Citrus limetta essential oil mediated synthesis of Dy2O3/Eu2O3/rGO nanocomposite for the removal of ciprofloxacin under irradiation of visible and UV light

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2024-01, Vol.299, p.116997, Article 116997
• Main Authors: Asif, Arooj, Farrukh, Muhammad Akhyar
• Format: Article
• Language: English
• Subjects: Ciprofloxacin; Citrus limetta; Essential oil; Green method; Photocatalytic degradation; Reduced graphene oxide
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/j.mseb.2023.116997

[Display omitted] •Synthesize of Dy2O3/Eu2O3 and Dy2O3/Eu2O3/rGO nanocomposites via green and green deposition methods.•Citrus limetta essential oil was used as a reducing and caping agent.•Red shift in the band gap was observed in Dy2O3/Eu2O3/rGO nanocomposite.•Good photocatalyst for the removal ciprofloxacin antibiotic under the illumination of UV and Visible light. Dysprosium oxide-europium oxide (Dy2O3/Eu2O3) nanocomposite and reduced graphene oxide (rGO) were synthesized via green methods using Citrus limetta essential oil which acts as a reducing and stabilizing agent. Dy2O3/Eu2O3 nanocomposite was further anchored on rGO by green deposition method to get Dy2O3/Eu2O3/rGO nanocomposite. The bandgap energy of Dy2O3/Eu2O3/rGO was shifted from 5.10 eV to 3.66 eV due to the deposition of Dy2O3/Eu2O3 on rGO as compared to undoped Dy2O3/Eu2O3. The average crystallite size of Dy2O3/Eu2O3/rGO nanocomposite was found 27.6 nm as calculated by using X-ray diffraction (XRD). Moreover, incorporation of Dy2O3/Eu2O3 nanoparticles on rGO surface has significantly enhanced the photocatalytic degradation of ciprofloxacin antibiotic under the irradiation of visible and UV lights, which is 87 % and 91 % respectively. Hence the prepared nanocomposite Dy2O3/Eu2O3/rGO has shown promising photocatalytic efficiency to remove antibiotics from pharmaceutical industrial wastes.