The Photocatalytic Properties of Fe³⁺ and N Co-Doped TiO₂ Micro/Nanofiber Film for Dye Waste Water Decomposition

Abstract:

To obtain a TiO₂ photocatalyst with high photocatalytic efficiency under visible irradiation and good reusability, the Fe³⁺ and N co-doped TiO₂ micro/nano fiber films were fabricated by electrospinning and calcinations. The morphologies and structures of the resulting samples were analyzed by scanning electron microscopy (SEM), x-ray diffraction and x-ray energy dispersion spectroscopy (EDS). The absorbance and chemical oxygen demand (COD) were characterized respectively by UV–visible spectrophotometer and COD Rapid Tester. The results show that the Fe³⁺ and N co-doped TiO₂ micro/nano fiber had a multi-porous structure with an average diameter of about 45 to 506 nm. The crystalinity degrees, visible light absorption of these films were affected by the dosage of Fe³⁺ and N co-doping (DFN). Moreover, these films exhibited high photocatalytic activity for the degradation of dye waste water under sunlight and it was related to DFN. As DFN was 0.5 %, it has highest crystalinity degree, largest visible light absorption and highest photocatalytic efficiency on dye waste water. The decolor rate of the dye waste water was as high as 67.6 % and its COD decreased from 2800±200 to 236.40 ± 15.61, when the photocatalytic time was only 3 h.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 853-856
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.853
• Online since: October 2011
• Authors: Qiao Zhen Yu, Xiang Jun Jin, Shao Yang Li, Lei Wang, Kun Long Liang
• Keywords: Dye Wastewater, Fe³⁺, Nano Fiber Film, N-Co-Doped TiO₂, Photocatalytic Properties

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