Am(III) sorption onto TiO2 samples with different crystallinity and varying pore size distributions
Nadezda N Gracheva
1
,
Eugene A Smirnov
1
,
Maria A Meledina
1
,
Alexey V. Garshev
1
,
Eugene A Shirshin
2
,
V.V. Fadeev
2
,
Stepan N. Kalmykov
3, 4
4
Department of Chemistry, Moscow Russia
|
Publication type: Journal Article
Publication date: 2014-03-01
scimago Q1
wos Q1
SJR: 1.001
CiteScore: 6.7
Impact factor: 3.4
ISSN: 08832927, 18729134
Environmental Chemistry
Geochemistry and Petrology
Pollution
Abstract
Various parameters influence the kinetics and the thermodynamics (surface complexation) of cation sorption onto minerals, including the pHPZC, the pHIEP, the crystallinity, the pore size distribution, and the surface roughness. In this paper, we address the effect of two of these parameters, i.e., the crystal structure and the pore size distribution on Am3+/Eu3+ sorption onto crystalline (anatase) and amorphous TiO2 microspheres. For both samples, the sorbed cation speciation was found to be the same, as determined by time-resolved laser-induced fluorescence spectroscopy (TRLIFS). As determined from sorption studies, the variation in the crystallinity of TiO2 defines its рНPZC and has a dominant effect on the cation sorption onto a mineral surface, whereas the pore size distribution has a minor effect on the Am3+ distribution. Surface complexation data were obtained from sorption data that fits well with other cation sorption onto TiO2, as determined from the linear free-energy relationship (LFER).
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Total citations:
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Citations from 2024:
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GOST
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Gracheva N. N. et al. Am(III) sorption onto TiO2 samples with different crystallinity and varying pore size distributions // Applied Geochemistry. 2014. Vol. 42. pp. 69-76.
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Gracheva N. N., Romanchuk A. Yu., Smirnov E. A., Meledina M. A., Garshev A. V., Shirshin E. A., Fadeev V., Kalmykov S. N. Am(III) sorption onto TiO2 samples with different crystallinity and varying pore size distributions // Applied Geochemistry. 2014. Vol. 42. pp. 69-76.
Cite this
RIS
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TY - JOUR
DO - 10.1016/J.APGEOCHEM.2014.01.006
UR - https://linkinghub.elsevier.com/retrieve/pii/S0883292714000080
TI - Am(III) sorption onto TiO2 samples with different crystallinity and varying pore size distributions
T2 - Applied Geochemistry
AU - Gracheva, Nadezda N
AU - Romanchuk, Anna Yu
AU - Smirnov, Eugene A
AU - Meledina, Maria A
AU - Garshev, Alexey V.
AU - Shirshin, Eugene A
AU - Fadeev, V.V.
AU - Kalmykov, Stepan N.
PY - 2014
DA - 2014/03/01
PB - Elsevier
SP - 69-76
VL - 42
SN - 0883-2927
SN - 1872-9134
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2014_Gracheva,
author = {Nadezda N Gracheva and Anna Yu Romanchuk and Eugene A Smirnov and Maria A Meledina and Alexey V. Garshev and Eugene A Shirshin and V.V. Fadeev and Stepan N. Kalmykov},
title = {Am(III) sorption onto TiO2 samples with different crystallinity and varying pore size distributions},
journal = {Applied Geochemistry},
year = {2014},
volume = {42},
publisher = {Elsevier},
month = {mar},
url = {https://linkinghub.elsevier.com/retrieve/pii/S0883292714000080},
pages = {69--76},
doi = {10.1016/J.APGEOCHEM.2014.01.006}
}