Hydrothermal Synthesis, Structural and Catalytic Studies of CuBi2O4 Nanoparticles

Abstract

In the present work CuBi2O4 nano-spinel has been synthesized via mild hydrothermal method<br />at 180°C for 10 h. The synthesized nanomaterials were characterized by several techniques<br />to emphasis the structure and properties of produced materials. The crystal structure was<br />investigated by X-ray powder diffraction method and the values of the refined unit cell volume<br />and the structure properties were studied by using the Rietveld analysis is done using Fullprof<br />program. The results shew the formation of tetrahedral structure with space group P4/<br />ncc for this sample. Also, the morphologies of the synthesized materials were figured out<br />by field emission scanning electron microscope (FE-SEM). According to the FESEM images,<br />several nano cubic form of particles grew on micro spherical particles. As well, the catalytic<br />performance of obtained CuBi2O4 was studied in Biginelli reaction. The reaction conditions of<br />this study optimized by experimental design method. This experiment stablished high catalytic<br />performance of copper bismuth oxide in compare with some other metal oxide catalysts. Also,<br />the results shew this product is reusable homogenous catalyst.