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Citation: Wang Zhongchun, Liu Ersheng, Chen Naisheng, Huang Jinling. Preparation of Sb-doped α-Fe₂O₃ Ultrafine Powder via Oxidation-coprecipitation[J]. Chinese Journal of Applied Chemistry, ;1997, 14(4): 80-82. shu

Preparation of Sb-doped α-Fe₂O₃ Ultrafine Powder via Oxidation-coprecipitation

1.
Department of Chemistry, Fuzhou University, Fuzhou 350002

Received Date: 5 October 1996
Available Online: 22 April 1997
Fund Project:

Ultrafine powder of T-Fe₂O₃ doped with antimony has been prepared by a novel oxidation-coprecipitation method. The products have been characterized by XRD, TEM, and their specific areas have been determined by front chromatography. The results showed that the powder prepared by this method has smaller mean particle size and larger specific area than that obtained by chemical coprecipitation.Ultrafine powder of T-Fe₂O₃ doped with Sn and Sb has also been prepared. The gas-sensitive ceramic units fabricated with powder prepared by the new method has been found to have much lower electrical resistance in air.
- T-Fe₂O₃ ceramic,
- Sb-doped gas-sensitive material,
- nanometer-sized material
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Preparation of Sb-doped α-Fe₂O₃ Ultrafine Powder via Oxidation-coprecipitation