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Efficient Capture of Radioactive Strontium from Water Using Magnetic WO 3 Assembled on Grapheme Oxide Nanocomposite
Author(s) -
Mou Wanjun,
Du Shenzhen,
Yu Qianhong,
Li Xingliang,
Wei Hongyuan,
Yang Yuchuan
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800891
Subject(s) - adsorption , nanocomposite , strontium , materials science , aqueous solution , langmuir adsorption model , nanoparticle , chemical engineering , nuclear chemistry , oxide , nanotechnology , chemistry , organic chemistry , metallurgy , engineering
Novel core‐shell magnetic Fe 3 O 4 @WO 3 @GO nanocomposites were synthesized and used to remove radioactive strontium from aqueous solution. Taking advantage of the combined benefits of GO and magnetic WO 3 nanoparticles, Fe 3 O 4 @WO 3 @GO nanocomposites exhibited excellent adsorption capability for removing Sr 2+ . Results for Sr 2+ adsorption on Fe 3 O 4 @WO 3 @GO have a good fit with a Langmuir isotherm and a pseudo‐second‐order kinetic model. The maximum adsorption capacity is 61.42 mg g −1 , which is higher than that of other similar adsorbents. The high adsorption capacity of Fe 3 O 4 @WO 3 @GO can be attributed to the good dispersion of magnetic WO 3 on the surface of GO, efficiently reducing the aggregation of nanoparticles and enhancing the probability for contact between adsorbent and adsorbate. In addition, the Fe 3 O 4 @WO 3 @GO nanocomposites exhibited excellent reusability, after 5 uses there was no noticeable loss in adsorption capacity. Thus, this type of nanocomposite to hold excellent is promising for clean‐up of radioactive strontium from wastewater.