Extraction behaviors of uranyl peroxo cage clusters by mesoporous silica SBA-15

Yi Liu; Alicia Czarnecki; Jennifer E.S. Szymanowski; Ginger E. Sigmon; Peter C. Burns

doi:10.1007/s10967-016-4801-x

Extraction behaviors of uranyl peroxo cage clusters by mesoporous silica SBA-15

Yi Liu
, Alicia Czarnecki
, Jennifer E.S. Szymanowski
, Ginger E. Sigmon
, Peter C. Burns

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Sorption of soluble uranyl peroxo cage clusters (U60 [UO₂(O₂)(OH)]₆₀ ⁶⁰⁻ and U24Pp [(UO₂)₂₄(O₂)₂₄(P₂O₇)₁₂]⁴⁸⁻) by mesoporous sorbent SBA-15 has been studied. Sorption kinetics of U60 and U24Pp are both best described by a pseudo-second-order model. However, only in the U60 sorption, intraparticle diffusion is the rate-determining step, and both pore size and pore volume of SBA-15 positively influence the U sorption capacity. Sorption isotherms of U60 and U24Pp are better fitted by the Langmuir and Freundlich isotherm models, respectively. The differences of sorption behaviors between two clusters by SBA-15 may result from differences of the sizes and terminal ligands of the clusters.

Original language	English
Pages (from-to)	453-462
Number of pages	10
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	310
Issue number	1
DOIs	https://doi.org/10.1007/s10967-016-4801-x
State	Published - Oct 1 2016
Externally published	Yes

Keywords

Hydrogen bonding
Solid liquid extraction
Uranium removal
Uranyl peroxo cage clusters

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10.1007/s10967-016-4801-x

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title = "Extraction behaviors of uranyl peroxo cage clusters by mesoporous silica SBA-15",

abstract = "Sorption of soluble uranyl peroxo cage clusters (U60 [UO2(O2)(OH)]60 60− and U24Pp [(UO2)24(O2)24(P2O7)12]48−) by mesoporous sorbent SBA-15 has been studied. Sorption kinetics of U60 and U24Pp are both best described by a pseudo-second-order model. However, only in the U60 sorption, intraparticle diffusion is the rate-determining step, and both pore size and pore volume of SBA-15 positively influence the U sorption capacity. Sorption isotherms of U60 and U24Pp are better fitted by the Langmuir and Freundlich isotherm models, respectively. The differences of sorption behaviors between two clusters by SBA-15 may result from differences of the sizes and terminal ligands of the clusters.",

keywords = "Hydrogen bonding, Solid liquid extraction, Uranium removal, Uranyl peroxo cage clusters",

author = "Yi Liu and Alicia Czarnecki and Szymanowski, \{Jennifer E.S.\} and Sigmon, \{Ginger E.\} and Burns, \{Peter C.\}",

note = "Publisher Copyright: {\textcopyright} 2016, Akad{\'e}miai Kiad{\'o}, Budapest, Hungary.",

year = "2016",

month = oct,

day = "1",

doi = "10.1007/s10967-016-4801-x",

language = "English",

volume = "310",

pages = "453--462",

journal = "Journal of Radioanalytical and Nuclear Chemistry",

issn = "0236-5731",

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TY - JOUR

T1 - Extraction behaviors of uranyl peroxo cage clusters by mesoporous silica SBA-15

AU - Liu, Yi

AU - Czarnecki, Alicia

AU - Szymanowski, Jennifer E.S.

AU - Sigmon, Ginger E.

AU - Burns, Peter C.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Sorption of soluble uranyl peroxo cage clusters (U60 [UO2(O2)(OH)]60 60− and U24Pp [(UO2)24(O2)24(P2O7)12]48−) by mesoporous sorbent SBA-15 has been studied. Sorption kinetics of U60 and U24Pp are both best described by a pseudo-second-order model. However, only in the U60 sorption, intraparticle diffusion is the rate-determining step, and both pore size and pore volume of SBA-15 positively influence the U sorption capacity. Sorption isotherms of U60 and U24Pp are better fitted by the Langmuir and Freundlich isotherm models, respectively. The differences of sorption behaviors between two clusters by SBA-15 may result from differences of the sizes and terminal ligands of the clusters.

AB - Sorption of soluble uranyl peroxo cage clusters (U60 [UO2(O2)(OH)]60 60− and U24Pp [(UO2)24(O2)24(P2O7)12]48−) by mesoporous sorbent SBA-15 has been studied. Sorption kinetics of U60 and U24Pp are both best described by a pseudo-second-order model. However, only in the U60 sorption, intraparticle diffusion is the rate-determining step, and both pore size and pore volume of SBA-15 positively influence the U sorption capacity. Sorption isotherms of U60 and U24Pp are better fitted by the Langmuir and Freundlich isotherm models, respectively. The differences of sorption behaviors between two clusters by SBA-15 may result from differences of the sizes and terminal ligands of the clusters.

KW - Hydrogen bonding

KW - Solid liquid extraction

KW - Uranium removal

KW - Uranyl peroxo cage clusters

UR - https://www.scopus.com/pages/publications/84962276086

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DO - 10.1007/s10967-016-4801-x

M3 - Article

AN - SCOPUS:84962276086

SN - 0236-5731

VL - 310

SP - 453

EP - 462

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

IS - 1

ER -

Extraction behaviors of uranyl peroxo cage clusters by mesoporous silica SBA-15

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Keywords

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