Synthesis of hollow porous carbon nanospheres from coal tar for adsorption of Direct Black 38 dye

Synthesis of hollow porous carbon nanospheres from coal tar for adsorption of Direct Black 38 dye
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以煤焦油为原料合成中空多孔碳纳米球用于吸附直接黑38染料

DOI:
10.1007/s10934-017-0369-2
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发表时间:
2017-01
影响因子:
2.6
通讯作者:
He Xiaojun
He Xiaojun
中科院分区:
材料科学4区
文献类型:
--
作者:
Zhang Chen;Zhang Weihao;Yu Moxin;Ning Kemeng;Zhang Li;Wang Xiaoting;He Xiaojun

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以煤焦油为原料,醋酸锌为模板,KOH活化,制备了适合吸附直接黑38(DB 38)的中空多孔碳纳米球(HPCNs)材料。所合成的HPCN具有纳米球结构,同时含有微孔和大量的介孔。当煤焦油/醋酸锌/KOH的质量比为1:4:2时,制备的HPCN 1 - 4 - 2比表面积为1374 m2 g-1,平均孔径为7.41 nm。HPCN 1 −4− 2对DB 38染料具有良好的吸附性能,DB 38染料在室温下具有较大的分子尺寸。这主要是由于其大的表面积和由其中孔贡献的孔体积。本工作为以廉价煤焦油为原料合成高性能大分子染料吸附剂提供了一条有效途径。
A hollow porous carbon nanospheres (HPCNs) material which suits for adsorption of Direct Black 38 (DB38) was prepared from coal tar using zinc acetate as a template coupled with KOH activation. The synthesized HPCNs features with nanospheres structure and contains both micropores and a lot of mesopores. The HPCN1−4−2made with the mass weight ratio of coal tar/zinc acetate/KOH at 1:4:2 shows a large surface area of 1374 m2g−1with an average pore size of 7.41 nm. The HPCN1−4−2exhibits excellent adsorption capacity for DB38 dye, which has big molecular size at room temperature. This is mainly due to its large surface area and pore volumes contributed by its mesopores. This work suggests an effective way to synthesize a high performance adsorbent for large molecular size dyes from low-cost coal tar.
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