Abstract
The use of perovskite-based materials and their derivatives can have an important role in the heterogeneous catalytic field based on photochemical processes. Photochemical reactions have a great potential to solve environmental damage issues. The presence of precious metals in the perovskite structure (i.e., Ag, Au, or Pt) may improve its efficiency significantly. The precious metal may comprise the perovskite lattice as well as form a heterostructure with it. The efficiency of catalytic materials is directly related to processing conditions. Based on this, this review will address the use of perovskite materials combined with precious metal as well as their processing methods for the use in catalyzed reactions.
Highlights
Perovskite-based materials have been extensively used in photocatalytic systems
The photocatalytic processes are included in a broader and general category of chemical and photochemical reactions known as advanced oxidation processes (AOPs), which apply powerful oxidizing agents in order to degrade persistent organic pollutants as well as remove certain inorganic pollutants
The spectra of the sample doped with Mn, Ru, Rh, and Ir, we found an absorption band as a shoulder in addition to the absorption band regarding SrTiO3 indicating that the dopants had created discontinuous levels in the forbidden band
Summary
Perovskite-based materials have been extensively used in photocatalytic systems. The incorporation of a precious metal on perovskite lattice or the use of these elements to modify the surface of perovskite particles result in better light absorptions, which promotes the photochemical behavior required for the catalytic process, such as photocatalysis and electrocatalysis; silver (Ag) and gold (Au) are the most used precious metals for this purpose. In order to understand the advantages of using perovskite structures associated with precious metals as photocatalysis in the catalytic process, this review addresses considerations on photocatalysis principles, perovskite structure, and synthesis methods to obtain a catalyst
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