Synthesis of magnetically separable ordered mesoporous carbons from F127/[Ni(H2O)6](NO3)2/resorcinol-formaldehyde composites

被引：71

作者：

Yao, Jingyuan ^{[1
]}

Li, Lixia ^{[1
]}

Song, Huaihe ^{[1
]}

Liu, Changyi ^{[1
]}

Chen, Xiaohong ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

CARBON | 2009年 / 47卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PORE CONNECTIVITY; SILICA; NANOPARTICLES; FRAMEWORKS; GRAPHITIZATION; HYDROGENATION; TEMPERATURE; PERFORMANCE; FABRICATION; POLYMERS;

D O I：

10.1016/j.carbon.2008.10.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An easy method is described for the synthesis of a mesostructured Ni/ordered mesoporous carbon (OMC) composite with a highly ordered cubic structure (space group Im3m). This synthesis was carried out by the carbonization of the F127/[Ni(H2O)(6)](NO3)(2)/RF (resorcinol-formaldehyde) composite self-assembled in an alkaline medium. The effects of nickel loading content and carbonization temperature on the morphologies, pore features, structures and magnetic properties of these Ni/OMC composites were investigated using the thermogravimetric analysis, X-ray diffraction, nitrogen sorption, transmission electron microscopy and vibrating-sample magnetometer measurements. It was found that Ni2+ was captured by the network of F127/RF and further reduced into metallic Ni nanoparticles during the carbonization. The nickel nanoparticles were well-dispersed in the ordered mesoporous carbon walls. The Ni/OMC composites exhibit the soft ferromagnetic behavior and the magnetization parameters can be adjusted by the content of nickel and the carbonization temperatures. The excellent acid-resistant property of the magnetic materials makes them useful in magnetic separation. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：436 / 444

页数：9

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