TY - JOUR
T1 - Fluorescent Functionalized Mesoporous Silica for Radioactive Material Extraction
AU - Li, Juan
AU - Zhu, Kake
AU - Shang, Jianying
AU - Wang, Donghai
AU - Nie, Zimin
AU - Guo, Ruisong
AU - Liu, Chongxuan
AU - Wang, Zheming
AU - Li, Xiaolin
AU - Liu, Jun
N1 - Funding Information:
The authors thank Dr. B. Schwenzer for helpful suggestions. This research is supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award KC020105-FWP12152. The research is also supported by the DOE, Office of Biological and Environmental Research through a joint EPA-NSF-DOE research program. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle under Contract DE-AC05-76RL01830. Juan Li thanks the China Scholarship Council for partial financial support. Jun Liu also thanks Wayne Cosby at PNNL for his help in the preparation of this manuscript.
PY - 2012/6
Y1 - 2012/6
N2 - Mesoporous silica with covalently bound salicylic acid molecules incorporated in the structure was synthesized with a one-pot, co-condensation reaction at room temperature. The as-synthesized material has a large surface area, uniform particle size, and an ordered pore structure as determined by characterization with transmission electron microscopy, thermal gravimetric analysis, and infrared spectra, etc. Using the strong fluorescence and metal coordination capability of salicylic acid, functionalized mesoporous silica (FMS) was developed to track and extract radionuclide contaminants, such as uranyl [U(VI)] ions encountered in subsurface environments. Adsorption measurements showed a strong affinity of the FMS toward U(VI) with a K d value of 10 5 mL/g, which is four orders of magnitude higher than the adsorption of U(VI) onto most of the sediments in natural environments. The new materials have a potential for synergistic environmental monitoring and remediation of the radionuclide U(VI) from contaminated subsurface environments.
AB - Mesoporous silica with covalently bound salicylic acid molecules incorporated in the structure was synthesized with a one-pot, co-condensation reaction at room temperature. The as-synthesized material has a large surface area, uniform particle size, and an ordered pore structure as determined by characterization with transmission electron microscopy, thermal gravimetric analysis, and infrared spectra, etc. Using the strong fluorescence and metal coordination capability of salicylic acid, functionalized mesoporous silica (FMS) was developed to track and extract radionuclide contaminants, such as uranyl [U(VI)] ions encountered in subsurface environments. Adsorption measurements showed a strong affinity of the FMS toward U(VI) with a K d value of 10 5 mL/g, which is four orders of magnitude higher than the adsorption of U(VI) onto most of the sediments in natural environments. The new materials have a potential for synergistic environmental monitoring and remediation of the radionuclide U(VI) from contaminated subsurface environments.
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U2 - 10.1080/01496395.2012.655833
DO - 10.1080/01496395.2012.655833
M3 - Article
AN - SCOPUS:84863831243
SN - 0149-6395
VL - 47
SP - 1507
EP - 1513
JO - Separation Science and Technology (Philadelphia)
JF - Separation Science and Technology (Philadelphia)
IS - 10
ER -