6533b861fe1ef96bd12c4e9f

RESEARCH PRODUCT

Electrochemically triggered iodide-vacancy BiOI film for selective extraction of iodide ion from aqueous solutions

Guoqing GuanFengfeng GaoXiaogang HaoXiao DuOnofrio ScialdoneJun LiPengfei MaPengfei MaJinhua Luo

subject

chemistry.chemical_classificationAqueous solutionChemistryExtraction (chemistry)KineticsHigh selectivityInorganic chemistryIodideFiltration and Separation02 engineering and technologySettore ING-IND/27 - Chimica Industriale E Tecnologica021001 nanoscience & nanotechnologyIodide ions Iodide-vacancy BiOI film Electrochemically switched ion extraction Selective extraction Radioactive waterAnalytical ChemistryIonIodide ion020401 chemical engineeringVacancy defect0204 chemical engineering0210 nano-technology

description

Abstract The effective extraction and regeneration of radioactive iodide remains an urgent concern for safe nuclear energy utilization. Herein, we developed a novel electrochemically triggered iodide-vacancy BiOI film, which exhibited excellent I− ion extraction capacity of 328.3 mg·g−1. Especially, due to the ion vacancy trap effect, the film showed high selectivity towards I− ions in the existence of a large number of competitive anions. Additionally, the electrochemically switched ion extraction (ESIE) process with this iodide-vacancy BiOI film possessed fast extraction kinetics and high stability. More importantly, the trapped I− ions were easily desorbed from the film without the secondary pollution during the ESIE process and meanwhile, the iodide-vacancy BiOI film was able to be completely regenerated. It is expected that such an iodide-vacancy BiOI film with ESIE could become a promising process for the selective extraction of I− ions from the radioactive water.

yearjournalcountryeditionlanguage
2021-03-15
10.1016/j.seppur.2020.118120https://hdl.handle.net/10447/584021