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Open AccessArticle

Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass

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Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 1–7 Polizu, 011061 Bucharest, Romania
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Department of Metallic Materials Processing and Eco-Metallurgy, University Politehnica of Bucharest, 313 Spl. Independentei, 060042 Bucharest, Romania
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Author to whom correspondence should be addressed.
Water 2020, 12(1), 176; https://doi.org/10.3390/w12010176
Received: 15 November 2019 / Revised: 3 January 2020 / Accepted: 6 January 2020 / Published: 8 January 2020
New photocatalytic membranes based on polylactic acid (PLA)/TiO2 hybrid nanofibers deposited on fiberglass supports were prepared and tested for the removal of ampicillin from aqueous solutions. The electrospinning technique was used to obtain hybrid nanofibers that were deposited on three types of fiberglass with different structures, resulting in three distinct photocatalytic membranes namely fiberglass fabric plain woven-type membrane, fiberglass mat-type membrane, and fiberglass fabric one-fold edge-type membrane. The results of the photocatalytic tests showed that the highest efficiency of ampicillin removal from aqueous solution is obtained with the fiberglass fabric plain woven-type membrane. Although it has been shown that the rate of photocatalytic degradation of ampicillin is high, being practically eliminated within the first 30 min of photocatalysis, the degree of mineralization of the aqueous solution is low even after two hours of photocatalysis due to the degradation of PLA from the photocatalytic membrane. The instability of PLA in the reactive environment of the photocatalytic reactor, evidenced by morphological, mineralogical and spectroscopic analyzes as well as by kinetic studies, is closely related to the structure of the fiberglass membrane used as a support for PLA/TiO2 hybrid nanofibers. View Full-Text
Keywords: photocatalysis; fiberglass; polylactic acid; anatase; electrospining; hybrid nanofibers; ampicillin photocatalysis; fiberglass; polylactic acid; anatase; electrospining; hybrid nanofibers; ampicillin
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Bobirică, C.; Bobirică, L.; Râpă, M.; Matei, E.; Predescu, A.M.; Orbeci, C. Photocatalytic Degradation of Ampicillin Using PLA/TiO2 Hybrid Nanofibers Coated on Different Types of Fiberglass. Water 2020, 12, 176.

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