Dhanakumar, Selvaraj and Shanthi, Kuppusamy (2018) E-Waste Based V2O5/RGO/Pt Nanocomposite for Photocatalytic Degradation of Oxytetracycline. Environmental Progress & Sustainable Energy. pp. 1-7.

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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 Xrays (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, 2018

Item Type: Article
Uncontrolled Keywords: E-waste, nanocomposite, oxytetracycline, photocatalytic degradation, RGO, vanadium pentoxide
Divisions: PSG College of Arts and Science > Department of Environmental Science
Depositing User: Mr Team Mosys
Date Deposited: 16 Aug 2022 05:10
Last Modified: 16 Aug 2022 05:10
URI: http://ir.psgcas.ac.in/id/eprint/1463

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