Preparation of Fe-dispersed porous carbons from iron alum/carboxymethylcellulose gels and their application to volatile organic compound adsorption
Preparation of Fe-dispersed porous carbons from iron alum/carboxymethylcellulose gels and their application to volatile organic compound adsorption
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DOI：
10.1007/s10853-022-07578-x
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发表时间：
2022-08
影响因子：
4.5
通讯作者：
N. Miyajima;Kazuo Hara;H. Sakane;Kazusada Suzaki
中科院分区：
文献类型：
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作者：
N. Miyajima;Kazuo Hara;H. Sakane;Kazusada Suzaki
研究了铁明矾与羧甲基纤维素钠（CMC-Na）凝胶化制备多孔碳的方法。通过改变铁明矾与CMC-Na的质量比，制备了具有不同孔结构的多孔碳。在凝胶的碳化过程中，副产物na2co3起到活化剂的作用，在700℃以上的温度下通过分解促进孔隙的形成。高铁含量的CMC-Na干凝胶碳化后，在多孔碳中形成α-铁（铁（cI2））纳米晶体。由于碳表现出典型的铁磁性，它们可以用钕磁铁在水中收集。与商业活性炭相比，含有其他钠化合物的多孔碳提高了对挥发性有机化合物（VOC）的采用，显示出良好的VOC去除能力。其发达的孔隙有利于挥发性有机化合物吸附在碳上。图形抽象
The simple preparation of porous carbons with highly-dispersed metal particles and no additional activation by gelating iron alum and carboxymethylcellulose sodium (CMC-Na) was investigated. Various porous carbons with different pore structures were prepared by varying the mass ratio of iron alum to CMC-Na. In carbonizing the gels, Na2CO3by-product acted as an activator and promoted pores formation by decomposing over 700 °C. Carbonization of the CMC-Na xerogels with more Fe content resulted in the formation of α-iron (iron(cI2)) nanocrystals in porous carbons. Because the carbons exhibited typical ferromagnetic behavior, they could be collected by a neodymium magnet in water. The porous carbons which include other sodium compounds that improved adoption for volatile organic compound (VOC) demonstrated good VOC removal abilities compared to a commercial activated carbon. Their developed pores would facilitate accessing of VOC adsorbates to the carbon.Graphical abstract