Seisenbaeva, Gulaim
- The Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
Abstract
Mesoporous powders of transition-metal oxides, TiO2, ZrO2, HfO2, Nb2O5, and Ta2O5, pure from organic impurities were produced by a rapid single-step thermohydrolytic approach. The obtained materials display an impressively large active surface area and sharp pore-size distribution, being composed of partially coalesced uniform nanoparticles with crystalline cores and amorphous shells. They reveal extremely high adsorption capacity in removal of Cr-VI anions from solutions (25.8 for TiO2, 73.0 for ZrO2, and 74.7 mg g(-1) for Nb2O5 in relation to the Cr2O72- anion), making them very attractive as adsorbents in water remediation applications. The difference in adsorption capacities for the studied oxides may be explained by variation in surface hydration and surface-charge distribution.
Keywords
mesoporous oxides; nanostructures; sorption mechanism; thermohydrolysis; transition metals
Published in
Chemistry - A European Journal
2014, volume: 20, number: 34, pages: 10732-10736
SLU Authors
Daniel, Geoffrey
- Department of Forest Products, Swedish University of Agricultural Sciences
- Department of Forest Products, Swedish University of Agricultural Sciences
Kessler, Vadim
- The Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
- The Department of Chemistry and Biotechnology, Swedish University of Agricultural Sciences
Global goals (SDG)
SDG6 Clean water and sanitation
UKÄ Subject classification
Materials Chemistry
Inorganic Chemistry
Physical Chemistry
Publication identifier
- DOI: https://doi.org/10.1002/chem.201402691
Permanent link to this page (URI)
https://res.slu.se/id/publ/61916