The Hydrogen Sensors Based on the Dandelion-like Nanostructured TiO2

The nanostructured rutile TiO
2
was synthesized by hydrothermal method and then it was further processed by the hydrothermal process with AgNO
3
to be the TiO
2
doped Ag nanomaterial (TiO
2
/Ag). SEM images showed that both the pure TiO
2
and the TiO
2
/Ag are the dandelion-like 3D nanostructures. The nanostructured TiO
2
and TiO
2
/Ag doped were prepared as the gas sensors and their responses to H
2
were tested. The results indicated that the sensor based on the Ag doped nanostructured TiO
2
has much higher sensitivity than that of the sensor on the pure nanostructured TiO
2
.