Combined Adsorption/Photocatalytic dye removal by copper-titania-fly ash composite

Andrea Pace, Devagi Kanakaraju, Ying-Chin Lim, Ying-Chin Lim, Muhamad Hazim Bin Ya

Risultato della ricerca: Articlepeer review

2 Citazioni (Scopus)

Abstract

Achieving both photocatalytic efficiency and adsorption capacity is essential to produce a highly efficient photocatalyst. This study fabricated a new photocatalyst by combining copper (Cu) doped titanium dioxide (TiO2) with fly ash (FA). The photocatalysts were synthesized using mild acid (acid-FA/Cu/TiO2), base (base-FA/Cu/TiO2), and deionized water (rFA/Cu/TiO2) activated FA. EDX confirmed the inclusion of Cu in both Cu/TiO2 and FA/Cu/TiO2 composites. XRD analysis indicated the presence of the anatase form of TiO2 after Cu doping and incorporation into modified FA. All three FA/Cu/TiO2 composites demonstrated high absorption (UV and visible region) compared to their TiO2 and Cu/TiO2 counterparts based on the diffuse reflectance UV-Vis spectra. Complete removal of methyl orange under UV and 99.1% removal under visible light irradiation were attained using 1.5 g/L base-FA/Cu/TiO2. Both dark and irradiation phases demonstrated the synergistic role of adsorption and photocatalysis by the FA/Cu/TiO2 composites to ensure the removal of dye in water.
Lingua originaleEnglish
pagine (da-a)1-8
Numero di pagine8
RivistaSurfaces and Interfaces
Volume19
Stato di pubblicazionePublished - 2020

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1600.1600???
  • Condensed Matter Physics
  • ???subjectarea.asjc.3100.3100???
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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