CAJ | 학술논문

采用纳米涂层技术,以介孔分子筛SBA-15为模板,在其纳米孔道内引入糠醇/草酸溶液,经原位聚合,炭化后制得炭/SBA-15复合物.采用化学法脱除模板后制得具有规则结构的中孔炭.高分辨TEM表征结果显示该中孔炭是由纳米炭管相互联接、堆积而成,且具有六方对称结构.氮吸附结果显示其比表面积高达2 000 m2/g,孔径呈双峰分布.孔径相对较大的孔隙来源于SBA-15孔道经纳米涂层后所保留的孔隙;孔径相对较小的孔隙来源于SiO2移除后遗留的纳米孔空间.该方法可应用于以其他多孔氧化硅为模板制备新型纳米复合物的研究过程.
채용납미도층기술,이개공분자사SBA-15위모판,재기납미공도내인입강순/초산용액,경원위취합,탄화후제득탄/SBA-15복합물.채용화학법탈제모판후제득구유규칙결구적중공탄.고분변TEM표정결과현시해중공탄시유납미탄관상호련접、퇴적이성,차구유륙방대칭결구.담흡부결과현시기비표면적고체2 000 m2/g,공경정쌍봉분포.공경상대교대적공극래원우SBA-15공도경납미도층후소보류적공극;공경상대교소적공극래원우SiO2이제후유류적납미공공간.해방법가응용우이기타다공양화규위모판제비신형납미복합물적연구과정.
Ordered mesoporous carbon (OMC) with a bimodal pore system and high surface area has been synthesized by using SBA-15 as template and furfuryl alcohol as carbon source. The mesoporous surface area of the resultant OMC is as high as 2 000 m2/g. The pore size distribution shows a clear bimodal type. One mode of porosity with relatively small pore size originated from the void space created after removal of the silica matrix, and another with a relatively large pore size was generated from the center spaces inside of the hollow carbon tubes. Compared to the previous report, the advantages of the current synthesis strategy are that it involves one fewer step and that the amount of carbon precursor realized is determined simply by changing the concentration of the furfuryl alcohol solution. The current method is generally applicable to porous silica for thin layer coating with carbon, establishing access to valuable materials for the synthesis of new nanocomposites.