Spinel-type zinc aluminate (ZnAl2O4) nanoparticles prepared by the co-precipitation method: A novel, green and recyclable heterogeneous catalyst for the acetylation of amines, alcohols and phenols under solvent-free conditions

Fabrication and luminescence properties of one-dimensional ZnAl2O4 and ZnAl2O4: A3+ (A=Cr, Eu, Tb) microfibers by electrospinning method

“…2b, which can be attributed to the non-degenerate infrared-active mode and symmetry stretching mode of free nitrate ions [30,31]. When the samples were calcined at 1000 8C, the ZnAl 2 O 4 spinel phase formed in the fibers, and new absorption peaks located at 662, 556 and 498 cm À1 are due to the Al-O stretching mode, Zn-O stretching mode and Al-O bending mode respectively [32][33][34][35]. These three peaks are the characteristic of the regular spinel structure [26].…”

Synthesis and fabrication of GPS patch antennas by using Zn(1 − x)Ti x Al2O4 thin films

“…It is noted that the number and shape of FTIR bands (below 1000 cm -1 ) of Ti x Zn (1 -x) Al 2 O 4 thin films is dependent on TiO 2 concentration. In most published papers [3,18], ZnAl 2 O 4 showed two main bands at around 499 and 670 cm -1 . Farhadi and Panahandehjoo [18] reported that the two bands which appeared due to ZnAl 2 O 4 were formed as a mixture of the normal spinel (Al 3?…”

“…In most published papers [3,18], ZnAl 2 O 4 showed two main bands at around 499 and 670 cm -1 . Farhadi and Panahandehjoo [18] reported that the two bands which appeared due to ZnAl 2 O 4 were formed as a mixture of the normal spinel (Al 3? ions in octahedral sites of AlO 6 groups) and the inverse spinel (Al 3?…”

Synthesis and characterization of novel spinel Zn 1.114 La 1.264 Al 0.5 O 4.271 nanoparticles

“…The spinel-type zinc aluminate (ZnAl 2 O 4 ) nanoparticles have been applied as green and recyclable heterogeneous catalyst for the acetylation of amines, alcohols and phenols under solvent-free conditions [26]. Also, M II Cr 2 O 4 -spinels were used as supports for Au nanoparticles in oxidation of CO [27].…”