Photocatalytic Behavior of Supported Copper Double Salt: The Role of Graphene Oxide Articles uri icon

publication date

  • May 2022

start page

  • 1

end page

  • 9

volume

  • 2022

International Standard Serial Number (ISSN)

  • 2090-9063

abstract

  • The design of a photocatalyst that may work efficiently with sunlight is a fundamental concern to fight against environmental
    pollution and electrochemical hydrogen storage devices. In this work, it has been found that the green microwave-assisted
    decoration of graphene by copper double salt (DS) enhances visible sunlight photocatalysis efficiency. Nanohybrids of
    graphene oxide decorated with Cu(I) and Cu(II) oxides and copper hydroxy nitrate double salt were selected as photocatalysts
    for the degradation of rhodamine B in aqueous solution to study the effect of the graphene oxide support. The
    photodegradation process followed a pseudo–first-order kinetics for the bare catalysts, but the supported catalysts were best
    fitted to the Langmuir-Hinshelwood model. Supported systems were more efficient in terms of turnover and apparent rate
    constants. Diffuse reflectance spectroscopy with the use of Kubelka-Munk function allowed to measure bandgap energies. It
    was found that the absorption edge was reduced about 30% for the supported systems.