Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater
Abstract
Activated carbon adsorbents modified with azo compounds (4-(2-pyridylazo)resorcinol, 1-(2-pyridylazo)-2-naphthol, 4-(2-thiazolylazo)resorcinol), or with allyl and vinylbenzyl derivatives of 4-(2-thiazolylazo)resorcinol, were observed to be highly effective in removing uranium from seawater and providing high loadings. Adsorbents consisting of azo compounds attached to fiber fabrics were prepared using silane coupling to attach azo reagents to silica fibers or mordanting agents such as tannic acid or aluminum acetate to attach them to cellulose fibers. Loadings of 15–45 mg U g-1 adsorbent were obtained. Scanning electron microscopy/energy dispersive X-ray spectroscopy measurements confirmed the presence of high concentrations of uranium on the surface of the silica-based and cellulose-based fibers.
- Authors:
-
- The Catholic Univ. of America, Washington, DC (United States)
- Univ. of Maryland, College Park, MD (United States)
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States); The Catholic Univ. of America, Washington, DC (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1498891
- Grant/Contract Number:
- NE0000723
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Adsorption Science and Technology
- Additional Journal Information:
- Journal Volume: 36; Journal Issue: 3-4; Journal ID: ISSN 0263-6174
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; uranium; seawater; azo dyes; silanization; mordants
Citation Formats
Pooley, Grace M., Adel-Hadadi, Mohammad A., Li, Weixing, Dietz, Travis C., and Barkatt, Aaron. Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater. United States: N. p., 2018.
Web. doi:10.1177/0263617418755170.
Pooley, Grace M., Adel-Hadadi, Mohammad A., Li, Weixing, Dietz, Travis C., & Barkatt, Aaron. Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater. United States. https://doi.org/10.1177/0263617418755170
Pooley, Grace M., Adel-Hadadi, Mohammad A., Li, Weixing, Dietz, Travis C., and Barkatt, Aaron. Tue .
"Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater". United States. https://doi.org/10.1177/0263617418755170. https://www.osti.gov/servlets/purl/1498891.
@article{osti_1498891,
title = {Silane coupling and mordanting as attachment techniques for pyridylazo and thiazolylazo ligands in the synthesis of adsorbents for uranium in seawater},
author = {Pooley, Grace M. and Adel-Hadadi, Mohammad A. and Li, Weixing and Dietz, Travis C. and Barkatt, Aaron},
abstractNote = {Activated carbon adsorbents modified with azo compounds (4-(2-pyridylazo)resorcinol, 1-(2-pyridylazo)-2-naphthol, 4-(2-thiazolylazo)resorcinol), or with allyl and vinylbenzyl derivatives of 4-(2-thiazolylazo)resorcinol, were observed to be highly effective in removing uranium from seawater and providing high loadings. Adsorbents consisting of azo compounds attached to fiber fabrics were prepared using silane coupling to attach azo reagents to silica fibers or mordanting agents such as tannic acid or aluminum acetate to attach them to cellulose fibers. Loadings of 15–45 mg U g-1 adsorbent were obtained. Scanning electron microscopy/energy dispersive X-ray spectroscopy measurements confirmed the presence of high concentrations of uranium on the surface of the silica-based and cellulose-based fibers.},
doi = {10.1177/0263617418755170},
journal = {Adsorption Science and Technology},
number = 3-4,
volume = 36,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 2018},
month = {Tue Jan 30 00:00:00 EST 2018}
}
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