Exotemplating synthesis of nitrogen-doped carbon materials with hierarchically porous structure and their application for lysozyme adsorption

被引:14
作者
Shao, Gao-Song [1 ]
Liu, Lei [2 ]
Ma, Tian-Yi [2 ]
Yuan, Zhong-Yong [2 ]
机构
[1] Chinese Peoples Armed Police Forces Acad, Langfang 065000, Hebei, Peoples R China
[2] Nankai Univ, Coll Chem, Engn Res Ctr Energy Storage & Convers, Inst New Catalyt Mat Sci,Minist Educ, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
Hierarchical porosity; Exotemplating; Nitrogen-doping; Carbon; Vitamin B6; Lysozyme adsorption; MESOPOROUS MOLECULAR-SIEVES; SURFACE-CHEMISTRY; TEMPLATE SYNTHESIS; NANOPOROUS CARBON; ACTIVATED CARBONS; ALUMINUM INCORPORATION; CATALYTIC-ACTIVITY; HOLLOW SPHERES; PORE DIAMETER; CYTOCHROME-C;
D O I
10.1016/j.cej.2011.08.076
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Nitrogen-doped carbon materials with hierarchically porous structure were prepared by employing meso-/macroporous titania (MMT) as exotemplate with the use of Vitamin B6 (VB6) as both the carbon precursor and the nitrogen source for elemental doping. The synthesized materials were characterized by N(2) sorption, scanning electron microscopy, transmission electron microscopy. Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The obtained N-doped carbon materials have a multi-scaled porous hierarchy with pore sizes ranging from micropores, mesopores to macropores, and their morphology can be easily tuned through a simple adjustment of the weight ratio of VB6 to MMT. The different chemical state (pyridine-like N, quaternary N and oxidized N) and the content of nitrogen were analyzed by XPS. The prepared materials were used as the adsorbents for lysozyme. The effect of nitrogen doping on the lysozyme adsorption capability was investigated by comparison of the lysozyme adsorption behavior on the nitrogen-doped and nitrogen-free carbon materials with a similar pore structure. It was found that the nitrogen-containing carbon had higher adsorption capacity of lysozyme than that of the nitrogen-free carbons. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:452 / 460
页数:9
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