Facile Synthesis of Pd/Cu2O Octahedral with Enhanced Photocatalytic Activity and Its Application of Degradation of Direct Red 278
محورهای موضوعی : Journal of Nanoanalysis
Shahla Ekhtiyari
1
(Department of Inorganic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran)
Leila Kafi-Ahmadi
2
(Department of Inorganic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran)
Shahin Khademinia
3
(Department of Inorganic Chemistry, Faculty of Chemistry, Semnan University, Semnan 35351 19111, Iran)
کلید واژه: Nanocatalyst, Solvothermal, doping, Biginelli, Strontium Arsenate,
چکیده مقاله :
Doping some lanthanide ions into Sr2As2O7 crystal system is reported for thefirst time by a simple solvothermal method using Sr(NO3)2, As2O3, Er2O3 andNd2O3 compounds. Characterization of the as-synthesized nanomaterials isdone by powder X-ray (PXRD) analysis. Rietveld's analysis data confirmed thatthe synthesized materials were crystallized in a mixture of three crystal phases.FESEM images revealed that dopant ion type had a considerable effect on themorphology of the final product. The data showed that the morphology of thesynthesized materials was comb-like structure and particle. Direct bandgapenergy (Eg) of the materials obtained using ultraviolet-visible spectra showed thatthe Eg was about 3.5 eV. The synthesized nanomaterials were used as catalysts inthe Biginelli reactions. The data confirmed that the materials could behave asLewis acid catalyst in the reactions. The catalytic performance of the synthesizedsample was 92% when the catalyst amount was 0.03 g, the reaction temperature was90 °C and the reaction time was 100 min.
