期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 306, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2020.110386
关键词
Metal-organic frameworks; Hybrid aerogels; Iodine adsorption; Doping method; Hofmann-type
类别
资金
- National Natural Science Foundation of China [51672251]
- Science Foundation of Zhejiang Sci-Tech University (ZSTU) [13012138-Y]
It is of great significance to capture radioiodine from nuclear-related activities. Herein, We fabricated two kinds of hybrid aerogels composed with bimetal Hofmann-type metal-organic frameworks (Co-Fe)(II)(pz)[Ni-II(CN)(4)] and cellulose aerogels by in-situ growth and doping method (named CoFe@CA-IS and CoFe@CA-D, respectively). The hybrid aerogels possessed excellent iodine adsorption performance. The addition of (Co-Fe)(II)(pz)[Ni-II(CN)(4)] increased the porosity of the hybrid aerogels. The porosities of CoFe@CA-IS and CoFe@CA-D were reached 86.7% and 87.8%, respectively, which are higher than pure cellulose aerogels. Furthermore, the doping method provide a significant improve of adsorption performance. The equilibrium adsorption capacity of CoFe@CA-D reached 457.99 mg g(-1) and the equilibrium adsorption capacity of CoFe@CA-IS was 194.34 mg g(-1). In addition, the hybrid aerogels showed excellent recycle ability, the equilibrium adsorption capacity of CoFe@CA-IS and CoFe@CA-D remained 81% and 91% after 5 cycles. The results suggested that this metal-organic framework@cellulose hybrid aerogel showed great potential in iodine treatment and could be applied in a wide field.
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