Ultrafine gahnite (ZnAl2O4) nanocrystals: Hydrothermal synthesis and photoluminescent properties

Characterization of ZnAl2O4 Spinel Obtained by Hydrothermal and Microwave Assisted Combustion Method: A Comparative Study

“…Then, the above solution was transferred into a 100 mL Teflon-lined stainless steel autoclave, which was further sealed and kept at 180 °C in an electrical oven for 24 h. The final pH value of the reaction solution was ~10. After being cooled to room temperature, the product was filtered, thoroughly washed with water until the pH value of the filtrate was neutral 13 . Then, the resulting precipitate was dried at 80 °C overnight and denoted as ZnAl 2 O 4 -H.…”

“…Therefore, it is currently being used as high temperature material, sensors, eletronic and optical materials, as well as catalysts and catalyst support [4][5][6][7][8] . In general, many methods of synthesis have been used for the preparation of ZnAl 2 O 4 oxide, which include co-precipitation [9][10] , modifed citrate sol-gel 11 , microwave combustion 3,12 , hydrothermal [13][14] , sol-gel 15 , polymeric precursor 16 and solid state route 17 . Among the several preparation methods, microwave assisted combustion synthesis is one of the most effective, fast, simple and energy efficiency method for the synthesis of metal oxide based materials, producing high purity and chemically homogeneous powders 3,6 .…”

Synthesis of zinc aluminate (ZnAl2O4) spinel and its application as photocatalyst

“…The photocatalytic degradation of organic pollutants in the water such as dye [14][15][16] , phenol 17 and pesticide 18 using different semiconductor materials has attracted much attention recently. ZnAl 2 O 4 is also a semiconductor material suitable for ultraviolet (UV) photoeletronic application 19 due it wide energy bandgap (about 3.8 eV) 20 . A few studies involving the degradation of organic dyes using ZnAl 2 25 .…”

Correlation between inhomogeneous width and crystallite size: 2E →4A2 luminescence of Co(II) in nanocrystalline ZnAl2O4/Co(II)

“…In particular, we explore the correlation between particle size and inhomogeneous broadening, and, spectral shifts. There has been considerable interest in the preparation and properties of pure and doped nanocrystalline zinc aluminate in recent years [16][17][18][19][20][21]. ZnAl 2 O 4 is an important oxide with a wide range of applications such as in catalysis and catalyst support.…”