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Solar photocatalytic glycerol reforming for hydrogen production over Ternary Cu/THS/graphene photocatalyst: Effect of Cu and graphene loading

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  • Seadira, Tumelo W.P.
  • Masuku, Cornelius M.
  • Scurrell, Michael S.

Abstract

Ternary Cu/TiO2/rGO photocatalysts with varying Cu and graphene loadings were prepared by a solvothermal method. Pure anatase TiO2 hollow spheres (THS) were prepared with titanium butoxide, ethanol, ammonium sulphate, and urea via a hydrothermal method; Cu nanoparticles were subsequently loaded on the surface of the hollow spheres by wet impregnation. During the solvothermal process, deposition and well dispersion of Cu–TiO 2 hollow spheres composites onto graphene oxide surface, as well as the reduction of graphene oxide to graphene were achieved. The morphological and structural properties of the prepared samples were characterized by Brunauer-Emmett-Tellet (BET), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), UV–vis DRS, and Photoluminescence (PL). The activity of the prepared catalyst was tested for hydrogen production via simultaneous photocatalytic water-splitting and glycerol reforming under natural solar light irradiation. The excellent photocatalytic activity of the ternary Cu/THS/graphene catalyst is attributed to the graphene sheets, which acts as both storage and transferor of electrons generated at the Cu and TiO2 heterojunction, thus increasing the electron-hole pair separation.

Suggested Citation

  • Seadira, Tumelo W.P. & Masuku, Cornelius M. & Scurrell, Michael S., 2020. "Solar photocatalytic glycerol reforming for hydrogen production over Ternary Cu/THS/graphene photocatalyst: Effect of Cu and graphene loading," Renewable Energy, Elsevier, vol. 156(C), pages 84-97.
    • Handle: RePEc:eee:renene:v:156:y:2020:i:c:p:84-97
    DOI: 10.1016/j.renene.2020.04.020
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    References listed on IDEAS

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    1. Gradisher, Logan & Dutcher, Bryce & Fan, Maohong, 2015. "Catalytic hydrogen production from fossil fuels via the water gas shift reaction," Applied Energy, Elsevier, vol. 139(C), pages 335-349.
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    1. Albukhari, Soha M. & Al-Hajji, L.A. & Ismail, Adel A., 2024. "Construction of n-n heterojunction copper manganese spinel/mesoporous WO3 photocatalyst for efficient H2 evolution rate from aqueous glycerol," Renewable Energy, Elsevier, vol. 228(C).
    2. Sun, Zhen & Wang, Junxiang & Lu, Sen & Zhang, Guan, 2022. "Enzymatic biomass hydrolysis assisted photocatalytic H2 production from water employing porous carbon doped brookite/anatase heterophase titania photocatalyst," Renewable Energy, Elsevier, vol. 197(C), pages 151-160.

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