薄壁中孔碳材料的精细控制合成

引用本文: 王羽, 隗罡, 蔡斌, 朱月香, 谢有畅. 薄壁中孔碳材料的精细控制合成[J]. 物理化学学报, 2011, 27(03): 729-735. doi: 10.3866/PKU.WHXB20110321 shu

Citation: WANG Yu, YU Gang, CAI Bin, ZHU Yue-Xiang, XIE You-Chang. Delicately Controlled Synthesis of Mesoporous Carbon Materials with Thin Pore Walls[J]. Acta Physico-Chimica Sinica, 2011, 27(03): 729-735. doi: 10.3866/PKU.WHXB20110321 shu

薄壁中孔碳材料的精细控制合成

基金项目:
国家自然科学基金(20773004) (20773004)

国家重点基础研究发展规划项目(973) (2011CB808702)资助 (973) (2011CB808702)

摘要:

利用γ-氧化铝为模板, 精细控制合成了一系列具有不同孔径的中孔碳材料. 在优化的条件下, 所得的碳材料具有孔径分布窄、比表面积高(>1000 m²·g^-1)、孔容大(最高3.82 cm³·g^-1)、中孔率高(>99%)的特点, 并且孔壁厚度仅有1-2个石墨层. 选用了三种不同来源的氧化铝为模板, 考察了模板与所得碳材料织构的相关性, 并提出用无序模板可控制备碳材料的机理. 即在碳包覆氧化铝的复合物前体中, 若碳层完整覆盖氧化铝表面并且足够强韧, 则所得碳材料可近似复制模板的孔结构, 并且碳材料的孔一部分由去除模板所生成, 另一部分来源于模板原有的孔. 据此模型对所得碳材料的孔容进行了理论计算, 其结果有力支持了上述机理.

关键词:

中孔碳
/ 薄壁
/ 可控合成
/ 无序模板
/ 机理
/ 氧化铝

English

Delicately Controlled Synthesis of Mesoporous Carbon Materials with Thin Pore Walls

1.
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
Received Date: 12 October 2010
Available Online: 03 March 2011
Fund Project:
国家自然科学基金(20773004)

国家重点基础研究发展规划项目(973) (2011CB808702)资助

Abstract:

Mesoporous carbon materials with a range of pore sizes were synthesized by a delicately controlled procedure using disordered γ-alumina as template and sucrose as carbon source. Under optimized conditions, the carbon materials had narrow pore size distribution, large surface area (>1000 m²·g^-1), large pore volume (up to 3.82 cm³·g^-1), high mesopore ratio (>99%), and thin pore walls with thickness of 1-2 graphene layers. In the present work, we employed three types of alumina, and investigated the correlation of their texture with that of the resultant carbon materials. A mechanism for the formation of the carbon materials was proposed and tested against experimental data. A carbon sample prepared by this method can approximately duplicate the pore structure of the template, if the carbon layer in the precursor carbon-covered alumina is complete and sufficiently robust. The mesopores of the carbons had two sources, one from the removal of the template particles and the other from the original pores of the template. Calculated pore volumes strongly support the proposed mechanism.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

薄壁中孔碳材料的精细控制合成

English

Delicately Controlled Synthesis of Mesoporous Carbon Materials with Thin Pore Walls

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

薄壁中孔碳材料的精细控制合成

English

Delicately Controlled Synthesis of Mesoporous Carbon Materials with Thin Pore Walls

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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