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  4. Solar light-driven simultaneous pharmaceutical pollutant degradation and green hydrogen production using a mesoporous nanoscale WO3/BiVO4 heterostructure photoanode
 
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2023
Journal Article
Title

Solar light-driven simultaneous pharmaceutical pollutant degradation and green hydrogen production using a mesoporous nanoscale WO3/BiVO4 heterostructure photoanode

Abstract
Photoelectrocatalysis is one of the most favourable techniques that could be used in this remit as it has the potential to utilise natural sunlight to generate oxidants in situ to mediate effective pollutant degradation. This work, therefore, utilises a mesoporous nanoscale WO3/BiVO4 heterostructure photoanode to effectively degrade ibuprofen in wastewater combined with simultaneous green hydrogen generation at the cathode under simulated sunlight. A near complete degradation (>96%) of ibuprofen (starting concentration of 100 mg/L), with no hazardous intermediates (determined via mass spectrometry analysis), along with simultaneous H2 evolution of 114 µmol/cm2 after 145 min was demonstrated in this work. In addition, intermediate product analysis, the role of the type of in situ oxidants on degradation, the mechanistic pathway of degradation, and the material characteristics of mesoporous photoanode were also investigated. First experimental evidence of in situ generated H2O2 contributing to the degradation of ibuprofen is presented.
Author(s)
Davies, Katherine Rebecca
Allan, Michael G.
Nagarajan, Sanjay
Townsend, Rachel
Dunlop, Tom O.
McGettrick, James D.
Asokan, Vijayshankar
Ananthraj, Sengeni
Watson, Trystan M.
Godfrey, A. Ruth
Durrant, James R.
Maroto-Valer, M. Mercedes
Kühnel, Moritz Friedrich
Fraunhofer-Institut für Windenergiesysteme IWES  
Pitchaimuthu, Sudhagar
Journal
Journal of environmental chemical engineering  
Open Access
DOI
10.1016/j.jece.2023.110256
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Windenergiesysteme IWES  
Keyword(s)
  • Hydrogen

  • Pharmaceutical pollutants

  • Photoelectrocatalysis

  • Solar Energy

  • Wastewater treatment

  • WO , BiVO 3 4

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