Modifying Fe3O4 microspheres with rhodamine hydrazide for selective detection and removal of Hg2+ ion in water.
Modifying Fe3O4 microspheres with rhodamine hydrazide for selective detection and removal of Hg2+ ion in water.
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DOI：
10.1016/j.jhazmat.2012.10.050
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发表时间：
2013-01
影响因子：
13.6
通讯作者：
Zhuqing Wang;Dayu Wu;Genhua Wu;Ningning Yang;A. Wu
中科院分区：
文献类型：
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作者：
Zhuqing Wang;Dayu Wu;Genhua Wu;Ningning Yang;A. Wu
Rhodamine hydrazide modifying Fe3O4microspheres (Fe3O4-R6G) was developed for selective detection and removal of mercury ion from water. With a saturation magnetization of 74.2emu/g, the Fe3O4-R6G could be simply recollected from water with magnetic separation within a few minutes. The selectivity and adsorption ability of Fe3O4-R6G for metal cations were studied by fluorophotometry and atomic absorption spectrometry, respectively. The results showed that Fe3O4-R6G exhibited excellent selectivity for sensing mercury ion over other metal ions in aqueous solution, and also adsorbed 91% of mercury ion. The maximum adsorption capacity of the Fe3O4-R6G for Hg2+ion was 37.4μmolg−1. The Fe3O4-R6G was successfully applied to the determination of Hg2+in environmental samples, and could be used repeatedly by treatment with tetrabutylammonium hydroxide.
