Fe/Ti co-pillared clay for enhanced arsenite removal and photo oxidation under UV irradiation

Fe/Ti co-pillared clay for enhanced arsenite removal and photo oxidation under UV irradiation
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Fe/Ti 共柱粘土可在紫外线照射下增强亚砷酸盐去除和光氧化

DOI:
10.1016/j.apsusc.2014.10.111
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发表时间:
2015
影响因子:
6.7
通讯作者:
Ping Na
Ping Na
中科院分区:
材料科学1区
文献类型:
--
作者:
Xiaojiao Cai;Jingwei Guo;Shimin Zhou;Ping Na

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通过在蒙脱土(MMT)中加入不同铁含量的钛,水解制备了一系列铁钛共柱蒙脱土(Fe-Ti/MMT)。通过x射线荧光、n2吸附和解吸、x射线衍射、扫描电镜(SEM)和透射电镜(TEM)对Fe- ti /MMT进行了表征,证实了Fe和tio2在MMT中的有效插入。用Fe-Ti/MMT在不同条件下去除水溶液中的亚砷酸盐(As(III))。紫外照射下对As(III)的吸附结果表明,在MMT中加入Fe和Ti可以增强其光活性。傅里叶变换红外光谱(FTIR)和x射线光电子能谱(XPS)分析表明,与金属氧化物(M-OH)键合的羟基对As(III)的吸附起重要作用。
A series of iron and titanium co-pillared montmorillonites (Fe-Ti/MMT) were prepared using hydrolysis of inserted titanium and different iron content in montmorillonite (MMT). The Fe-Ti/MMT were characterized by X-ray fluorescence, N2adsorption and desorption, X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), confirming the effective insertion of Fe species and TiO2in the MMT. The Fe-Ti/MMT was used to remove arsenite (As(III)) from aqueous solutions under different conditions. The result of As(III) adsorption under UV irradiation showed that the photo activity can be enhanced by incorporating Fe and Ti in MMT. Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis indicated that the hydroxyl groups bonded to metal oxide (M–OH) played an important role in the adsorption of As(III)
一种合成具有增强光活性的光催化TiO2/蒙脱土纳米复合材料的简便方法
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