Preparation and Characterization of Monolithic Iron Oxide Aerogels

Abstract

Abstract: Material synthesis involved addition of aqueous sodium hydroxide to an iron chloride solutionfol owed by thermal dialysis, vacuum dehydration, and supercritical drying.XRD, Mo ssbauer, TEM, BET, DT Astudies of The aerogel samples indicat ed that initially obt ained aerogels were FeOOH, which would be completely converted into monolit hiciron oxide aerogels t hrough heating treat ment at 450.Monolithiciron oxide aerogels were with uniform size and low density, porous materials consisted of nearly spherical, nanometer ult ram icrous Fe₂O₃with diametersabout 60 nm.By adjusting molarratio of sodium hydroxide and ferric chloride(OH^-/Fe³⁺), Thepore structure and specific surface area of The aerogel samples can be controlled.

Key words: Aerogels, Iron oxide, Preparation, Characterization

CLC Number:

O648.1

TrendMD:

GAN LI Hua, LI Guang-Ming, YUE Tian-Yi, CHEN Long-Wu, SHEN Jun, ZHOU Bin, WANG Jue . Preparation and Characterization of Monolithic Iron Oxide Aerogels[J]. Chem. J. Chinese Universities, 1999, 20(1): 132.

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Preparation and Characterization of Monolithic Iron Oxide Aerogels

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