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Encapsulation of spinel CuCo2O4 hollow sphere in V2O5-decorated graphitic carbon nitride as high-efficiency double Z-type nanocomposite for levofloxacin photodegradation

Hasanvandian, F ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jhazmat.2021.127090
  3. Publisher: Elsevier B.V , 2022
  4. Abstract:
  5. In this study, spinel CuCo2O4 (CCO) with a hierarchical hollow sphere morphology was encapsulated in V2O5-decorated ultra-wrinkled graphitic carbon-nitride (VO-UCN) for the first time via a facile glycerol-assisted solvothermal method in the interest of developing a novel high-efficiency double Z-type nano-photocatalyst (denoted as VO-UCN@CCO). The remarkable physicochemical features of the as-prepared nano-photocatalysts were verified using diverse characterization techniques including TGA, XRD, FT-IR, FE-SEM, TEM, BET, UV–vis DRS, PL, EIS, and transient photocurrent techniques. Herein, VO-UCN@CCO nanocomposite was employed for the photodisintegration of levofloxacin (LVOF) antibiotic under visible-light irradiation and the impact of certain operative reaction system variables was explored in an effort to optimize the photocatalytic capability. The 40% loading of CCO in VO-UCN@CCO nanocomposite was found to display maximum photocatalytic performance (about 95%) for LVOF photodecomposition, which was 9.3, 6.6, and 13.8 times greater when compared with pristine VO, UCN, and CCO, respectively. A high capability was observed for as-prepared photocatalyst during reusability tests and near 90% degradation efficiency was obtained in the sixth run. The complete mineralization of LVOF was achieved by the VO-UCN@CCO photocatalyst process after 300 min of reaction. An excellent synergy factor towards the degradation of LVOF was obtained for VO-UCN@CCO compared to each of its components alone. This peculiar design is envisaged to provide new inspirations for ameliorating the photocatalytic decontamination of tenacious and non-biodegradable species present in real wastewater. © 2021 Elsevier B.V
  6. Keywords:
  7. G-C3N4-based photocatalysts ; Visible light ; Antibiotics ; Carbon nitride ; Copper compounds ; Degradation ; Efficiency ; Light ; Nanocomposites ; Reusability ; Vanadium pentoxide ; Antibiotic photodegradation ; Copper cobaltite ; G-C3N4-based photocatalyst ; Graphitic carbon nitrides ; Higher efficiency ; Hollow sphere ; Nano photocatalysts ; Photo degradation ; Copper ; Carbon ; Cobalt derivative ; Glycerol ; Superoxide ; Graphitic carbon nitride ; Nitrogen derivative ; Spinell ; Catalyst ; Chemical compound ; Chemical reaction ; Detection method ; Inorganic compound ; Mineralization ; Pollutant removal ; Wastewater ; Wastewater treatment ; Adsorption ; Calcination temperature ; Conductance ; Controlled study ; Decontamination ; Desorption ; Diffuse reflectance spectroscopy ; Electron transport ; Energy ; Field emission scanning electron microscopy ; Fourier transform infrared spectroscopy ; Heat tolerance ; Impedance spectroscopy ; Nanocatalysis ; Nanoencapsulation ; PH ; Photocatalysis ; Photodegradation ; Physical chemistry ; Pore volume ; Surface area ; Thermogravimetry ; Transmission electron microscopy ; Ultraviolet visible spectroscopy ; X ray diffraction ; Infrared spectroscopy ; Aluminum oxide ; Catalysis ; Graphite ; Levofloxacin ; Magnesium oxide ; Nanocomposites ; Nitrogen Compounds ; Photolysis ; Spectroscopy, Fourier Transform Infrared
  8. Source: Journal of Hazardous Materials ; Volume 423 , 2022 ; 03043894 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0304389421020586