Plutonium complexation by phosphonate-functionalized mesoporous silica
Abstract
MCM-41-type mesoporous silica functionalized with the CMPO-based 'Ac-Phos' silane has been reported in the literature (1) to show good capacity as an acftinide sorbent material, with potential applications in environmental sequestration, aqueous waste separation and/or vitrification, and chemical sensing of actinides in solution. The study explores the complexation of Pu(IV and VI) and other selected actinides and lanthanides by SBA-15 type mesoporous silica functionalized with Ac-Phos. The Pu binding kinetics and binding capacity were determined for both the Ac-Phos functionalized and unmodified SBA-15. They analyzed the binding geometry and redox behavior of Pu(VI) by X-ray absorption spectroscopy (XAS). They discuss the synthesis and characterization of the functionalized mesoporous material, batch sorption experiments, and the detailed analyses of the actinide complexes that are formed. Structural measurements are paired with high-level quantum mechanical modeling to elucidate the binding mechanisms.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1016927
- Report Number(s):
- LLNL-CONF-461496
TRN: US1103151
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Conference
- Resource Relation:
- Conference: Presented at: 241th ACS National Meeting, Anaheim, CA, United States, Mar 27 - Mar 31, 2011
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; ACTINIDE COMPLEXES; ACTINIDES; CAPACITY; GEOMETRY; KINETICS; PLUTONIUM; RARE EARTHS; SILANES; SILICA; SIMULATION; SORPTION; SYNTHESIS; VITRIFICATION; WASTES
Citation Formats
Parsons-Moss, T, Schwaiger, L K, Hubaud, A, Hu, Y J, Tuysuz, H, Yang, P, Balasubramanian, K, and Nitsche, H. Plutonium complexation by phosphonate-functionalized mesoporous silica. United States: N. p., 2010.
Web.
Parsons-Moss, T, Schwaiger, L K, Hubaud, A, Hu, Y J, Tuysuz, H, Yang, P, Balasubramanian, K, & Nitsche, H. Plutonium complexation by phosphonate-functionalized mesoporous silica. United States.
Parsons-Moss, T, Schwaiger, L K, Hubaud, A, Hu, Y J, Tuysuz, H, Yang, P, Balasubramanian, K, and Nitsche, H. 2010.
"Plutonium complexation by phosphonate-functionalized mesoporous silica". United States. https://www.osti.gov/servlets/purl/1016927.
@article{osti_1016927,
title = {Plutonium complexation by phosphonate-functionalized mesoporous silica},
author = {Parsons-Moss, T and Schwaiger, L K and Hubaud, A and Hu, Y J and Tuysuz, H and Yang, P and Balasubramanian, K and Nitsche, H},
abstractNote = {MCM-41-type mesoporous silica functionalized with the CMPO-based 'Ac-Phos' silane has been reported in the literature (1) to show good capacity as an acftinide sorbent material, with potential applications in environmental sequestration, aqueous waste separation and/or vitrification, and chemical sensing of actinides in solution. The study explores the complexation of Pu(IV and VI) and other selected actinides and lanthanides by SBA-15 type mesoporous silica functionalized with Ac-Phos. The Pu binding kinetics and binding capacity were determined for both the Ac-Phos functionalized and unmodified SBA-15. They analyzed the binding geometry and redox behavior of Pu(VI) by X-ray absorption spectroscopy (XAS). They discuss the synthesis and characterization of the functionalized mesoporous material, batch sorption experiments, and the detailed analyses of the actinide complexes that are formed. Structural measurements are paired with high-level quantum mechanical modeling to elucidate the binding mechanisms.},
doi = {},
url = {https://www.osti.gov/biblio/1016927},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Oct 27 00:00:00 EDT 2010},
month = {Wed Oct 27 00:00:00 EDT 2010}
}