CAJ | 학술논문

采用乙醇为燃料和碳源，改变取样时间、催化剂种类和基板材料，在扩散火焰中进行了合成碳纳米管的试验研究．对于制备出的碳纳米材料的微观形貌采用高分辨扫描电镜(HRSEM)、透射电镜(TEM)进行了表征．研究结果表明，取样时间较短(小于5,min)或过长(大于20,min)时，基板表面都无法生成碳纳米材料；催化剂的种类和浓度对合成碳纳米材料具有重要影响；含有多种催化活性金属元素的基板不利于合成均一碳纳米管；试验条件下合成碳纳米管的最优工艺条件是温度在650～750,℃，取样高度为20,mm，取样时间为10,min，基板材料和催化剂分别为铜和1.0,mol/L硝酸镍．
채용을순위연료화탄원，개변취양시간、최화제충류화기판재료，재확산화염중진행료합성탄납미관적시험연구．대우제비출적탄납미재료적미관형모채용고분변소묘전경(HRSEM)、투사전경(TEM)진행료표정．연구결과표명，취양시간교단(소우5,min)혹과장(대우20,min)시，기판표면도무법생성탄납미재료；최화제적충류화농도대합성탄납미재료구유중요영향；함유다충최화활성금속원소적기판불리우합성균일탄납미관；시험조건하합성탄납미관적최우공예조건시온도재650～750,℃，취양고도위20,mm，취양시간위10,min，기판재료화최화제분별위동화1.0,mol/L초산얼．
Carbon nanotubes(CNTS)were synthesized from diffusion flame using ethanol as the fuel and carbon source by changing sampling time,catalyst and substrate. The morphology of carbon nanomaterials was observed using high resolution scanning electron microscopy(HRSEM)and transmission electron microscopy(TEM). The ex-perimental results showed that CNTS cannot be formed on the substrate when the sampling time is too short(less than 5 min)or too long(more than 20 min). The catalyst type and catalyst concentration have an important influence on the synthesis of carbon nanomaterials. The substrates containing a variety of metal elements with catalytic activity are unfavorable for the synthesis of uniform CNTs. The optimum technological conditions of CNTs synthesis are that the flame temperature is within the range from 650,℃to 750,℃,the sampling height is 20 mm,the sampling time is 10 min,and Ni(NO3)2 coated on the copper substrate with the concentration of 1.0 mol/L is used as catalyst.