Facile Synthesis of Pd/Cu2O Octahedral with Enhanced Photocatalytic Activity and Its Application of Degradation of Direct Red 278

Document Type : Original Research Paper


1 Department of Inorganic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran

2 Department of Inorganic Chemistry, Faculty of Chemistry, Semnan University, Semnan 35351 19111, Iran



Doping some lanthanide ions into Sr2As2O7 crystal system is reported for the
first time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 and
Nd2O3 compounds. Characterization of the as-synthesized nanomaterials is
done by powder X-ray (PXRD) analysis. Rietveld's analysis data confirmed that
the synthesized materials were crystallized in a mixture of three crystal phases.
FESEM images revealed that dopant ion type had a considerable effect on the
morphology of the final product. The data showed that the morphology of the
synthesized materials was comb-like structure and particle. Direct bandgap
energy (Eg) of the materials obtained using ultraviolet-visible spectra showed that
the Eg was about 3.5 eV. The synthesized nanomaterials were used as catalysts in
the Biginelli reactions. The data confirmed that the materials could behave as
Lewis acid catalyst in the reactions. The catalytic performance of the synthesized
sample was 92% when the catalyst amount was 0.03 g, the reaction temperature was
90 °C and the reaction time was 100 min.