화학적 공침법을 이용한 침상형 페라이트 합성

임윤희; 조영민; Jiao-Wen Shen; Yun-Hui Lim; Young-Min Jo

Applied Chemistry for Engineering, Vol.22, No.2, 185-189, April, 2011

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화학적 공침법을 이용한 침상형 페라이트 합성

Preparation and Characterization of Nanocrystalline Spinel Ferrites by Chemical Co-precipitation

, 임윤희, 조영민^†

경희대학교 환경응용과학과 환경연구센터

Jiao-Wen Shen, Yun-Hui Lim, and Young-Min Jo^†

Department of Applied Environment Science, Center for Environment Studies, Kyung Hee University, Gyeonggi-do 446-701, Korea

E-mail:

초록

본 연구에서는 화학적 공침법을 적용하여 가스상 이산화탄소 분해를 위한 나노크기의-페라이트(M=Co, Ni, Cu, Zn)를 제조하였다. 열중량 분석 결과, 시험제조한 모든 시료의 최고 무게 감소율은 350 ℃ 미만에서 발생하였다. 소성온도가 증가할수록 결정형은 우수하여 표면촉매활성화를 기대할 수 있지만, 입자결정의 크기가 크고, 비표면적이 낮은 페라이트가 합성됨을 알 수 있었다. FT-IR 분석으로부터 375∼406 cm^(-1)의 범위에서 octahedral site에 착화물이 존재함을 확인 할 수 있었으며, 이는 페라이트 내 스피넬 구조가 형성되어 있음을 보여주는 것이라고 믿는다. 본 연구로부터 얻은 이산화탄소 분해반응을 위한 금속페라이트의 최적 열처리 온도는 500 ℃인 것으로 나타났다.

In this work, nano-sized M-ferrites (M=Co, Ni, Cu, Zn) for the decomposition of carbon dioxide were synthesized by the chemical co-precipitation. From the thermogravimetric analysis, it was clear that the maximum weight loss of each sample took place below 350 ℃. High temperature calcination resulted in more systematic crystallines, smaller specific surface area and larger particle size. An analysis by FTIR in the range of 375∼406 cm^(-1) revealed the presence of chelates at the octahedral site, which implies the formation of spinel structure in the ferrites. The current work showed that a 500 ℃ is the optimum heat treatment temperature of metal ferrites for CO2 decomposition reaction.

Keywords:carbon dioxide;decomposition;co-precipitation;oxygen deficient ferrite;spinel structure

[References]

Liu C, Zou BS, Rondinone AJ, Zhang ZJ, J. Phys. Chem. B, 104(6), 1141 (2000)
Donald GM, MR imaging contrast agents, 1 (1997)
Tamaura Y, Tahata M, Nature., 346, 255 (1990)
Kodama T, Tabata M, Tominaga K, Yoshida T, Tamaura Y, J. Mater. Sci., 28, 547 (1993)
Kato H, Kodama T, Tsuji M, Tamaura Y, Chang SG, J. Mater. Sci., 29(21), 5689 (1994)
Khedr MH, Farghali AA, Appl. Catal. B: Environ., 61(3-4), 219 (2005)
Khedr MH, Omar AA, Abdel-Moaty SA, Mater. Sci. Eng. A., 432, 26 (2006)
Khedr MH, Bahgat M, Nasr MI, Sedeek EK, Colloids Surf. A-Physicochem. Eng. Aspects., 302, 517 (2007)
Khedr MH, Halim KSA, Zaki AH, J. Anal. Appl. Pyrol., 81, 272 (2008)
Wulfsberg G, Inorganic Chemistry: University Science Books (2000)
Ma LJ, Chen LS, Chen SY, J. Phys. Chem. Solids., 68, 1330 (2007)
Zhang CL, Li S, Wang LJ, Wu TH, Peng SY, Mater. Chem. Phys., 62(1), 44 (2000)
Khedr MH, Omar AA, Abdel-Moaty SA, Colloids Surf. A-Physicochem. Eng. Aspects., 281, 8 (2006)
Nedkov I, Merodiiska T, Slavov L, Vandenberghe RE, Kusano Y, Takada J, J. Magn. Magn. Mater., 300, 358 (2006)
Tang B, Yuan LJ, Shi TH, Yu LF, Zhu YC, J. Hazard. Mater., 163(2-3), 1173 (2009)
Lv WZ, Liu B, Luo ZK, Ren XZ, Zhang PX, J. Alloys Comp., 465, 261 (2008)
Jitianu A, Meghea A, Rau I, Zaharescu M, J. Mater. Chem., 12, 1401 (2002)
Priyadharsini P, Pradeep A, Rao PS, Chandrasekaran G, J. Mater. Chem., 116, 207 (2009)

[Referenced By]

[1] Liu C, Zou BS, Rondinone AJ, Zhang ZJ, J. Phys. Chem. B, 104(6), 1141 (2000)

[2] Donald GM, MR imaging contrast agents, 1 (1997)

[3] Tamaura Y, Tahata M, Nature., 346, 255 (1990)

[4] Kodama T, Tabata M, Tominaga K, Yoshida T, Tamaura Y, J. Mater. Sci., 28, 547 (1993)

[5] Kato H, Kodama T, Tsuji M, Tamaura Y, Chang SG, J. Mater. Sci., 29(21), 5689 (1994)

[6] Khedr MH, Farghali AA, Appl. Catal. B: Environ., 61(3-4), 219 (2005)

[7] Khedr MH, Omar AA, Abdel-Moaty SA, Mater. Sci. Eng. A., 432, 26 (2006)

[8] Khedr MH, Bahgat M, Nasr MI, Sedeek EK, Colloids Surf. A-Physicochem. Eng. Aspects., 302, 517 (2007)

[9] Khedr MH, Halim KSA, Zaki AH, J. Anal. Appl. Pyrol., 81, 272 (2008)

[10] Wulfsberg G, Inorganic Chemistry: University Science Books (2000)

[11] Ma LJ, Chen LS, Chen SY, J. Phys. Chem. Solids., 68, 1330 (2007)

[12] Zhang CL, Li S, Wang LJ, Wu TH, Peng SY, Mater. Chem. Phys., 62(1), 44 (2000)

[13] Khedr MH, Omar AA, Abdel-Moaty SA, Colloids Surf. A-Physicochem. Eng. Aspects., 281, 8 (2006)

[14] Nedkov I, Merodiiska T, Slavov L, Vandenberghe RE, Kusano Y, Takada J, J. Magn. Magn. Mater., 300, 358 (2006)

[15] Tang B, Yuan LJ, Shi TH, Yu LF, Zhu YC, J. Hazard. Mater., 163(2-3), 1173 (2009)

[16] Lv WZ, Liu B, Luo ZK, Ren XZ, Zhang PX, J. Alloys Comp., 465, 261 (2008)

[17] Jitianu A, Meghea A, Rau I, Zaharescu M, J. Mater. Chem., 12, 1401 (2002)

[18] Priyadharsini P, Pradeep A, Rao PS, Chandrasekaran G, J. Mater. Chem., 116, 207 (2009)