Author(s)

Dewen He, Yutang Xiao, Dingmin Liang, Huannian Zhou, Lu Du, Lei Liu

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In this study, a three-dimensional ordered macroporous hematite was prepared using the polystyrene colloid crystal templates and characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, and nitrogen adsorption isotherm. The as-prepared hematite shows a porous structure consisting of the macropores about 200 nm in diameter and the walls about 20 nm in thickness. The adsorption of Pb²⁺ and Cd²⁺ ions in aqueous solution by this hematite was also evaluated. At room temperature, each gram hematite adsorbs 12.5 mg of Pb²⁺ ions and 7.0 mg of Cd²⁺ ions. The results suggest that the obtained hematite should be a promising adsorbent to remove Pb²⁺ and Cd²⁺ ions, and other heavy metal ions from aqueous solution.

Macroporous; Heavy Metal Ions; Adsorption; Pollution

He, D. , Xiao, Y. , Liang, D. , Zhou, H. , Du, L. and Liu, L. (2011) Characterization and Application of Adsorption Material with Hematite and Polystyrene. Materials Sciences and Applications, 2, 215-219. doi: 10.4236/msa.2011.24027.