용액연소법으로 제조한 LaFeO3의 XPS 특성

황연; 강대식; 박미혜; 조성백; Yeon-Hwan; Dae-Sik Kang; Mihye Park; Sung-Baek Cho

Korean Journal of Materials Research, Vol.18, No.6, 313-317, June, 2008

DOI10.3740/MRSK.2008.18.6.313 Export Citation

용액연소법으로 제조한 LaFeO3의 XPS 특성

X-ray Photoelectron Spectroscopy Study of LaFeO3 Powders Synthesized by Solution Combustion

황연^†, 강대식, 박미혜, 조성백¹

서울산업대학교 신소재공학과
¹한국지질자원연구원 자원활용소재연구부

Yeon-Hwan^†, Dae-Sik Kang, Mihye Park, and Sung-Baek Cho¹

Department of Materials Science & Engineering, Eco-Product & Materials Education Center, Seoul National University of Technology, Seoul 139-743, Korea
¹Minerals & Materials Processing Division, Korea Institute of Geoscience & Mineral Resources, Daejeon 305-350, Korea

E-mail:

LaFeO3 powders were synthesized using a method involving solution combustion, and the surface properties of these powders were examined by x-ray photoelectron spectroscopy. As the amount of fuel increased during the synthesis, the LaFeO3 powders became amorphous with a large plate-like shape. It was found that the O 1s spectra were composed of two types of photoelectrons by deconvolutioning the spectra. Photoelectrons with higher binding energy come from adsorbed oxygen (O.) whereas those with lower energy come from lattice oxygen (O2.). The ratio of adsorbed and lattice oxygen increased as the ratio of the fuel and nitrate (Φ) increased. The binding energy of both types of oxygen increased as Φ increased due to the formation of carbonates.

Keywords:X-ray photoelectron spectroscopy;LaFeO3;solution combustion synthesis;adsorbed oxygen

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[2] Arakawa T, Kurachi H, Shiokawa J, J. Mater. Sci., 20, 1207 (1985)

[3] Zhang H, Teraoka Y, Yamazoe N, Chem. Lett., 14, 665 (1985)

[4] Russo N, Fino D, Saracco G, Specchia V, J. Catal., 229(2), 459 (2005)

[5] Zhang-Steenwinkel Y, van der Zande LM, Castricum HL, Bliek A, van den Brink RW, Elzinga GD, Chem. Eng. Sci., 60(3), 797 (2005)

[6] Sadakane M, Asanuma T, Kubo J, Ueda W, Chem. Mater, 17, 3546 (2005)

[7] Fino D, Fino P, Saracco G, Specchia V, Chem. Eng. Sci., 58(3-6), 951 (2003)

[8] Hasan MA, Zaki MI, Kumari K, Pasupulety L, Thermochimica Acta, 320, 26 (1998)

[9] Deshpande K, Mukasyan A, Varma A, Chem. Mater., 16, 4896 (2004)

[10] Specchia S, Civera A, Saracco G, Chem. Eng. Sci., 59(22-23), 5091 (2004)

[11] Kang DS, Lee TK, Hwang Y, Bae KH, Cho SB, Korean J. Mater. Res., 17(7), 382 (2007)

[12] Barr TL, J. Phy. Chem., 82, 1801 (1978)

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[18] Ciambelli P, Cimino S, De Rossi S, Faticanti M, Lisi L, Minelli G, Pettiti I, Porta P, Russo G, Turco M, Appl. Catal. B: Environ., 24(3-4), 243 (2000)

[19] Seyama T, Catal. Rev. Sci. Eng., 34, 281 (1992)

[20] Yamazoe N, Teraoka Y, Seiyama T, Chem. Lett., 10, 1767 (1981)

[21] Fino D, Russo N, Saracco G, Speechia V, J. Catal., 217(2), 367 (2003)

[22] Ponce S, Pena MA, Fierro JLG, Appl. Catal. B: Environ., 24(3-4), 193 (2000)