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Citation: Gan Li-Hua, Yue Tian-Yi, Chen Long-Wu, Li Guang-Ming, Zhou Bin. Preparation and Characterization of β-FeOOH Aerogels[J]. Acta Physico-Chimica Sinica, ;1997, 13(01): 48-51. doi: 10.3866/PKU.WHXB19970109 shu

Preparation and Characterization of β-FeOOH Aerogels

1.
Department of Chemistry,Department of Physics,Tongji University,Shanghai 200092

Received Date: 12 August 1996
Available Online: 15 January 1997

Monolithic β- FeOOH aerogels which consist of rodlike particles with lengths of about 18nm and diameters of about 5nm were prepared from aqueous ferric chloride and sodium hydroxide. Material synthesis involved preparation of iron polymer aquogel followed by supercritical drying. The effects of the molar ratio of OH- /Fe3+ on the density and the specific surface area of the aerogel samples were studied. The aerogel samples were characterized with BET, TEM, XRD and Mossbauer techniques. The results show that the aerogel samples were coherent nanosized porous monolithic solids which consist of β-FeOOH ultrafine particles. By increasing the molar ratio of OH- / Fe3+. the final density of the aerogels increased with a concomitant decrease specific surface area.
- β-FeOOH,
- Aerogel,
- Preparation,
- Characterization,
- Molar ratio of OH^-/Fe³⁺
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