Nanosized perovskite oxide NdFeO<sub>3</sub> as material for a carbon-monoxide catalytic gas sensor
Ho, Truong Giang; Ha, Thai Duy; Pham, Quang Ngan; Giang, Hong Thai; Thu Do, Thi Anh; Nguyen, Ngoc Toan; Ho, Truong Giang; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam; Ha, Thai Duy; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam; Pham, Quang Ngan; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam; Giang, Hong Thai; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam; Thu Do, Thi Anh; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam; Nguyen, Ngoc Toan; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
Журнал:
Advances in Natural Sciences: Nanoscience and Nanotechnology
Дата:
2011-03-01
Аннотация:
In this paper, research on a CO catalytic gas sensor based on nano-crystalline perovskite oxide NdFeO<sub>3</sub> designed for exhaust gas measurement is presented. Nano-crystalline oxide NdFeO<sub>3</sub> was synthesized by a sol–gel citrate technique. The gas sensing characteristics of this sensor were investigated in the concentration range of CO between 0 and 5 vol.% in air. The influences of C<sub>3</sub>H<sub>8</sub>, C<sub>4</sub>H<sub>16</sub> gases, relative humidity and air-flow rate on the cross-sensitivity of the CO sensor were also studied.
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