Hydrothermal synthesis and investigation of optical properties of Nb5+-doped lithium silicate nanostructures

Abstract

The hydrothermal synthesis and optical properties of Nb 5? -doped lithium metasilicate and lithium disilicate nanomaterials were investigated. The microstructures and morphologies of the synthesized Li 2-2x-Nb 2x SiO 31d and Li 2-2x Nb 2x Si 2 O 51d nanomaterials were studied with powder X-ray diffraction and scanning electron microscopy techniques, respectively. The synthesized niobium-doped lithium metasilicate and lithium disilicate nanomaterials, respectively, are isostructural with the standard bulk Li 2 SiO 3 (space group Cmc2 1 ) and Li 2 Si 2 O 5 (space group Ccc2) materials. Photoluminescence spectra of the synthesized materials are studied. The measured optical properties show dependence on the dopant amounts in the structure.

Microstructure and Mechanical Properties of Li2Si2O5 Whisker-Reinforced Glass-Ceramics

“…At present, the hydrothermal method has broad application prospects in the synthesis of nanophase materials under low-temperature conditions. The hydrothermal method is environmentally friendly, as its reaction is carried out under closedsystem conditions, saving energy (Alemi et al, 2014a;Alemi et al, 2014b). , the crystallinity of the samples remained relatively constant (from 75.98 ± 5.72% to 78.09 ± 8.89%) upon varying the whisker content from 0 to 1 wt%, while it increased significantly to 86.86 ± 7.18% in LDW5.…”