Removal of arsenic and mercury species from water by covalent triazine framework encapsulated γ-Fe2O3 nanoparticles
(2018) Journal of Hazardous Materials — Vol. 353, p. 312-319 (2018)
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- The covalent triazine framework, CTF-1, served as host material for the in situ synthesis of Fe2O3 nanoparticles. The composite material consisted of 20 ± 2m% iron, mainly in γ-Fe2O3 phase. The resulting γ-Fe2O3@CTF-1 was examined for the adsorption of AsIII, AsV and HgII from synthetic solutions and real surface-, ground- and wastewater. The material shows excellent removal efficiencies, independent from the presence of Ca2+, Mg2+ or natural organic matter and only limited dependency on the presence of phosphate ions. Its adsorption capacity towards arsenite (198.0 mg g−1), arsenate (102.3 mg g−1) and divalent mercury (165.8 mg g−1) belongs amongst the best-known adsorbents, including many other iron-based materials. Regeneration of the adsorbent can be achieved for use over multiple cycles without a decrease in performance by elution at 70 °C with 0.1M
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Leus, K., Folens, K., Nicomel, N. R., Perez, J. P. H., Filippousi, M., Meledina, M., Dirtu, M., Turner, S., Van Tendeloo, G., Garcia, Y., Du Laing, G., & Van Der Voort, P. (2018). Removal of arsenic and mercury species from water by covalent triazine framework encapsulated γ-Fe2O3 nanoparticles. Journal of Hazardous Materials, 353, 312-319. https://doi.org/10.1016/j.jhazmat.2018.04.027 (Original work published 2018)