Selective Capture of Iodide from Solutions by Microrosette-like δ-Bi2O3

被引：120

作者：

Liu, Long ^{[1
]}

Liu, Wei ^{[2
]}

Zhao, Xiaoliang ^{[1
]}

Chen, Daimei ^{[3
]}

Cai, Rongsheng ^{[1
]}

Yang, Weiyou ^{[4
]}

Komarneni, Sridhar ^{[5
,6
]}

Yang, Dongjiang ^{[1
,7
]}

机构：

[1] Qingdao Univ, Coll Chem Chem & Environm Engn, Collaborat Innovat Ctr Marine Biomass Fibers Mat, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Lib Qingdao Univ, Qingdao 266071, Peoples R China

[3] China Univ Geosci, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing 100083, Peoples R China

[4] Ningbo Univ Technol, Inst Mat, Ningbo 315016, Zhejiang, Peoples R China

[5] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[6] Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA

[7] Griffith Univ, QMNC, Brisbane, Qld 4111, Australia

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 18期

基金：

中国国家自然科学基金;

关键词：

delta-Bi2O3; adsorbent; iodide uptake; Bi4I2O5; radioactive waste; selectivity; MEDICALLY-DERIVED I-131; RADIOACTIVE IODINE; THYROID-CANCER; PHOTOELECTRON-SPECTROSCOPY; REMNANT ABLATION; SORPTION; BISMUTH; OXIDE; ENTRAPMENT; ADSORPTION;

D O I：

10.1021/am504000n

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Radioactive iodine isotopes that are produced in nuclear power plants and used in medical research institutes could be a serious threat to the health of many people if accidentally released to the environment because the thyroid gland can absorb and concentrate them from a liquid. For this reason, uptake of iodide anions was investigated on microrosette-like delta-Bi2O3 (MR-delta-Bi2O3). The MR-delta-Bi2O3 adsorbent showed a very high uptake capacity of 1.44 mmol g(-1) by forming insoluble Bi4I2O5 phase. The MR-delta-Bi2O3 also displayed fast uptake kinetics and could be easily separated from a liquid after use because of its novel morphology. In addition, the adsorbent showed excellent selectivity for I- anions in the presence of large concentrations of competitive anions such as Cl- and CO32-, and could work in a wide pH range of 4-11. This study led to a new and highly efficient Bi-based adsorbent for iodide capture from solutions.

引用

页码：16082 / 16090

页数：9

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