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Article

Enhanced Photo-Catalytic Performance of Activated Carbon Fibers for Water Treatment

1
Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas (CERTH), 6th km Charilaou-Thermi Road, Thermi, 57001 Thessaloniki, Greece
2
Department of Physics, University of Ioannina, 45110 Ioannina, Greece
*
Author to whom correspondence should be addressed.
Received: 28 July 2019 / Revised: 27 August 2019 / Accepted: 28 August 2019 / Published: 29 August 2019
(This article belongs to the Special Issue Wastewater Engineering and Environmental Catalysis)
The synthesis, characterization, and performance of composite photocatalytic adsorbents are investigated in this work using the dip-coating and the electrophoretic coating methods for the deposition of titanium dioxide (TiO2) on porous activated carbon fiber (ACF) substrates. The adsorption and photocatalytic efficiency of the synthesized catalytic adsorbents were compared using phenol as the model pollutant. Both immobilization techniques resulted in composite ACF/TiO2 adsorbents characterized by large surface area (844.67 ± 45.58 m2 g−1), uniform distribution of TiO2 nanoparticles on the activated carbon fibers, and high phenol adsorption. The method and the treatment time affected the phenol adsorption, while the highest sorption was determined in the case of the ACF/TiO2 sample prepared by the electrophoretic coating method (at 20 V) for an electrolysis time of 120 s (7.93 mgphenol g−1ACF/TiO2). The UV-A irradiation of most ACF/TiO2 samples led to a faster removal of phenol from water as a result of the combined sorption and heterogeneous photocatalysis. The stability and the effective regeneration of the most promising composite photocatalytic adsorbent was proved by multiple filtration and UV-A irradiation cycles. View Full-Text
Keywords: activated carbon fiber; titanium dioxide; electrophoresis; dip-coating; photocatalysis; adsorption; phenol activated carbon fiber; titanium dioxide; electrophoresis; dip-coating; photocatalysis; adsorption; phenol
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MDPI and ACS Style

Plakas, K.V.; Taxintari, A.; Karabelas, A.J. Enhanced Photo-Catalytic Performance of Activated Carbon Fibers for Water Treatment. Water 2019, 11, 1794. https://0-doi-org.brum.beds.ac.uk/10.3390/w11091794

AMA Style

Plakas KV, Taxintari A, Karabelas AJ. Enhanced Photo-Catalytic Performance of Activated Carbon Fibers for Water Treatment. Water. 2019; 11(9):1794. https://0-doi-org.brum.beds.ac.uk/10.3390/w11091794

Chicago/Turabian Style

Plakas, Konstantinos V., Athina Taxintari, and Anastasios J. Karabelas 2019. "Enhanced Photo-Catalytic Performance of Activated Carbon Fibers for Water Treatment" Water 11, no. 9: 1794. https://0-doi-org.brum.beds.ac.uk/10.3390/w11091794

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