| 郭蕊,崔立峰.K2CO3活化合成的甘蔗渣衍生多孔碳用于CO2吸附[J].有色金属材料与工程,2019,40(6):26-31. |
| K2CO3活化合成的甘蔗渣衍生多孔碳用于CO2吸附 |
| K2CO3 Activated Synthesizing Bagasse Derived Porous Carbons for CO2 Adsorption |
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| DOI：10.13258/j.cnki.nmme.2019.06.005 |
| 中文关键词: K2CO3活化 甘蔗渣 N掺杂 多孔碳 CO2吸附 |
| 英文关键词:K2CO3 activation bagasse N-doping porous carbon CO2 adsorption |
| 基金项目:上海市科委国际科技合作项目(17520710300)；国家自然科学基金资助项目（21103024） |
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| 中文摘要: |
| 环境中化石燃料的大量使用导致CO2浓度不断增加，这是全球变暖的主要原因。为了解决这一问题，开发一种高效廉价的吸附材料至关重要。以甘蔗渣为碳源，尿素为N源，通过碳化和K2CO3活化制备出N掺杂多孔碳。多孔碳的物理化学性质用N2解吸等温线、傅里叶红外光谱、元素分析、扫描电子显微镜观察和X射线衍射等方法进行表征。结果表明：该材料具有高度发达的孔隙、较高的N含量和较高的石墨化程度。当尿素与甘蔗渣混合比是2、碳化温度是800℃、K2CO3浸渍比是3时，多孔碳的比表面积高达2 486.67 m2·g-1，同时CO2吸附量高达250.73 mg·g-1。由此可见以廉价的甘蔗渣制备N掺杂的多孔碳用于吸附CO2具有广阔的应用前景。 |
| 英文摘要: |
| The increased of CO2 concentration caused by the large use of fossil fuels in the environment is the main cause of global warming. In order to solve the problem, it is very important to develop an efficient and cheap adsorption material. Using bagasse as carbon source and urea as N source, N-doped porous carbon was prepared by carbonization and K2CO3 activation. The physical and chemical properties of porous carbon were analyzed by nitrogen adsorption-desorption isotherms, Fourier infrared spectroscopy, elemental analysis, scanning electron microscopy and X-ray diffraction. The results show that the materials have highly developed pores, high content and high graphitization degree. When the mixture ratio of urea and bagasse is 2, the carbonization temperature is 800℃, and the K2CO3 impregnation ratio is 3, the specific surface area of porous carbon is as high as 2 486.667 m2·g-1, and the CO2 adsorption is up to 250.73 mg·g-1. It can be seen that the preparation of N-doped porous carbon from low-priced bagasse has a broad application prospect for CO2 adsorption. |
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