Bismuth-embedded columnar activated carbon for gaseous radiodine capture

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science and Engineering: B Pub Date : 2025-03-04 DOI:10.1016/j.mseb.2025.118186

Hao Zou , Hailong Dong , Wanjiang You , Shilong Song , Lei Liao , Gaoling Liang , Ning Pan , Hao Lei , Xiaoqiang Wang

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Abstract

The bismuth-embedded columnar activated carbon (Bi-AC) composite was prepared by the method of self-reduction and investigated for trapping I₂ and CH₃I. Our findings showed that the bismuth-based compounds mainly existed as simple substance in Bi-AC. The elemental bismuth was regularly spherical in the shape, and mostly embedded on the surface of activated carbon, seldom inside of activated carbon. The capture capacities of I₂ and CH₃I by the Bi-AC composite was 569.0 ± 14.2 and 232.1 ± 17.7 mg/g, respectively, which was better than that of the commercial silver-based materials. I₂ was trapped to form I₅^- and Bi(IO₃)₃, while CH₃I was catalytically cleaved to form BiOI and I₅^-. The Bi-AC composite is expected be used as adsorbents of ¹²⁹I to replace silver-based materials due to its high performance and low cost.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.