Substrate-immobilized electrospun TiO2nanofibers for photocatalyticdegradation of pharmaceuticals: The effects of pH and dissolvedorganic matter characteristics
Cited 0 times inCited 0 times in
- Substrate-immobilized electrospun TiO2nanofibers for photocatalyticdegradation of pharmaceuticals: The effects of pH and dissolvedorganic matter characteristics
- Maeng, Sung Kyu; Cho, Kangwoo; Jeong, Boyoung; Lee, Jaesang; Lee, Yunho; Lee, Changha; Choi, Kyoung Jin; Hong, Seok Won
- Issue Date
- PERGAMON-ELSEVIER SCIENCE LTD
- WATER RESEARCH, v.86, pp.25 - 34
- A substrate-immobilized (SI) TiO2</inf> nanofiber (NF) photocatalyst for multiple uses was prepared through electrospinning and hot pressing. The rate of furfuryl alcohol degradation under UV irradiation was found to be the highest when the anatase to rutile ratio was 70:30; the rate did not linearly increase as a function of the NF film thickness, mainly due to diffusion limitation. Even after eight repeated cycles, it showed only a marginal reduction in the photocatalytic activity for the degradation of cimetidine. The effects of pH and different organic matter characteristics on the photodegradation of cimetidine (CMT), propranolol (PRP), and carbamazepine (CBZ) were investigated. The pH-dependence of the photocatalytic degradation rates of PRP was explained by electrostatic interactions between the selected compounds and the surface of TiO2</inf> NFs. The degradation rates of CMT showed the following order: deionized water>l-tyrosine>secondary wastewater effluent (effluent organic matter)>Suwannee River natural organic matter, demonstrating that the characteristics of the dissolved organic matter (DOM) can affect the photodegradation of CMT. Photodegradation of CBZ was affected by the presence of DOM, and no significant change was observed between different DOM characteristics. These findings suggest that the removal of CMT, PRP, and CBZ during photocatalytic oxidation using SI TiO2</inf> NFs is affected by the presence of DOM and/or pH, which should be importantly considered for practical applications. © 2015 Elsevier Ltd
- Appears in Collections:
- UEE_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.