Mesoporous Alumina Microfibers In Situ Transformation from AACH Fibers and the Adsorption Performance

Abstract EN

Well-dispersed mesoporous γ-alumina microfibers with high surface were prepared by thermal decomposition of the ammonium aluminum carbonate hydroxide (AACH) precursors.

The as-synthesized alumina retained the morphology of its precursor and exhibited memory effect.

The structural, morphological, porous, and adsorptive properties of the samples were investigated by XRD, FTIR, TGA-DSC, SEM, TEM, and UV-vis spectroscopy.

The prepared γ-alumina microfibers exhibited excellent ability to remove organic pollutants from waste water because of their mesoporous structures.

The γ-alumina in situ converted from AACH synthesized without surfactant exhibited adsorption ability for Congo red as good as that synthesized with PEG2000 and better than PEG20000 that provided a facile method without surfactant to synthesize γ-alumina with excellent adsorption performance.