Chemistry of Materials
Article
Few results involving copper hexacyanoferrate loaded onto
inorganic supports have been published. The majority of the
published work regards nanocomposites containing PBA
included other types of hexacyanoferrate, such as Co or
ASSOCIATED CONTENT
Supporting Information
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*
S
FT-IR spectra of the azido- and triazole-based materials (Figure
13
S1); C solid-state NMR of the azido and triazole materials
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1,27,28
Ni.
because the sorbent differs in nature.
For copper PBA, comparable distribution coefficients (10 −
However, the comparison is not relevant in this case
(
Figure S2); FT-IR of the SBA-CuFC and GP-CuFC
nanocomposites (Figure S3) and X-EDS analysis for the PG-
triazole and PG-CuFC (Figure S4); EPR analysis for the PG-
triazole (Figure S5); composition of the materials as
determined by elemental analysis (Table S1); and nitrogen
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1
0 mL/g) were reported by Milyutin et al. for different
composite materials (silica-, alumina-, or zirconia-based
materials loaded with copper hexacyanoferrate) under com-
1
37
−1
parable conditions (Ci( Cs) = 10 kBq L in alkaline solution
simulating the bottom residue from a nuclear power plant using
a WWER-type reactor over 48 h with a V/M equal to 2000
AUTHOR INFORMATION
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3
0
mL/g). Similarly, Tsuruoka et al. reported a Kd of
Corresponding Authors
4
approximately 5 × 10 mL/g for an adsorbent containing
copper ferrocyanides, diatomites, and carbon nanotubes under
different adsorption conditions with a much lower initial Cs
concentration (1.47 kBq/L). However, the distribution
coefficients obtained for our nanocomposites are lower than
Notes
14b
those of Sangvanish et al., who used self-assembled copper
The authors declare no competing financial interest.
5
ferrocyanide on a mesoporous silica absorbent (K ≈ 1 × 10
d
mL/g), but their result was obtained with a V/M of 2000 mL/g
and an initial Cs concentration of 0.5 ppm.
ACKNOWLEDGMENTS
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This work was supported by the University of Montpellier II,
the Matinex and the Paris National Research Groups, the CEA,
and the CNRS. We thank Johann Ravaud for assistance with
the SEM experiments, Henry-Pierre Brau for assistance with the
TEM experiments, Bruno Corso for assistance with the XRD
experiments, and Guillaume Serve and Celia Lepeytre for their
́
assistance with the radioactive experiments.
Therefore, as compared to the literature, this work obtained
competitive K values, even in saline solutions such as seawater.
d
The size of the glass pearl nanocomposites was between 200
and 500 μm, making them an ideal candidate for decontami-
nation in a continuous process, such as in a column or
cartridge. Moreover, because the pores of the glass-based
nanocomposites close after decontamination, these materials
should efficiently confine and store radioactive species.
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dx.doi.org/10.1021/cm4029935 | Chem. Mater. 2013, 25, 4447−4453