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Efficient removal of uranium (VI) from aqueous solution by thiol-functionalized montmorillonite/nanoscale zero-valent iron composite

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Abstract

Montmorillonite-supported nanoscale zero-valent iron composite functionalized by thiols (nZVI/Mt-SH) was synthesized by a two-step co-precipitation method for uranium (IV) removal from water. The SEM investigation showed that the morphology of nZVI/Mt was successfully modified by the (3-Mercaptopropyl) trimethoxysilane. The optimal adsorption efficiencies could be attributed to the synergetic behavior between SH-functionalized clay and iron nanoparticles. Analysis of the removal kinetics indicated the feature of monolayer chemisorption. The intraparticle diffusion exploration by Weber-Morris model illustrated a multi-phase removal process. This work suggests that the as-synthesized particles could be used as an efficient adsorbent to remove U(VI) from contaminated water sources.

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Acknowledgements

The National Natural Science Foundation of China (NSFC, Grant numbers 42061134018, 42011530085) and the Russian Science Foundation (RSF, Grant number 21-47-00019) supported this work.

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  1. School of Environment and Resource, Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, China

    Edward Opong Acheampong, Ke Wang, Rui Lv, Sen Lin & Shiyong Sun

  2. Yushkin’s Institute of Geology, Komi Science Center, Ural Branch of RAS, ul Pervomayskaya, 54, Syktyvkar, 167982, Russia

    Yevgeny Aleksandrovich Golubev & Olga Borisovna Kotova

  3. Mining State University St. Petersburg, 21st Line, St., Petersburg, 199106, Russia

    Elena Leonidovna Kotova

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Acheampong, E.O., Wang, K., Lv, R. et al. Efficient removal of uranium (VI) from aqueous solution by thiol-functionalized montmorillonite/nanoscale zero-valent iron composite. J Radioanal Nucl Chem 332, 1989–2002 (2023). https://doi.org/10.1007/s10967-023-08847-y

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