Preparation of Manganese Oxide Porous Nanostructures using Amino-acid and its Selective C3H8Sensing Properties
아미노산을 이용한 망간 산화물 기공성 나노 구조의 합성 및 C3H8가스에 대한 선택적 감응 특성

Kwon-Il Choi, Jong-Heun Lee
2011 Journal of Sensor Science and Technology  
Porous manganese oxide porous nanostructures were prepared by amino-acid-mediated solvothermal self assembly reaction and subsequent heat treatment at 600 C. When Mn-precursors were heat-treated at 400 -550 C, the sensors did not show significant gas responses. In contrast, the manganese oxide heat-treated at 600 C showed the significant gas responses, that is, the resistance decrease to 100 ppm C 3 H 8 (R a /R g = 2.17, R a : resistance in air, R g : resistance in gas) and the resistance
more » ... he resistance increase to 100 ppm C 2 H 5 OH (R g /R a = 1.92). The opposite change of resistance upon exposure to C 3 H 8 and C 2 H 5 OH was discussed in relation to the mixed phases of manganese oxides with different valences.
doi:10.5369/jsst.2011.20.1.64 fatcat:cqpfeyhir5fsbawbg67dltw3je