and UV), and two pertinent mechanisms namely nucleophilic substitution and condensation were suggested for its formation. Adsorption experiments revealed that both AMPA-GO and plain GO have a high affinity toward Th(IV) ions, but the AMPA-GO is superior in terms of adsorption capacity, rate of adsorption, selectivity, pH effect, etc. Indeed, the AMPA-GO can uptake Th(IV) nearly instantaneously, and coexisting Na+ ions have no effect on its adsorption. Thanks to Langmuir isotherm, the maximum adsorption capacities of the GO and AMPA-GO were obtained 151.06 and 178.67 mg g−1, respectively. Interestingly, GO and AMPA-GO both showed a higher preference for thorium over uranium so that the average “K d (Th)/K d (U)” for them was 52 and 44, respectively. This data suggests that chromatographic separation of thorium and uranium is feasible by these adsorbents.

Keywords: (aminomethyl)phosphonicacid; formation mechanism; grapheneoxide; rapid adsorption kinetics; selectivity
Corresponding author: Fazel Zahakifar, Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O. Box: 11365-8486 Tehran, Iran, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Supplementary Material

The online version of this article offers supplementary material (https://doi.org/10.1515/ract-2021-1090).

Received: 2021-08-19
Accepted: 2021-10-29
Published Online: 2021-11-29
Published in Print: 2022-01-27

© 2021 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Activation cross sections of some neutron-induced reactions in the energy range of 13.82–14.71 MeV
  4. New reference materials for trace-levels of actinide elements in plutonium
  5. Adsorption properties and mechanism of uranium by three biomass materials
  6. Synthesis of “(aminomethyl)phosphonic acid-functionalized graphene oxide”, and comparison of its adsorption properties for thorium(IV) ion, with plain graphene oxide
  7. Review
  8. Application of response surface method in the separation of radioactive material: a review
  9. Original Paper
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https://doi.org/10.1515/ract-2021-1090
Keywords for this article
(aminomethyl)phosphonicacid; formation mechanism; grapheneoxide; rapid adsorption kinetics; selectivity

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Activation cross sections of some neutron-induced reactions in the energy range of 13.82–14.71 MeV
  4. New reference materials for trace-levels of actinide elements in plutonium
  5. Adsorption properties and mechanism of uranium by three biomass materials
  6. Synthesis of “(aminomethyl)phosphonic acid-functionalized graphene oxide”, and comparison of its adsorption properties for thorium(IV) ion, with plain graphene oxide
  7. Review
  8. Application of response surface method in the separation of radioactive material: a review
  9. Original Paper
  10. Preparation, characterization, and bioevaluation of 99mTc-famotidine as a selective radiotracer for peptic ulcer disorder detection in mice
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