Adhikari Prashanta Dhoj, Kim Sunghwan, Lee Sui, Park Chong-Yun
BK21 Physics Research Division, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
J Nanosci Nanotechnol. 2013 Jul;13(7):4587-92. doi: 10.1166/jnn.2013.7114.
Multi-walled carbon nanotubes (MWCNTs) were grown using iron oxide nanoclusters (Nc) assisted by self-assembled monolayer (SAM) on substrate. The amine-terminated SAM fabricated on silicon substrate (APTMS/SI) was carried out by UV-treatment and immersed into the FeCI3/HCI aqueous solution. Then, Nc were immobilized onto oxidized SAM silicon substrate (SAMs/Si) through electrostatic interaction between cationic Nc and anionic SAMs/Si. The characterization results clearly show that the well-graphitized MWCNTs were synthesized by using functionalized silicon substrate (Nc/SAMs/Si) as a template having appropriate density of catalyst. These consequences show that SAM containing template is important to achieve the effective layer of catalyst to synthesize MWCNTs in chemical vapor deposition (CVD).
多壁碳纳米管（MWCNTs）是在衬底上通过自组装单层（SAM）辅助的氧化铁纳米团簇（Nc）生长而成。在硅衬底上制备的胺基终止的SAM（APTMS/Si）通过紫外线处理并浸入FeCI3/HCI水溶液中。然后，通过阳离子Nc与阴离子SAMs/Si之间的静电相互作用，将Nc固定在氧化的SAM硅衬底（SAMs/Si）上。表征结果清楚地表明，通过使用具有适当催化剂密度的功能化硅衬底（Nc/SAMs/Si）作为模板，合成了高度石墨化的MWCNTs。这些结果表明，含SAM的模板对于在化学气相沉积（CVD）中获得有效催化剂层以合成MWCNTs很重要。
