Study on the microstructure and adsorption mechanism of different silver-based iodine adsorbents

Sen Chang; Jian Li; Yongguo Li; Jian Li Chen; Xuemei Song; Jianrong Hou; Dangui Qiu; Xueping Zhang; Zhaochen Zhang; Ruiyun Wang; Baoliang Zhang

doi:10.1016/j.ica.2024.122135

Study on the microstructure and adsorption mechanism of different silver-based iodine adsorbents

Sen Chang
, Jian Li
, Yongguo Li
, Jian Li Chen
, Xuemei Song
, Jianrong Hou
, Dangui Qiu
, Xueping Zhang
, Zhaochen Zhang
, Ruiyun Wang
, Baoliang Zhang

School of Chemistry and Chemical Engineering

China National Nuclear Corporation
Northwestern Polytechnical University Xian

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

12 Scopus citations

Abstract

To further clarify the iodine adsorption mechanism of three-dimensional ordered macroporous silver-silica (3DOM-SA) composite aerogel, based on the establishment of the relationship between pore structure and adsorption properties, the kinetic analysis of the adsorption process of gaseous iodine was carried out, and a comprehensive comparison was made with silver nitrate impregnated silica (AgS) which has been applied in engineering. The results show that the adsorption of gaseous iodine by 3DOM-SA and AgS fits well with the pseudo-second-order and pseudo-first-order kinetic model, corresponding to the main roles played by chemical adsorption and physical adsorption. The iodine adsorption capacity of 3DOM-SA (925 ± 46 mg/g) is much larger than that of AgS (64 ± 11 mg/g) due to the 3DOM structure and more dispersed nano-active components.

Original language	English
Article number	122135
Journal	Inorganica Chimica Acta
Volume	569
DOIs	https://doi.org/10.1016/j.ica.2024.122135
State	Published - 1 Sep 2024

Keywords

Gaseous iodine adsorption
Kinetics
Microstructure
Silver nitrate impregnated silica
Silver-silica aerogel

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10.1016/j.ica.2024.122135

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title = "Study on the microstructure and adsorption mechanism of different silver-based iodine adsorbents",

abstract = "To further clarify the iodine adsorption mechanism of three-dimensional ordered macroporous silver-silica (3DOM-SA) composite aerogel, based on the establishment of the relationship between pore structure and adsorption properties, the kinetic analysis of the adsorption process of gaseous iodine was carried out, and a comprehensive comparison was made with silver nitrate impregnated silica (AgS) which has been applied in engineering. The results show that the adsorption of gaseous iodine by 3DOM-SA and AgS fits well with the pseudo-second-order and pseudo-first-order kinetic model, corresponding to the main roles played by chemical adsorption and physical adsorption. The iodine adsorption capacity of 3DOM-SA (925 ± 46 mg/g) is much larger than that of AgS (64 ± 11 mg/g) due to the 3DOM structure and more dispersed nano-active components.",

keywords = "Gaseous iodine adsorption, Kinetics, Microstructure, Silver nitrate impregnated silica, Silver-silica aerogel",

author = "Sen Chang and Jian Li and Yongguo Li and Chen, \{Jian Li\} and Xuemei Song and Jianrong Hou and Dangui Qiu and Xueping Zhang and Zhaochen Zhang and Ruiyun Wang and Baoliang Zhang",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = sep,

day = "1",

doi = "10.1016/j.ica.2024.122135",

language = "英语",

volume = "569",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Study on the microstructure and adsorption mechanism of different silver-based iodine adsorbents

AU - Chang, Sen

AU - Li, Jian

AU - Li, Yongguo

AU - Chen, Jian Li

AU - Song, Xuemei

AU - Hou, Jianrong

AU - Qiu, Dangui

AU - Zhang, Xueping

AU - Zhang, Zhaochen

AU - Wang, Ruiyun

AU - Zhang, Baoliang

PY - 2024/9/1

Y1 - 2024/9/1

N2 - To further clarify the iodine adsorption mechanism of three-dimensional ordered macroporous silver-silica (3DOM-SA) composite aerogel, based on the establishment of the relationship between pore structure and adsorption properties, the kinetic analysis of the adsorption process of gaseous iodine was carried out, and a comprehensive comparison was made with silver nitrate impregnated silica (AgS) which has been applied in engineering. The results show that the adsorption of gaseous iodine by 3DOM-SA and AgS fits well with the pseudo-second-order and pseudo-first-order kinetic model, corresponding to the main roles played by chemical adsorption and physical adsorption. The iodine adsorption capacity of 3DOM-SA (925 ± 46 mg/g) is much larger than that of AgS (64 ± 11 mg/g) due to the 3DOM structure and more dispersed nano-active components.

AB - To further clarify the iodine adsorption mechanism of three-dimensional ordered macroporous silver-silica (3DOM-SA) composite aerogel, based on the establishment of the relationship between pore structure and adsorption properties, the kinetic analysis of the adsorption process of gaseous iodine was carried out, and a comprehensive comparison was made with silver nitrate impregnated silica (AgS) which has been applied in engineering. The results show that the adsorption of gaseous iodine by 3DOM-SA and AgS fits well with the pseudo-second-order and pseudo-first-order kinetic model, corresponding to the main roles played by chemical adsorption and physical adsorption. The iodine adsorption capacity of 3DOM-SA (925 ± 46 mg/g) is much larger than that of AgS (64 ± 11 mg/g) due to the 3DOM structure and more dispersed nano-active components.

KW - Gaseous iodine adsorption

KW - Kinetics

KW - Microstructure

KW - Silver nitrate impregnated silica

KW - Silver-silica aerogel

UR - https://www.scopus.com/pages/publications/85192798633

U2 - 10.1016/j.ica.2024.122135

DO - 10.1016/j.ica.2024.122135

M3 - 文章

AN - SCOPUS:85192798633

SN - 0020-1693

VL - 569

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

M1 - 122135

ER -

Study on the microstructure and adsorption mechanism of different silver-based iodine adsorbents

Abstract

Keywords

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