화학공학소재연구정보센터
학회 한국재료학회
학술대회 2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터)
권호 20권 1호
발표분야 B. 나노 재료(Nanomaterials)
제목 Ni2O3-decorated In2O3 nanostructures for highly sensitive methane detection
초록 Methane is a highly flammable gas that explodes in the air when reacting with other pollutants. The explosive limit of methane gas is 5%. However, detection of lower concentrations is necessary for prevention and warning purposes in a leaking system. We developed a simple method of fabricating thin films of granular indium oxide (In2O3) particles decorated with Ni2O3 nanoparticles for a high-response methane gas sensor. The In2O3 granular film was fabricated by sputter-deposition of indium followed by oxidation. Ni nanoparticles were deposited onto the In2O3 film by the arc-discharge deposition of single-wall carbon nanotubes followed by the burning out of these nanotubes. The catalyst Ni nanoparticles distributed in the single-wall carbon nanotubes were oxidized to Ni2O3. The sensors exhibited tens of % response per 100 ppm methane gas concentration.
저자 Nguyen Minh Vuong1, Nguyen Minh Hieu1, Hwanpyo Yi1, Dojin Kim1, Hyojin Kim1, Byung Il Choi2, Myungbae Kim2
소속 1Chungnam National Univ., 2Korea Inst. Machinery & Materials
키워드 Indium oxides; nickel oxide; nanowire; gas sensor.
E-Mail dojin@cnu.ac.kr