Systematic effect of different external metals of hexacyanoferrates on cesium adsorption behavior and mechanism

Caiyong Nong; Xiaodong Li; Junhua Xu

doi:10.1007/s10967-022-08721-3

Systematic effect of different external metals of hexacyanoferrates on cesium adsorption behavior and mechanism

Caiyong Nong, Xiaodong Li, Junhua Xu

Department of Chemistry

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

Abstract

This study aims to investigate Cs removal by different external metals hexacyanoferrates M^II–Fe PBA (M^II: Co, Ni and Cu). Three PBAs were synthesized, characterized and followed by batch experiment testing and model fitting. Among the three PBAs, Cu–Fe PBA possessed the highest capacity 234.28 mg g⁻¹, the highest K_d 2.8 × 10⁶ mL g⁻¹ and the fastest adsorption kinetics on Cs removal. Moreover, Cu–Fe PBA and Ni–Fe PBA were the more selective sorbents in coexisting ions study. Finally, the adsorption mechanism was proposed. This study provides new insights into the vacancies effect of the PBA structure and Cs adsorption application.

Original language	English
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	332
Issue number	4
Pages (from-to)	1263-1275
Number of pages	13
ISSN	0236-5731
DOIs	https://doi.org/10.1007/s10967-022-08721-3
Publication status	Published - Apr 2023
MoE publication type	A1 Journal article-refereed

Bibliographical note

Publisher Copyright:
© 2023, Akadémiai Kiadó, Budapest, Hungary.

Fields of Science

Adsorption mechanism
Cesium removal
Hexacyanoferrates
Ion exchange
Vacancies
116 Chemical sciences

Access to Document

10.1007/s10967-022-08721-3

Cite this

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title = "Systematic effect of different external metals of hexacyanoferrates on cesium adsorption behavior and mechanism",

abstract = "This study aims to investigate Cs removal by different external metals hexacyanoferrates MII–Fe PBA (MII: Co, Ni and Cu). Three PBAs were synthesized, characterized and followed by batch experiment testing and model fitting. Among the three PBAs, Cu–Fe PBA possessed the highest capacity 234.28 mg g−1, the highest Kd 2.8 × 106 mL g−1 and the fastest adsorption kinetics on Cs removal. Moreover, Cu–Fe PBA and Ni–Fe PBA were the more selective sorbents in coexisting ions study. Finally, the adsorption mechanism was proposed. This study provides new insights into the vacancies effect of the PBA structure and Cs adsorption application.",

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T1 - Systematic effect of different external metals of hexacyanoferrates on cesium adsorption behavior and mechanism

AU - Nong, Caiyong

AU - Li, Xiaodong

AU - Xu, Junhua

PY - 2023/4

Y1 - 2023/4

N2 - This study aims to investigate Cs removal by different external metals hexacyanoferrates MII–Fe PBA (MII: Co, Ni and Cu). Three PBAs were synthesized, characterized and followed by batch experiment testing and model fitting. Among the three PBAs, Cu–Fe PBA possessed the highest capacity 234.28 mg g−1, the highest Kd 2.8 × 106 mL g−1 and the fastest adsorption kinetics on Cs removal. Moreover, Cu–Fe PBA and Ni–Fe PBA were the more selective sorbents in coexisting ions study. Finally, the adsorption mechanism was proposed. This study provides new insights into the vacancies effect of the PBA structure and Cs adsorption application.

AB - This study aims to investigate Cs removal by different external metals hexacyanoferrates MII–Fe PBA (MII: Co, Ni and Cu). Three PBAs were synthesized, characterized and followed by batch experiment testing and model fitting. Among the three PBAs, Cu–Fe PBA possessed the highest capacity 234.28 mg g−1, the highest Kd 2.8 × 106 mL g−1 and the fastest adsorption kinetics on Cs removal. Moreover, Cu–Fe PBA and Ni–Fe PBA were the more selective sorbents in coexisting ions study. Finally, the adsorption mechanism was proposed. This study provides new insights into the vacancies effect of the PBA structure and Cs adsorption application.

KW - Adsorption mechanism

KW - Cesium removal

KW - Hexacyanoferrates

KW - Ion exchange

KW - Vacancies

KW - 116 Chemical sciences

U2 - 10.1007/s10967-022-08721-3

DO - 10.1007/s10967-022-08721-3

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SP - 1263

EP - 1275

JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

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