Study on the Catalysis and Properties of the Carbon Nanotubes

• Main Authors: Hsiao-Chieh Sung, 宋曉潔
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/94469112049462890563

碩士 === 國立雲林科技大學 === 電子與資訊工程研究所 === 93 === Experiment this oxidize with high temperature boiler tube grow different SiO2 of thickness as carbon nanotubes in charge of buffer layer that grow, and Thermal Evaporator deposit metal catalyst including the iron, cobalt , nickel of 5nm thickness The membrane is on SiO2/Si base ( zero , 32nm , 54nm , 66nm), research that it influences it with the material of the metal catalyst membrane that the catalyst is distributed density and grain size and will receive SiO2 thickness, It is all different that SiO2 of different thickness will make the metal catalyst adhere to ability . There is better adhering to ability on the base plate without SiO2 to use the iron catalyst, it is relatively good that the cobalt increases it and adheres to ability with SiO2 thickness, it is being relatively bad that the nickel is having no SiO2 to adhere to ability when buffer layer. Observe the metal catalyst / the cross section of SiO2/ Si base plate with AFM, HRTEM and EDS. In addition, shake CNT deal with sulfuric acid and nitric acid mix solution, with HRTEM and TGA analysis, find(1) sulfuric acid and nitric acid different from proportion of will cause CNT structure to change, CNT will have influence of shortened only under nitric acid solution in the simplicity; But the time to react must be extended. And join sulfuric acid as the auxiliary function. (2)CNT deals with time in the same proportion sulfuric acid and nitric acid, CNT structure destroys shortened is more obvious as the time to deal with increases. (3)CNT the more thinner to the diameter, the easier to be destroyed its structure.