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초록
Porous manganese oxide porous nanostructures were prepared by amino-acid-mediated solvothermal self assembly reaction and subsequent heat treatment at 600℃. When Mn-precursors were heat-treated at 400 - 550℃, the sensors did not show significant gas responses. In contrast, the manganese oxide heat-treated at 600℃ showed the significant gas responses, that is, the resistance decrease to 100 ppm C_3H_8 (R_a/R_g = 2.17, R_a : resistance in air, R_g : resistance in gas) and the resistance increase to 100 ppm C_2H_5OH (R_g/R_a = 1.92). The opposite change of resistance upon exposure to C_3H_8 and C_2H_5OH was discussed in relation to the mixed phases of manganese oxides with different valences.
키워드
Manganese oxide; C_3H_8; Selectivity; Gas sensors
- 제목
- 아미노산을 이용한 망간 산화물 기공성 나노 구조의 합성 및 C_3H_8 가스에 대한 선택적 감응 특성
- 제목 (타언어)
- Preparation of Manganese Oxide Porous Nanostructures using Amino-acid and its Selective C_3H_8 Sensing Properties
- 저자
- 최권일; 이종흔
- 발행일
- 2011
- 저널명
- 센서학회지
- 권
- 20
- 호
- 1
- 페이지
- 64 ~ 69