Selective capture of iodide from solutions by microrosette-like δ-Bi2O3

Long Liu, Wei Liu, Xiaoliang Zhao, Daimei Chen, Rongsheng Cai, Weiyou Yang, Sridhar Komarneni, Dongjiang Yang

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

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 δBi2O3 (MR-δ-Bi2O3). The MR-δ-Bi2O3 adsorbent showed a very high uptake capacity of 1.44 mmol g-1 by forming insoluble Bi4I2O5 phase. The MR-δ-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.

Original languageEnglish (US)
Pages (from-to)16082-16090
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number18
DOIs
StatePublished - Sep 24 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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