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

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

7 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",

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journal = "Inorganica Chimica Acta",

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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 - http://www.scopus.com/inward/record.url?scp=85192798633&partnerID=8YFLogxK

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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