Facile route to α-FeOOH and α-Fe2O3 nanorods and magnetic property of α-Fe2O3 nanorods

被引:249
作者
Tang, B [1 ]
Wang, GL [1 ]
Zhuo, LH [1 ]
Ge, JC [1 ]
Cui, LJ [1 ]
机构
[1] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China
关键词
D O I
10.1021/ic060097b
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
alpha-FeOOH nanorods with diameters of 15-25 nm and lengths up to 170-300 nm were synthesized in high yield via a facile and template-free hydrothermal method at low temperature. After calcining the as-synthesized alpha-FeOOH at 250 degrees C for 2 h, we could obtain alpha-Fe2O3 nanorods. Interestingly, the as-obtained alpha-Fe2O3 nanorods exhibited weakly ferromagnetic characteristics at low temperature and superparamagnetic property at room temperature, which is different from the behavior of the corresponding bulk material.
引用
收藏
页码:5196 / 5200
页数:5
相关论文
共 36 条
[1]  
Alivisatos AP, 1998, ADV MATER, V10, P1297
[2]   MORIN TEMPERATURE OF ANNEALED SUBMICRONIC ALPHA-F2O3 PARTICLES [J].
AMIN, N ;
ARAJS, S .
PHYSICAL REVIEW B, 1987, 35 (10) :4810-4811
[3]  
AMIN N, 1985, PHYS STATUS SOLIDI A, V104, pK65
[4]  
Bean C. P., 1959, J APPL PHYS, V30, pS120, DOI [DOI 10.1063/1.2185850, 10.1063/1.2185850]
[5]   Size dependence of the properties of hematite nanoparticles [J].
Bodker, F ;
Morup, S .
EUROPHYSICS LETTERS, 2000, 52 (02) :217-223
[6]   Magnetic properties of hematite nanoparticles [J].
Bodker, F ;
Hansen, MF ;
Koch, CB ;
Lefmann, K ;
Morup, S .
PHYSICAL REVIEW B, 2000, 61 (10) :6826-6838
[7]   Chemistry and properties of nanocrystals of different shapes [J].
Burda, C ;
Chen, XB ;
Narayanan, R ;
El-Sayed, MA .
CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102
[8]   Single-crystal dendritic micro-pines of magnetic α-Fe2O3:: Large-scale synthesis, formation mechanism, and properties [J].
Cao, MH ;
Liu, TF ;
Gao, S ;
Sun, GB ;
Wu, XL ;
Hu, CW ;
Wang, ZL .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (27) :4197-4201
[9]   α-Fe2O3 nanotubes in gas sensor and lithium-ion battery applications [J].
Chen, J ;
Xu, LN ;
Li, WY ;
Gou, XL .
ADVANCED MATERIALS, 2005, 17 (05) :582-+
[10]   Single-source approach to cubic FeS2 crystallites and their optical and electrochemical properties [J].
Chen, XY ;
Wang, ZH ;
Wang, X ;
Wan, JX ;
Liu, JW ;
Qian, YT .
INORGANIC CHEMISTRY, 2005, 44 (04) :951-954