skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: