Development of Self-Assembled 3D FexOy Micro/Nano Materials for Application in Hexachlorobenzene Degradation
Abstract:Self-assembled three dimensional (3D) hierarchical, flower-like iron oxide micro/nano materials, including pure Fe3O4, α-Fe2O3/Fe3O4 composite and pure α-Fe2O3, were developed to degrade hexachlorobenzene (HCB) at 300 °C. It was found that pure Fe3O4 exhibited the highest activity with the reaction rate constant at 0.959 min−1. Identified degradation products with lower chlorinated benzenes suggest a stepwise hydrodechlorination was occurring for the degradation of HCB on the synthesized Fe3O4. The characterization of the synthesized iron oxides after reaction indicates the Fe3O4 phase was partially transformed into α-Fe2O3 phase and in return accelerated progress of hydrodechlorination of HCB. The superior performance of as-prepared Fe3O4 could be attributed to its structural feature such as surface area and pore structure, as well as its phase transformation during HCB degradation.
Document Type: Research Article
Publication date: 2011-03-01
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