2D/2D Graphene Oxide-Layered Double Hydroxide Nanocomposite for the Immobilization of Different Radionuclides

Paulmanickam Koilraj, Keiko Sasaki

Research output: Chapter in Book/Report/Conference proceedingChapter


The growing human society discharges large quantities of radioactive waste to the surrounding environment. Efficient sorbent for such removal of radionuclides without causing secondary pollution is highly preferred. Graphene oxide (GO) is one among the effective sorbents for the removal of radionuclides. The removal of such radionuclides using stable two-dimensional (2D)/2D GO/layered double hydroxide (LDH) nanocomposites has been discussed in this report. It shows that the metal combination and the metal precursor used for the synthesis of LDH influenced the adsorption of U(VI) due to change in the structural and surface properties of the GO/LDH composite. Moreover, the composite sorbents enhanced the adsorption capacity of radionuclides due to the co-operative/synergetic effect of GO and LDH. The removal of cationic radionuclides was majorly removed by the interaction with the surface functional group of GO. To realize the anion exchange capacity of LDH in the GO/LDH composite, the co-immobilization of both Sr 2+ and SeO 4 2− ions has also been investigated. It showed the enhanced absorption capacity in GO/LDH composite due to the synergetic interaction between the adsorbents (GO and LDH) and adsorbates (Sr 2+ and SeO 4 2−). The use of GO/LDH composite for remaining radionuclide removal and the method development for the remediation of radionuclide in large scale provide the room for future research and development in this field.

Original languageEnglish
Title of host publication2D Functional Nanomaterials
Subtitle of host publicationSynthesis, Characterization, and Applications
Number of pages10
ISBN (Electronic)9783527823963
ISBN (Print)9783527346776
Publication statusPublished - Jan 1 2021

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Materials Science(all)


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