微型多孔材料
材料科学
竹子
扫描电子显微镜
微波食品加热
傅里叶变换红外光谱
活性炭
多孔性
体积热力学
微波加热
表面积体积比
碳纤维
化学工程
比表面积
复合材料
纳米技术
核化学
吸附
化学
有机化学
催化作用
复合数
工程类
物理
量子力学
作者
Hongying Xia,Jian Wu,C. Srinivasakannan,Jinhui Peng,Libo Zhang
出处
期刊:High Temperature Materials and Processes
日期:2015-08-05
卷期号:35 (6): 535-541
被引量:7
标识
DOI:10.1515/htmp-2014-0228
摘要
Abstract The present work attempts to convert bamboo into a high surface area activated carbon via microwave heating. Different chemical activating agents such as KOH, NaOH, K 2 CO 3 and Na 2 CO 3 were utilized to identify a most suitable activating agent. Among the activating agents tested KOH was found to generate carbon with the highest porosity and surface area. The effect of KOH/C ratio on the porous nature of the activated carbon has been assessed. An optimal KOH/C ratio of 4 was identified, beyond which the surface area as well as the pore volume were found to decrease. At the optimized KOH/C ratio the surface area and the pore volume were estimated to be 3,441 m 2 /g and 2.093 ml/g, respectively, with the significant proportion of which being microporous (62.3%). Activated carbon prepared under the optimum conditions was further characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). Activated carbons with so high surface area and pore volume are very rarely reported, which could be owed to the nature of the precursor and the optimal conditions of mixture ratio adopted in the present work.
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