No abstract

No abstract

No abstract

Bi 2 O 3 -decorated In 2 O 3 nanorods were synthesized using a one-step process, and their structure, as well as the effects of decoration of In 2 O 3 nanorods with Bi 2 O 3 on the ethanol gassensing properties were examined. The multiple networked Bi 2 O 3decorated In 2 O 3 nanorod sensor showed responses of 171−1774% at ethanol concentrations of 10−200 ppm at 200 °C. The responses of the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor were stronger than those of the pristine-In 2 O 3 nanorod sensors by 1.5− 4.9 times at the corresponding concentrations. The two sensors exhibited short response times and long recovery times. The optimal Bi concentration in the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor and the optimal operation temperature of the sensor were 20% and 200 °C, respectively. The Bi 2 O 3 -decorated In 2 O 3 nanorod sensor showed selectivity for ethanol gas over other gases. The origin of the enhanced response, sensing speed, and selectivity for ethanol gas of the Bi 2 O 3 -decorated In 2 O 3 nanorod sensor to ethanol gas is discussed.

No abstract