Table 1.
Available Literature | Nanotube Type | Nanotube diameter | Gas sensor | Sensitivity |
---|---|---|---|---|
Seo, M.-H., et al. [10] | TiO2 individual nanotubes | 70 nm | Toluene (50 ppm) | 25% |
Lin, S., et al. [11] | TiO2 nanotube arrays | 150 nm | Formaldehyde (50 ppm) | 35% |
Yun, H. [12] | TiO2 individual nanotubes | 20 nm | NO2 (12.5 ppm) | 67% |
TiO2 nanotube arrays | 100 nm | NO2 (2.5 ppm) | 130% | |
Varghese, O.K., et al. [13] | TiO2 nanotube arrays | 46 nm 76 nm |
H2 (1,000 ppm) | 1,000% 90% |