Formation mechanism and luminescence appearance of Mn-doped zinc silicate particles synthesized in supercritical water

Fine tuning of the dimensionality of zinc silicate nanostructures and their application as highly efficient absorbents for toxic metal ions

“…Examples of 1-D zinc silicates with different morphologies-including needle-like [25], nanowires [26,27], rice-like [28], and nanorod-like [29][30][31][32]-have been synthesized by hydrothermal methods. However, 0-D hollow spheres and 2-D membrane nanostructures have been scarcely reported.…”

Rapid Production of Micro- and Nano-particles Using Supercritical Water

“…Photocatalytic activity of the PVA-assisted hydrothermally synthesized nanocrystalline SrTiO 3 powders for degradation of rhodamine B was much higher than those particles prepared without PVA [108]. [116][117][118] were synthesized in SCW in batch or flow reactors. Silver nanoparticles were produced by the thermal decomposition of Ag 2 O in SCW in a batch reactor for long reaction times (up to 60 min) [119].…”

Formation of α- and β-phase Mn-doped zinc silicate in supercritical water and its luminescence properties at Si/(Zn+Mn) ratios from 0.25 to 1.25

“…2). We have reported that the irregularly shaped ZSM contains much b-ZSM and a-ZSM that was transformed from b-ZSM via solid-diffusion [28]. At Si ratios over 0.75 (runs [10][11][12], SEM images showed that spherical particles appeared along with the needle-like and irregularly shaped particles.…”

“…In the solid-state reaction, Zn 2 SiO 4 forms by diffusing ZnO from the surface of SiO 2[14]. On the other hand, in the supercritical process, b-Zn 2 SiO 4 forms on the surface of undissolved zinc compound[28].…”