催化剂对乳液模板法制备碳材料形貌的影响

引用本文: 甘礼华, 刘明贤, 陈龙武, 胡军, 刘洪来. 催化剂对乳液模板法制备碳材料形貌的影响[J]. 物理化学学报, 2010, 26(10): 2666-2671. doi: 10.3866/PKU.WHXB20100933 shu

Citation: GAN Li-Hua, LIU Ming-Xian, CHEN Long-Wu, HU Jun, LIU Hong-Lai. Effect of Catalysts on the Morphologies of Carbon Materials Synthesized by an Emulsion Templating Method[J]. Acta Physico-Chimica Sinica, 2010, 26(10): 2666-2671. doi: 10.3866/PKU.WHXB20100933 shu

催化剂对乳液模板法制备碳材料形貌的影响

基金项目:
国家自然科学基金(20973127, 20776045, 20736002) (20973127, 20776045, 20736002)

上海市科委纳米专项基金(0952nm00800) (0952nm00800)

国家高技术研究发展计划(863)项目(2008AA062302) (863)项目(2008AA062302)

中国博士后科学基金(20090460647) (20090460647)

上海市博士后科研资助计划(10R21412100)资助 (10R21412100)

摘要:

以液体石蜡为油相, 间苯二酚和甲醛的水溶液为水相, 吐温80 和司班80 为乳化剂, 获得油/水(O/W) 型乳状液. 将该乳状液聚合、碳化去除模板后制得了碳材料, 研究了不同催化剂对所得碳材料形貌的影响. 结果表明: 选择NaOH 为催化剂时, 制得的碳材料是一种具有孔壁和孔洞的多孔碳泡沫, 典型样品的孔径约为1-2 μm; 当氨水为催化剂时, 所得碳材料是由微球或者相互缠绕的蠕虫状粒子组成的块体材料, 这些微球或粒子的直径主要集中在1-2 μm, 与NaOH 为催化剂时所得碳泡沫的孔径尺寸相当. 研究发现, 氨水的加入使得乳液体系发生了相转化, 由原来的O/W 型乳液逐渐转变为W/O 型高内相乳液. 从分子间氢键出发, 应用内聚能理论探讨了催化剂导致的乳液相变以及不同形貌碳材料的形成过程.

关键词:

乳状液
/ 催化剂
/ 碳材料
/ 形貌
/ 相变
/ 氢键

English

Effect of Catalysts on the Morphologies of Carbon Materials Synthesized by an Emulsion Templating Method

1.
1. Department of Chemistry, Tongji University, Shanghai 200092, P. R. China;
2. Key Laboratory for Advanced Materials, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China
Received Date: 28 April 2010
Available Online: 27 September 2010
Fund Project:
国家自然科学基金(20973127, 20776045, 20736002)

上海市科委纳米专项基金(0952nm00800)

国家高技术研究发展计划(863)项目(2008AA062302)

中国博士后科学基金(20090460647)

上海市博士后科研资助计划(10R21412100)资助

Abstract:

An oil in water (O/W) emulsion with a resorcinol and formaldehyde (R+F) water solution as the external phase and liquid paraffin as the internal phase together with Span 80/Tween 80 as emulsifiers was obtained. Carbon materials were prepared by polymerization of the emulsion, followed by carbonization for template removal. The effect of catalysts on the morphologies of the carbon materials was investigated. The results indicate that the resultant representative carbons area type of porous carbon foam and possess pore walls and pores of 1-2 μm in size when NaOH is used as a catalyst. However, monolithic carbon materials consisting of microspheres or intertwinded wormlike particles were prepared using ammonia as an alternative catalyst. The diameters of these microspheres or particles were mainly around 1-2 μm and these dimensions are similar to the pore sizes of the carbon foams. We find that ammonia causes the initial O/W emulsion system to experience a phase inversion towarda W/O high internal phase emulsion.A mechanism involving intermolecular H-bond interactions and cohesive energy theory is proposed to explain the catalyst-induced phase inversion phenomenon as well as the formation of carbon materials with different morphologies.

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

催化剂对乳液模板法制备碳材料形貌的影响

English

Effect of Catalysts on the Morphologies of Carbon Materials Synthesized by an Emulsion Templating Method

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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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

催化剂对乳液模板法制备碳材料形貌的影响

English

Effect of Catalysts on the Morphologies of Carbon Materials Synthesized by an Emulsion Templating Method

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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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs