β-FeOOH气凝胶的制备及表征

doi:10.3866/PKU.WHXB19970109

Abstract

Abstract:

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.

Key words: β-FeOOH, Aerogel, Preparation, Characterization, Molar ratio of OH^-/Fe³⁺

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

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Preparation and Characterization of β-FeOOH Aerogels

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