AI Article Synopsis

  • Photocatalytic technology using peroxymonosulfate (PMS) shows promise for treating water pollution, specifically targeting ciprofloxacin (CIP) degradation.
  • A composite material called CoO/BiWO was created through an in-situ calcination process and demonstrated the ability to remove 86.2% of CIP within just 5 minutes of visible light irradiation and PMS activation.
  • The effectiveness of this system is linked to the synergy between CoO and BiWO's electronic properties, suggesting that the CoO/BiWO/PMS combination could be a viable solution for removing tough organic pollutants from wastewater.

Article Abstract

Photocatalytic technology assisted via peroxymonosulfate (PMS) has good potential in water treatment. In this study, the CoO/BiWO composite was constructed via an in-situ calcination process and used to activate PMS for the degradation of ciprofloxacin (CIP) under visible light irradiation. The obtained 5 wt% CoO/BiWO(CBWO-2) can highly effectively remove 86.2% CIP within 5 min visible light irradiation in presence of PMS. The excellent degradation performance of CoO/BiWO/PMS system can be attributed to the synergistic effect between p-n heterojunction and PMS activation. The conduction band and valence band deviation between CoO and BiWO were calculated by XPS techniques. Besides, DFT calculations were performed to further confirm the internal structure between CoO and BiWO. This work not only provides an approach to fabricate heterostructures but also indicated that CoO/BiWO/PMS/Vis system is a potential environment remediation alternative for the efficient removal of recalcitrant organic compounds from wastewaters.

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Source
http://dx.doi.org/10.1016/j.jcis.2020.12.043DOI Listing

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