Nanomagnetic polyhedral oligomeric silsesquioxanes composite derived sulfur-containing adsorbents for effective elimination of hexavalent chromium and organic cationic dyes from water
Nanomagnetic polyhedral oligomeric silsesquioxanes composite derived sulfur-containing adsorbents for effective elimination of hexavalent chromium and organic cationic dyes from water
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纳米磁性多面体低聚倍半硅氧烷复合衍生含硫吸附剂可有效去除水中的六价铬和有机阳离子染料
DOI：
10.1016/j.colsurfa.2018.04.019
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发表时间：
2018-08
期刊：
影响因子：
--
通讯作者：
Luo Liqiang
中科院分区：
文献类型：
--
作者：
Wang Xin;Peng Ruifeng;He Haibo;Yan Xiaoxia;Zhu Shouzhe;Zhao Hongbin;Deng Dongmei;Yu Qiongwei;Lei Yunyi;Luo Liqiang
本文提出了一种从纳米磁性多面体低聚倍半硅氧烷复合材料(Fe3O4@POSS)出发设计功能齐全的磁性吸附剂的简便策略，可以有效地吸附和去除水溶液中的各种环境污染物。制得的Fe_3O_4@POSS-SH具有介孔结构，比表面积为649.41 m~2/g。然后用H_2O_2简单氧化Fe_3O_4@POSS-SH的硫醇部分，制得了磺酸盐功能化磁性吸附剂。Fe3O4+POSS-SH和Fe3O4+POSS-SO3H分别是去除铬(VI)和阳离子染料污染物(如中性红、亚甲蓝和吖黄素)的有效去污剂，其吸附容量分别为185.19 mg/g、185.19、175.44和128.21 mg/g。值得注意的是，在中等磁场下，这两种含硫Fe3O4@POSS都可以很容易地从水中收集，有利于水处理中污染物的去除过程。
This paper presents a facile strategy for designing magnetic adsorbents with versatile functions from nanomagnetic polyhedral oligomeric silsesquioxanes composite (Fe3O4@POSS), which can effectively adsorb and remove different environmental pollutants in aqueous solution. The obtained Fe3O4@POSS-SH possesses mesoporous architecture with a large specific surface area of 649.41 m2/g. Then a sulfonate-functionalized magnetic adsorbent (Fe3O4@POSS-SO3H) is derived through simple oxidization of the thiol moieties of Fe3O4@POSS-SH by H2O2. Fe3O4@POSS-SH or Fe3O4@POSS-SO3H can respectively serve as an effective detergent for the elimination of Cr(VI) with high adsorption capacity of 185.19 mg/g, or cationic dye pollutants (such as neutral red, methylene blue and acriflavine with high adsorption capacity of 185.19, 175.44 and 128.21 mg/g, respectively). Notably, both sulfur-loaded Fe3O4@POSS can be collected easily from water under a moderate magnetic field, facilitating the process of pollutants removal in water treatment.
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