Surfactant-assisted adsorption of uranyl ions in aqueous solution on TiO2/polythiophene nanocomposite.
Environ Sci Pollut Res Int
; 28(28): 37182-37194, 2021 Jul.
Article
em En
| MEDLINE
| ID: mdl-33713259
ABSTRACT
In this work, hexadecyltrimethylammonium-bromide (HTAB)-modified polythiophene (PTh)/TiO2 nanocomposite (HTAB/PTh/TiO2) was applied to remove uranyl ions (UO22+). FT-IR, XRD, ζ potential, TGA, SEM, and XPS were utilized to obtain the chemical and physical properties of HTAB/PTh/TiO2. The effects of HTAB content, preparation temperature, and adsorption conditions on UO22+ removal were investigated comprehensively. And the UO22+ adsorption process on HTAB/PTh/TiO2 was fitted to the Sips model with a saturated adsorption capacity of 234.74 mg/g, which was 6 times over TiO2. The results suggested that the surfactant of HTAB can significantly improve the adsorption ability of TiO2 for UO22+ ions. This work provides a strategy of surfactant modification for enhancing the separation and recovery ability of adsorbent toward UO22+ in the radioactive wastewater.
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MEDLINE
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Tensoativos
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Nanocompostos
Idioma:
En
Ano de publicação:
2021
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Article