Shape-controlled multi-porous carbon with hierarchical micro-meso-macro pores synthesized by flash heating of wood biomass
Shape-controlled multi-porous carbon with hierarchical micro-meso-macro pores synthesized by flash heating of wood biomass
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DOI：
10.1016/j.carbon.2008.02.014
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发表时间：
2008-05-01
期刊：
影响因子：
10.9
通讯作者：
Imamura, Y.
中科院分区：
文献类型：
--
作者：
Kurosaki, F.;Koyanaka, H.;Imamura, Y.
我们开发了一种简单的形状可控多孔炭材料的合成方法，该材料结合了80%以上的高孔隙率和670m(2)/g的高Brunauer-Emmett-Teller表面积。该合成包括对锯末进行闪速加热和随后的低温热处理(380℃)。闪光加热使木屑的形貌转变为特定的非晶态碳的三维微结构，随后的热处理显著增加了形状可控多孔炭材料的比表面积。产物由含有表面微孔(孔径2 nm)和中孔(孔径5 nm；50 nm)的交联型碳束组成。此外，在交联碳束之间还发现了大孔(5微米和微米；孔径和微米；50微米)。(C)2008爱思唯尔有限公司。保留所有权利。
We developed a simple synthesis of shape-controlled porous carbon materials that combine a high porosity of over 80% with a high Brunauer-Emmett-Teller surface area of 670 m(2)/g. The synthesis involves flash heating of sawdust and subsequent low-temperature heat treatment (380 degrees C). Flash heating changed the morphology of the sawdust to the specific three-dimensional microtexture of amorphous carbon, and the subsequent heat treatment dramatically increased the surface area of the shape-controlled porous carbon materials. The products consisted of cross-linked carbon beams containing surface micro-pores (pore size < 2 nm) and meso-pores (5 nm < pore size < 50 nm). Moreover, macro-pores (5 mu m < pore size < 50 mu m) were found between the cross-linked carbon beams. (C) 2008 Elsevier Ltd. All rights reserved.