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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >A facile co-gelation route to synthesize FeCo/carbon nanocomposites and their application as magnetically separable adsorber
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A facile co-gelation route to synthesize FeCo/carbon nanocomposites and their application as magnetically separable adsorber

机译：合成FeCo /碳纳米复合材料的简便共凝胶途径及其在磁分离吸附剂中的应用

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摘要

A new kind of magnetic porous FeCo/carbon nanocomposites was successfully synthesized by using a facile co-gelation sol-gel route. The sol-gel process of this route started from an ethanol solution containing teraethylorthosilicate (TEOS), furfuryl alcohol (FA), and metal nitrates. With the evaporation of solvent, the weak acidity produced from hydrolysis of metal nitrates simultaneously catalyzed the polymerization of FA and the hydrolysis of TEOS, which led to the inorganic/organic hybrid xerogel, accompanying metal salts spontaneously captured in the xerogel. The composites obtained have high surface areas, pore volumes and strong magnetic strengths, which make them exhibit excellent performance of adsorption for bulk dyes and easily separated from solution by external field after adsorption. Compared to the previous methods, this route is very simple and operable for the preparation of magnetic porous carbon composites. Such facile co-gelation route also provides a common path to the synthiesis of nanoscale metal or alloy embedded in the porous carbon materials.
机译：利用一种简便的共凝胶溶胶-凝胶法成功地合成了一种新型的磁性多孔FeCo /碳纳米复合材料。该路线的溶胶-凝胶过程始于含有原硅酸四乙酯（TEOS），糠醇（FA）和金属硝酸盐的乙醇溶液。随着溶剂的蒸发，金属硝酸盐水解产生的弱酸性同时催化了FA的聚合和TEOS的水解，从而导致了无机/有机杂化干凝胶，伴随着金属盐自发地被吸收在干凝胶中。所得的复合材料具有高的表面积，孔体积和强的磁性强度，这使得它们显示出对块状染料的优异吸附性能，并且在吸附后容易通过外场与溶液分离。与以前的方法相比，该方法非常简单，可用于制备磁性多孔碳复合材料。这种容易的共凝胶化途径也为合成嵌入多孔碳材料中的纳米级金属或合金提供了一条通用途径。

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