Synthesis and dye separation performance of ferromagnetic hierarchical porous carbon

Synthesis and dye separation performance of ferromagnetic hierarchical porous carbon
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铁磁性分级多孔碳的合成及染料分离性能

DOI:
10.1016/j.carbon.2008.06.052
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发表时间:
2008-10
期刊:
影响因子:
10.9
通讯作者:
--
中科院分区:
材料科学2区
文献类型:
--
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合成了镍颗粒嵌套在层状多孔碳骨架中的铁磁性层状多孔碳(FHPC)。通过溶解na2co3盐模板形成分级大介孔骨架,通过原位碳热还原法制备铁磁性镍颗粒。FHPC的饱和磁化强度为11.3emug−1,剩余磁化强度为2.3emug−1,矫顽力为55.7Oe。铁磁性能使FHPC与水进行磁分离。FHPC的表面化学环境由不同的氧官能团组成,如-OH、>COO和>CO基团,以及微量的脂肪族- ch3或[公式:见文]结构。用亚甲基橙考察了FHPC的染料分离性能,吸附量为0.16mgm−2,吸附动力学常数为2.2m2mg−1min−1,优于磁性碳球。
Ferromagnetic hierarchical porous carbon (FHPC) with nickel particles embedded in the hierarchical porous carbon skeleton was synthesized. The hierarchical macro–mesoporous skeleton was formed by dissolving a salt template of Na2CO3and the ferromagnetic nickel particles were produced by in situ carbothermal reduction of nickel oxide. The saturation magnetization, remnant magnetization and coercive force of FHPC are 11.3emug−1, 2.3emug−1and 55.7Oe. The ferromagnetic property enables the magnetic separation of the FHPC from water. The surface chemical environments of the FHPC consist of different oxygen functional groups, like –OH, >COO and >CO groups, as well as a trace amount of aliphatic species of –CH3or [Formula: see text] structures. Dye separation performance of the FHPC was investigated using methylene orange, and the adsorption capacity was 0.16mgm−2with the adsorption kinetics constant of 2.2m2mg−1min−1, which is superior to that of magnetic carbon spheres.
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