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. 2012 Mar 7;12(3):3302–3313. doi: 10.3390/s120303302

Table 1.

The research situation of TiO2 nanotubes sensor.

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%