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Construction of TiO/AgPO nanojunctions on carbon fiber cloth for photocatalytically removing various organic pollutants in static or flowing wastewater.

08:00 EDT 13th March 2020 | BioPortfolio

Summary of "Construction of TiO/AgPO nanojunctions on carbon fiber cloth for photocatalytically removing various organic pollutants in static or flowing wastewater."

Plenty of power-shaped semiconductor nanomaterials have been used to photocatalytically degrade various pollutant wastewater in beakers, but they are difficult to be applied in the practical wastewater that is flowing in river or pipeline. Thus, the key to photocatalytically degrading the flowing wastewater is to develop flexible large-scale filter-membrane with high photocatalytic activity. To address the issue, with carbon fiber cloth (CFC) as the porous substrate and TiO/AgPO as ultraviolet/visible (UV/Vis) responsed components, we reported the in-situ growth of TiO/AgPO nanojunctions on CFC as filter-membrane-shaped photocatalyst. The resulting CFC/TiO/AgPO is composed of CFC whose surface is decorated with TiO nanorods (length: 1 ± 0.5 μm, diameter: 150 ± 50 nm) and AgPO nanoparticles (diameter: 20-100 nm). CFC/TiO/AgPO displays a broad absorption region with two edges (~410 and ~510 nm), owing to the bandgaps of TiO and AgPO. Under Vis or UV-Vis light illumination, CFC/TiO/AgPO (4 × 4 cm) can efficiently degrade more phenol (80.6%/89.4%), tetracycline (TC, 91.7%/94.2%), rhodamine B (RhB, 98.4%/99.5%) and acid orange 7 (AO7, 97.6%/98.3%) in the beaker than CFC/TiO or CFC/AgPO. Especially, CFC/TiO/AgPO (diameter: ~10 cm) as the filter-membrane was used to construct multiple device for degrading the flowing RhB wastewater. The removal efficiency of RhB increases from 19.6% at the 1st pool to 96.8% at the 8th pool. Therefore, this study brings some insights for purifying organic pollutants in static or flowing wastewater by using filter-membrane-shaped photocatalysts.

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This article was published in the following journal.

Name: Journal of colloid and interface science
ISSN: 1095-7103
Pages: 213-221

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