The synthesis of hierarchical porous iron oxide with wood templates

Synthesis of hierarchical iron oxide with controllable porous structure by wood templates is presented in this paper. These wood-templated iron oxides (Fe2O3) with special hierarchical pore size from 20 nm up to 50 mu m were prepared with inorganic precursor solution in four kinds of wood templates. Different characterization techniques such as SEM, FESEM, field emission topography SEM, EDAX, XRD, TEM and N-2 adsorption were used to investigate the structures of iron oxide in different length scales. We demonstrate that the structures of the iron oxide synthesized here are hierarchical porous derived from their wood templates. Moreover, the pore size distribution of wood-templated iron oxide shows dependence on the calcination temperature and wood template. (c) 2005 Elsevier Inc. All rights reserved.