The Influences of Oxygen Concentration and External Heating on Carbon Nanotube Growth in Diffusion Flame

Tight control of the carbon nanotube (CNT) synthesis process in flames remains a challenge due to highly non-uniform gradient flame thermochemical properties. The present study aims establish baseline model for flame-enhanced chemical vapor deposition (FECVD) CNT and analyze growth region at varying furnace conditions. numerical comprises computational fluid dynamics (CFD) simulation that is coupled with rate simulate flow field within respectively. Validation shape, length, temperature profile are carried reasonable comparison experimental measurements. A parametric on effects heating capacity oxidizer concentration conducted. results reveal there positive correlation between heater power length. Supplying higher fixed predicted result further improvement length high yield region. Flame structure analysis showed turned 750 W (corresponding heat flux 21,713W/m2), expands twofold when oxygen increased from 19% 24%. However, shrinks 27% which indicates depletion source excess oxygen. finding this research could guide optimize experiment flame-assisted production future.