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Acta Chimica Sinica ›› 2006, Vol. 64 ›› Issue (21): 2173-2177. Previous Articles Next Articles
Original Articles
傅小明*, 钟云波, 任忠鸣, 邓康, 徐匡迪
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FU Xiao-Ming*; ZHONG Yun-Bo; REN Zhong-Ming; DENG Kang; XU Kuang-Di
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Iron oxide hydroxide prepared by low-temperature neutralization reaction in zero and low magnetic field was analyzed with XRD and SEM. The experimental results turned out that spherical and acicular goethite (α-FeOOH) was prepared in zero magnetic field. Spindly lepidocrocite (γ-FeOOH) was prepared in 0.1 T magnetic field. And its grain size distribution was not homogeneous. Sub-micron spherical Fe1.833(OH)0.5O0.25 was prepared in 0.3 T magnetic field. Sub-micron spherical misawite (δ-FeOOH) of about 100 nm, the crystalline state of which was amorphous, was prepared in 0.5 T magnetic field. Fe1.833(OH)0.5O0.25 was an intermediate product from goethite (α-FeOOH) prepared in zero magnetic field to misawite (δ-FeOOH) prepared in low magnetic field. And the grain size distribution of sub-micron spherical Fe1.833(OH)0.5O0.25 and spherical misawite (δ-FeOOH) was homogeneous. Besides, the crystallinity of iron oxide hydroxide (FeOOH) was influenced by low magnetic field greatly.
Key words: low magnetic field, low-temperature neutralization method, sub-micron, amorphous δ-FeOOH
FU Xiao-Ming*; ZHONG Yun-Bo; REN Zhong-Ming; DENG Kang; XU Kuang-Di. Preparation of Sub-micron Amorphous δ-FeOOH by Low-temperature Neutralization Method in Low Magnetic Field[J]. Acta Chimica Sinica, 2006, 64(21): 2173-2177.
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