A high surface area superparamagnetic mesoporous spinel ferrite synthesized by a template-free approach and its adsorptive property
A high surface area superparamagnetic mesoporous spinel ferrite synthesized by a template-free approach and its adsorptive property
复制标题
无模板法合成高比表面积超顺磁性介孔尖晶石铁氧体及其吸附性能
DOI：
10.1016/j.micromeso.2010.02.019
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发表时间：
2010-07-01
影响因子：
5.2
通讯作者：
Shi, Jianlin
中科院分区：
文献类型：
--
作者：
Gao, Zhe;Cui, Fangming;Shi, Jianlin
以单相多组分前驱体为原料，在不使用任何造孔模板剂的条件下，通过草酸盐简单分解法合成了具有高比表面积（达301.6 m2 g-1）和良好孔径分布（2.5-16.2 nm）的磁性尖晶石NiFe_2 O_4。XRD、DSC-TG、SEM、EDS、TEM。采用VSM和N2吸附等温线技术对前体和所得复合材料进行表征。该介孔材料对酸性橙子7（AO 7）具有良好的吸附性能，可作为磁性分离吸附剂用于处理含AO 7的废水。吸附在吸附剂上的AO 7可以通过热分解容易地去除，合成的介孔NiFe 2 O 4可以容易地回收，保持吸附性能。(C)2010年爱思唯尔公司All rights reserved.
Magnetic mesoporous spinel NiFe2O4 of high surface area (up to 301.6 m(2) g(-1)) and well-defined pore size distribution maximized at 2.5-16.2 nm has been synthesized by a facile oxalate decomposition process from corresponding single-phase multi-component precursor without using any pore-generating template. XRD, DSC-TG, SEM, EDS, TEM. VSM and N-2 sorption isotherm techniques were employed to characterize the precursor and resulting composites. The mesoporous material showed good adsorptive property for acid orange 7 (AO7) and can be used as a magnetically separatable adsorbent to treat AO7 contained wastewater. AO7 adsorbed on the adsorbent can be facilely removed by thermal decomposition and the synthesized mesoporous NiFe2O4 can be easily recycled with maintained adsorption property. (C) 2010 Elsevier Inc. All rights reserved.