P1.4.14 Hydrogen sensing properties of doped and undoped TiO2 nanotubes
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P1.4 Nanostructured Sensors
- E. Sennik, M. Isik, N. Kilinc, Z. Öztürk - Gebze Institute of Technology, Science Faculty (Turkey)
- 1022 - 1024
In this work, we fabricated undoped and doped TiO2 nanotubes for investigating H2 sensor properties of these structures. Ti foil was anodized in an aqueous HF electrolyte (0.5 wt %) to form TiO2 nanotube arrays. Carbon doped TiO2 nanotubes were fabricated by anodization of Ti foil using %0.5 polyvinylalcohol (PVA) in an aqueous HF electrolyte (0.5 wt %). For both doped and undoped TiO2 nanotubes anodization was performed at a constant potential of 20V and at constant temperature of 20 ºC. The two structures were characterized using scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS), and determined the H2 sensing properties at 100 ºC.