CAJ | 학술논문

以SBA-15介孔硅为模板,硼酸为扩孔剂,调控合成出不同孔径尺寸的半石墨化有序介孔炭.采用X射线衍射仪(XRD)、氮气吸附、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、热重(TG),以及拉曼(Raman)光谱等手段对样品的成分、结构和形貌进行了分析.结果表明:通过合成过程添加硼酸的方法可以实现对介孔炭材料的孔径在3nm～7nm范围内精确调控,而且合成的介孔炭材料具有半石墨化的墙壁结构.该方法简单易行,对介孔炭材料的孔结构调控合成具有很好的应用价值.
이SBA-15개공규위모판,붕산위확공제,조공합성출불동공경척촌적반석묵화유서개공탄.채용X사선연사의(XRD)、담기흡부、투사전자현미경(TEM)、소묘전자현미경(SEM)、열중(TG),이급랍만(Raman)광보등수단대양품적성분、결구화형모진행료분석.결과표명:통과합성과정첨가붕산적방법가이실현대개공탄재료적공경재3nm～7nm범위내정학조공,이차합성적개공탄재료구유반석묵화적장벽결구.해방법간단역행,대개공탄재료적공결구조공합성구유흔호적응용개치.
Ordered mesoporous carbons (OMCs) with adjustable pores were synthesized by using an ordered mesoporous silica, SBA-15 as a hard template and boric acid as a pore expanding agent. The prepared samples were characterized by X-ray diffraction, N2 porosimetry, thermogravimetry, transmission and scanning electron microscopy, and Raman spectroscopy. Results show that the pore size of the prepared samples can be finely tuned in the range of 3-7nm by using boric acid as the pore expanding agent. The OMCs possess extensive graphitic domains as evidenced by the well-resolved powder X-ray diffraction peaks, Raman spectra, transmission electron microscope images and thermogravimetric curves. This approach gives a simple method that can be widely used in the controlled synthesis of mesoporous carbons.