Abstract
Single and binary titanium and silicon xerogels were prepared to evaluate and compare their sorption performance with commercial sorbents (Al2O3 and TiO2) used for the 99Mo/99mTc separation, under neutral pH and room temperature conditions. Molybdenum sorption capacities were determined by batch equilibrium systems using Mo(VI) solutions labelled with 99Mo radiotracer. Ti-xerogel showed the highest 99Mo distribution coefficient and sorption capacity, while Si-xerogel exerted null affinity. Binary xerogels and reference sorbents showed similar capacities. Additionally, Ti-xerogel, after a heating process, drastically decreased its sorption capacity. Finally, a molybdenum sorption mechanism was studied.
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Acknowledgements
Authors are thankful to Juan Vidal for conducting radiochemical measurements and also to the Reactor Department personnel (ININ) for their assistance in the radionuclide production. Moreno-Gil would like to acknowledge the scholarship received from the Mexican National Council of Science and Technology (CONACyT-Mexico).
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Moreno-Gil, N., Badillo-Almaraz, V.E., Pérez-Hernández, R. et al. Comparison of the sorption behavior of 99Mo by Ti-, Si-, Ti-Si-xerogels and commercial sorbents. J Radioanal Nucl Chem 328, 679–690 (2021). https://doi.org/10.1007/s10967-021-07663-6
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DOI: https://doi.org/10.1007/s10967-021-07663-6