Details

Autor(en) / Beteiligte

• Arya, Mamta
• Kaur, Manpreet
• Kaur, Amandeep
• Singh, Surinder
• Devi, Pooja
• Kansal, Sushil Kumar

Titel

Hydrothermal synthesis of rGO-Bi2WO6 heterostructure for the photocatalytic degradation of levofloxacin

Ist Teil von

• Optical materials, 2020-09, Vol.107, p.110126, Article 110126

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2020

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• Herein, we present an overt hydrothermal approach for the synthesis of rGO-Bi2WO6 heterostructures based catalyst, which were later probed with XRD, FTIR, PL, BET surface area, XPS, FE-SEM and HR-TEM for their structural, optical and morphological characteristics. The as prepared material was explored to degrade levofloxacin, an antibiotic, using visible light at room temperature. The rGO-Bi2WO6 photocatalyst under optimized parameters exhibited 74.3% degradation efficiency within 120 min. The impact of optimal parameters i.e. levofloxacin concentration, pH and photocatalyst loading was also considered. Notably, rGO-Bi2WO6 heterostructure manifested excellent photocatalytic performance in comparison to pure Bi2WO6 nanoplates for levofloxacin degradation under the same process conditions. This enhancement could be owed to reduction in recombination rates of photoexcited charge carriers in rGO-Bi2WO6 owing to the introduction of graphene, which served as an excellent charge transporter. The mechanistic study of degradation of levofloxacin proposed upon the radical trapping investigations revealed the significant contribution of electrons and holes in the photocatalytic process. [Display omitted] •Construction of rGO-Bi2WO6 heterostructure through hydrothermal method.•Utilized as a photocatalyst for the degradation of levofloxacin, an antibiotic under visible light illumination.•Exhibited enhanced degradation efficiency (74.3%) than pristine Bi2WO6 (46.2%) under the optimized conditions.•Enhanced photocatalytic performance could be due to the effective charge separation and transportation of charge carriers.