Novel ruptured Sm2O3–In2O3 porous nanotubes with excellent formaldehyde sensing properties

Ruptured Sm2O3–In2O3 nanotubes with pores on surface have been successfully synthesized via a single-capillary electrospinning process. The cracks and pores distributed on the nanotube surfaces which can be seen in SEM images facilitate gas transport in materials and increase effective contact areas between gas molecules and materials. Gas sensors based on Sm2O3–In2O3 have been fabricated and investigated for formaldehyde detection. The response to 100ppm formaldehyde at the optimum operating temperature of 240∘C is 66.82.