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Article Abstract
Nanoscale FeWO/BiVO heterojunctions were directly grown on the graphite fiber felt (GF) with good conductivity to construct a FeWO/BiVO @GF solar photo-Fenton like wastewater treatment system. The removal effect of COD from phenolic wastewater and the mechanism of synergistic improvement of wastewater treatment efficiency by this system were investigated. The FeWO/BiVO heterojunction prepared by hydrothermal method exhibited higher photoelectric conversion efficiency and solar light utilization rate, thus endowing FeWO/BiVO with excellent solar-Fenton like reaction activity.The photo-Fenton activity can be maintained well even within the pH range of 2-8. Loading FeWO/BiVO nano-heterojunction on GF helped to increase the contact area between Fenton reagents and wastewater, facilitate the electron transfer on the FeWO/BiVO heterojunction and enable the recovery and reuse of the Fenton reagents.Under solar light radiation, the COD removal efficiency of FeWO/BiVO @GF/HO system in phenolic wastewater was more than 92%. Even after five cycles, the system still exhibited excellent operation stability. FeWO/BiVO@GF promoted the conversion and cycling of Fe(III)/Fe(II) by accelerating the separation and transport of photogenerated electrons/holes and increasing the concentration of active species, thereby stimulating excellent solar photo-Fenton like activity.The results are significance to the development of green and efficient photo-Fenton process for advanced treatment of industrial wastewater.
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| http://dx.doi.org/10.1016/j.chemosphere.2024.143980 | DOI Listing |
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