Synthesis of highly graphitic mesoporous carbon using Ni-Fe double-layered hydroxide as both template and catalyst precursor
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摘要: 在相对较低的温度下，以蔗糖为碳源，Ni-Fe (Ni/Fe=2)双层氢氧化物作为催化剂前驱体和模板，通过固相法制备石墨化介孔炭。通过X射线衍射仪(XRD)、透射电子显微镜(TEM)和拉曼光谱法(Raman)对产物的结构和形貌进行表征。结果显示该材料具有较高的石墨化程度。氮气吸附和孔径分布显示制备出的石墨化炭的孔径分布均匀；同时，对石墨化炭的形成过程进行了分析。
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关键词:
- 双层氢氧化物 /
- 介孔炭 /
- 高度石墨化 /
- 固相法 /
- 催化剂基金项目 /
- 国家自然科学基金重点项目( 21031001) /
- 中央高校基本科研业务费专项资金(21609203).
Abstract: A graphitic mesoporous carbon was prepared using sucrose as carbon precursor and Ni-Fe (Ni/Fe=2) double-layered hydroxide (DLH) as template and catalyst precursor by a solid-phase method. The material was characterized by X-ray diffraction, Raman spectroscopy and high-resolution transmission electron microscopy. Results indicated that the graphitic mesoporous carbon has a uniform mesopore size and a high degree of graphitization. The mesoporous structure of the carbon is generated by templating from the mesoporous DLH. The catalytic metallic Ni was formed by reduction of Ni ions in the pore walls of the DLH with carbon during carbonization, and this caused graphitized carbon to be formed at a quite low temperature of 900℃.-
Key words:
- Layered double hydroxides /
- Mesoporous carbon /
- High graphitization /
- Solid-phase method /
- Catalyst /
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