Synthesis, structure and spectroscopy of Fe2+:MgAl2O4 transparent ceramics and glass-ceramics

Effect of Gold Nanoparticles on the Crystallization and Optical Properties of Glass in ZnO-MgO-Al2O3-SiO2 System

“…The density variation for the Matrix and Au-doped glass samples with the heat treatment temperature is shown in Figure 1b. It demonstrates a complex behavior typical for density variation of spinel-based glass-ceramics and was reported previously for similar glass systems [34,35]. One can see that density variations for both samples are very close.…”

“…This finding once again indicates the negligible influence of the Au NP formation on the structure change of the studied glasses. Nevertheless, optical properties of the Au-doped glass samples undergo cru- It is known that the increase of the ~800 cm −1 band intensity with the decrease of the ~900 cm −1 band could be the indicator of the phase separation development in the glass during the heat treatment [34]. Hence, we analyze the evolution of the Raman bands in the high-frequency part of the spectra with the heat treatment temperature increase.…”

“…When analyzing the XRD patterns, what draws attention is a slight shift of the amorphous halo position to smaller angles for treated samples, which suggests a change in the composition of the residual glass. Since the position of the amorphous halo becomes close to that of the fused silica, the residual glass seems to be more enriched in silica compared to the composition of the parent glass [34]. Figure 3 shows the data for the crystallized fraction and crystallite size determined from the abovementioned XRD patterns.…”

“…It is known that the increase of the ~800 cm −1 band intensity with the decrease of the ~900 cm −1 band could be the indicator of the phase separation development in the glass during the heat treatment [34]. Hence, we analyze the evolution of the Raman bands in the high-frequency part of the spectra with the heat treatment temperature increase.…”

Progress in Synthesis and Photocatalytic Activity of MAl2O4(M=Mg, Sr, Ba) Based Photocatalysts

“…Among these spinel aluminates, MAl 2 O 4 (A = Mg, Sr, and Ba) has attracted extensive attention from researchers due to its excellent physicochemical properties make it can be used as long afterglow phosphor base materials, lightweight helmets, photoelectric devices, microwave dielectric capacitors, and high temperature windows, etc. (Han et al, 2018;Takebuchi et al, 2020;Basyrova et al, 2021;Kiryakov et al, 2021) Simultaneously, MAl 2 O 4 is a kind of environmental friendly material, in the photocatalytic field, especially in the degradation of organic dyes has a good application. (Wang et al, 2019a;Shifa Wang et al, 2020;Liu et al, 2022).…”