负载磁性纳米粒子的介孔（有机）硅作为一种可重复使用的纳米吸附剂用于去除水样中的砷。
Mesoporous (organo) silica decorated with magnetic nanoparticles as a reusable nanoadsorbent for arsenic removal from water samples.
作者信息
Hasanzadeh Mohammad, Farajbakhsh Farzad, Shadjou Nasrin, Jouyban Abolghasem
机构信息
a Drug Applied Research Center and Faculty of Pharmacy , Tabriz University of Medical Sciences , Tabriz 51664 , Iran.
出版信息
Environ Technol. 2015 Jan-Feb;36(1-4):36-44. doi: 10.1080/09593330.2014.934744. Epub 2014 Jul 11.
Over the last decade, numerous removal methods using solid-supported magnetic nanocomposites have been employed in order to remove arsenic from aqueous solution. In this report, removal of arsenic from aqueous solution by an organo silica, namely, magnetic mobile crystalline material-41 (MCM-41) functionalized by chlorosulphonic acid (MMCM-41-SO3H), was investigated using atomic absorption spectroscopy. The synthesized magnetic mesoporous materials have satisfactory As (V) adsorption capacity. Linearity for arsenic was observed in the concentration range of 5-100 ppb. In addition, the coefficient of determination (R2) was more than 0.999 and the limit of detection (LOD) was 0.061 ppb. Considering these results, MMCM-41-SO3H has a great potential for the removal of As (V) contaminants and potentially for the application in large-scale wastewater treatment plants.
在过去十年中，为了从水溶液中去除砷，人们采用了许多使用固体负载磁性纳米复合材料的去除方法。在本报告中，使用原子吸收光谱法研究了一种有机硅，即经氯磺酸功能化的磁性移动晶体材料-41（MCM-41）（MMCM-41-SO3H）从水溶液中去除砷的情况。合成的磁性介孔材料具有令人满意的As（V）吸附能力。在5-100 ppb的浓度范围内观察到砷的线性关系。此外，测定系数（R2）大于0.999，检测限（LOD）为0.061 ppb。考虑到这些结果，MMCM-41-SO3H在去除As（V）污染物方面具有巨大潜力，并有可能应用于大型污水处理厂。
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