| 학회 |
한국화학공학회 |
| 학술대회 |
2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 |
16권 2호, p.2033 |
| 발표분야 |
재료 |
| 제목 |
Synthesis of cobalt and nickel nanoparticles in supercritical methanol |
| 초록 |
Cobalt nanoparticles with an fccstructure and nickel nanoparticles with fcc and hcp structureswere synthesized by the reduction of Co(NO3)2 and Ni(NO3)2 in supercritical methanol. The reduction ofCo2+ and Ni2+ toCo and Niwas completed within 15 min at 400 °C and 300 bar. The reduction mechanism was investigated by varying the reaction temperature (200400 °C) and the reaction time (0.515 min). The results suggested that cobalt methoxynitrate formed at an initial stage was converted to CoO, and then reduced to Co. In addition, an introduction of oleic acid as a stabilizer achieved the formation of Co nanoparticles (∼10 nm). In the case of Ni, The reduction of Ni2+ to Ni showed similar mechanism to the formation of Co, It wasalso observed thatstarting materials (Ni(OH)2 and Ni(CH3COO)2)) affected the crystalline structure of Ni. |
| 저자 |
이영호1, 안기호1, Aye Aye Myint1, 이윤우1, 박하영2, 김경중2
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| 소속 |
1서울대, 2넥스트바이오(주) |
| 키워드 |
cobalt; nanoparticle; supercritical methanol
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| E-Mail |
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| 원문파일 |
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