Department of inorganic chemistry, university of Semnan, Semnan, Iran
10.22091/jaem.2025.10853.1011
Abstract
Synthesis of Yb2V2O7 nano-powders was reported by solid state reactions using Yb2O3 and Na2VO4 at stoichiometric 1:1 Yb:V molar ratio as raw materials for the first time. Powder X-ray diffraction (PXRD) technique was used to characterize the as-prepared nanomaterials. Crystal phase change due to changing the reaction time was studied by FullProf program. The results showed that the patterns had a main cubic Yb2V2O7 crystal structure with a space group of Fd3 ̄m. As could be found from the XRD data, the synthesized Yb2V2O7 sample was stable at the reaction temperature until 400 ºC. It was found that increasing the reaction temperature had a reverse effect on the stability and so purity of the synthesized samples. FESEM images showed that the synthesized Yb2V2O7 particles had sphere morphology with homogeneity in size and morphology. Ultraviolet–visible spectroscopy (UV-Vis) analysis showed that the synthesized Yb2V2O7 nanopowder had strong light absorption property in the ultraviolet-visible light region. The catalytic performance of the synthesized Yb2V2O7 nanomaterial was studied for the fabrication of 2-amino-4H-chromene compounds under solvent condition. The reaction parameters affect on the reaction yield such as reaction time, solvent type and catalyst amount were studied. The maximum yield for the synthesis of the Chromene compounds was obtained (94%) when H2O was used as reaction solvent, the catalyst amount, reaction time and temperature, and illumination frequency were (10 mol%), 12 min, 70 ˚C and 50 kHz, respectively, while benzaldehyde was used as aldehyde derivative.
Khademinia, S. (2024). Synthesis of Yb2V2O7 nanomaterials for catalytic fabrication of 2-amino-4H-chromene compounds under microwave irradiations. Advances in Energy and Materials Research, 1(2), 32-40. doi: 10.22091/jaem.2025.10853.1011
MLA
Shahin Khademinia. "Synthesis of Yb2V2O7 nanomaterials for catalytic fabrication of 2-amino-4H-chromene compounds under microwave irradiations". Advances in Energy and Materials Research, 1, 2, 2024, 32-40. doi: 10.22091/jaem.2025.10853.1011
HARVARD
Khademinia, S. (2024). 'Synthesis of Yb2V2O7 nanomaterials for catalytic fabrication of 2-amino-4H-chromene compounds under microwave irradiations', Advances in Energy and Materials Research, 1(2), pp. 32-40. doi: 10.22091/jaem.2025.10853.1011
VANCOUVER
Khademinia, S. Synthesis of Yb2V2O7 nanomaterials for catalytic fabrication of 2-amino-4H-chromene compounds under microwave irradiations. Advances in Energy and Materials Research, 2024; 1(2): 32-40. doi: 10.22091/jaem.2025.10853.1011
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