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- Title
E‐Waste Based V<sub>2</sub>O<sub>5</sub>/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline.
- Authors
Mohan, Harshavardhan; Selvaraj, Dhanakumar; Kuppusamy, Shanthi; Venkatachalam, Janaki; Park, Yool‐Jin; Seralathan, Kamala‐Kannan; Oh, Byung‐Taek
- Abstract
The increasing prevalence of antibiotics in the environment has promoted the development of antibiotic resistant microorganisms, and novel approaches are needed to effectively remove antibiotics from water and mitigate this worldwide problem. A reduced graphene oxide‐V2O5 (RGOV) nanocomposite was synthesized and used for photocatalytic degradation of the antibiotic oxytetracycline (OTC) in aqueous solution. The Sol–Gel method was employed for V2O5 synthesis from e‐waste‐based vanadium nitrate, and a one pot solvothermal method was used to synthesize RGOV. Fourier‐transform infrared spectroscopy (FTIR), X‐ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM) with energy dispersive analysis of X‐rays (EDAX) confirmed V‐O‐C bonds on the surface of the RGOV nanocomposites. A decrease in the band gap of V2O5 from 2.21 to 2.13 eV was supported by diffuse reflectance ultraviolet–visible spectrophotometry. OTC adsorption onto the nanocomposite increased with an increase in RGO concentration and saturated at 17% for RGOV with 30% graphene oxide. The composite degraded 90% of the OTC present in aqueous solution (50 mg/L). Platinum (1%) doping further increased OTC degradation by the nanocomposite to 98.7%. Optimum conditions for maximum OTC degradation are (1) an initial OTC concentration of 50 mg/L, (2) a RGOV nanocomposite dose of 0.5 g/L, and (3) a 40 min incubation time. Our results support the potential use of RGOV nanocomposite for OTC photodegradation. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13123, 2019
- Subjects
AMERICAN Institute of Chemical Engineers; OXYTETRACYCLINE; ENERGY dispersive X-ray spectroscopy; ELECTRONIC waste; FOURIER transform infrared spectroscopy; INFRARED spectroscopy; CHEMICAL engineering
- Publication
Environmental Progress & Sustainable Energy, 2019, Vol 38, Issue 4, pN.PAG
- ISSN
1944-7442
- Publication type
Article
- DOI
10.1002/ep.13123