Three-Dimensional Periodic Hematite Photocatalysts Fabricating by Direct Writing Method

Abstract:

Three-dimensional (3-D) periodic hematite scaffold was successfully fabricated by direct writing method as a catalyst for degradation of organic contaminants. Photo-catalytically active α-Fe₂O₃ nanoparticles have been synthesized by sol-gel technique. Aqueous slurries of iron oxides were freeform fabricated to produce hematite scaffolds with a 3-D periodic architecture and multiscale porosity. The catalytic activity of the hematite scaffolds was evaluated in the degradation of Methylene Blue (MB). It was found that the degradation rate of MB dye was over 83%. The result strongly indicates that the hematite scaffolds exhibits a high catalytic activity. Moreover, this work provides an important step forward in the creation of suitable structures for photocatalyst.

• Periodical: Advanced Materials Research (Volumes 1025-1026)
• Pages: 621-627
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.621
• Online since: September 2014
• Authors: Qin Mei Peng, Bo Li*, Jin Wang, Ji Jiao Li, Ji Zhou
• Keywords: Direct Writing, Hematite, Photocatalysis, Recovery

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