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Choi, Kyoung Jin
Energy Conversion Materials (EcoMAT) Lab
Research Interests
  • Solar cells, thermoelectrics, piezoelectric

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Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds

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Title
Titanium dioxide nanofibers integrated stainless steel filter for photocatalytic degradation of pharmaceutical compounds
Author
Ramasundaram, SubramaniyanYoo, Ha NaSong, Kyung GuenLee, JaesangChoi, Kyoung JinHong, Seok Won
Keywords
Organic micro-pollutants; Pharmaceutical compounds; Photo catalytic degradation; Photocatalytic filter; Photocatalytic oxidations; Poly (vinylidene fluoride)(PVDF); Poly(vinylidene fluoride); TiO
Issue Date
201308
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF HAZARDOUS MATERIALS, v.258-259, no., pp.124 - 132
Abstract
A photocatalytically active stainless steel filter (P-SSF) was prepared by integrating electrospun TiO2 nanofibers on SSF surface through a hot-press process where a poly(vinylidene fluoride) (PVDF) nanofibers interlayer acted as a binder. By quantifying the photocatalytic oxidation of cimetidine under ultraviolet radiation and assessing the stability of TiO2 nanofibers integrated on the P-SSF against sonication, the optimum thickness of the TiO2 and PVDF layer was found to be 29 and 42μm, respectively. At 10L/m2h flux, 40-90% of cimetidine was oxidized when the thickness of TiO2 layer increased from 10 to 29μm; however, no further increase of cimetidine oxidation was observed as its thickness increased to 84μm, maybe due to limited light penetration. At flux conditions of 10, 20, and 50L/m2h, the oxidation efficiencies for cimetidine were found to be 89, 64, and 47%, respectively. This was attributed to reduced contact time of cimetidine within the TiO2 layer. Further, the degradation efficacy of cimetidine was stably maintained for 72h at a flux of 10L/m2h and a trans-filter pressure of 0.1-0.2kPa. Overall, our results showed that it can potentially be employed in the treatment of effluents containing organic micropollutants.
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DOI
http://dx.doi.org/10.1016/j.jhazmat.2013.04.047
ISSN
0304-3894
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