Molten‐Salt Synthesis and Characterization of Nickel‐Doped Forsterite Nanocrystals

Abstract

Nickel-doped forsterite (Ni 21 :Mg 2 SiO 4 ) nanocrystals have been synthesized by a facile molten-salt approach in the presence of NaCl and a surfactant (NP-7.5). The products were characterized by X-ray diffraction, transmission electron microscopy (TEM), high-resolution TEM, selected area electron diffraction (SAED), and luminescence spectra measurements. The crystal size could be controlled by tailoring the synthesis parameters. TEM, high-resolution TEM, and SAED results revealed the single crystalline character of Mg 2 SiO 4 nanoparticles. A possible model for the growth of Ni 21 :Mg 2 SiO 4 nanocrystals was postulated. The obtained Ni 21 :Mg 2 SiO 4 nanocrystals show strong, super broad, near-infrared luminescence at room temperature. These doped Mg 2 SiO 4 nanocrystals are promising gain mediums for super broadband optical amplification.

Corrosion Resistance of Novel Fly Ash-Based Forsterite-Spinel Refractory Ceramics

“…Other researchers are exploring the feasibility of a potential application of forsterite as a biomaterial in biomedicine for bone transplants due to its good compatibility with live tissue and high fracture toughness [8][9][10][11]. Researchers have also focused on the utilization of forsterite nanocrystals in the optical industry as a medium for optical lasers due to their great optical and mechanical properties [12,13].…”

Internal insulation and corrosion control of molten chloride thermal energy storage tanks

“…[12,13] Molten chloride salts in particular have been used to synthesize complex magnesium-rich ceramics, such as cordierite and forsterite. [14][15][16][17] Passivating corrosion layers that are rich in magnesium have been observed at the salt/ceramic interface and decrease abruptly in concentration as a function of depth into the ceramic. [18] The formation of a secondary phase on a ceramic surface poses the risk of differential thermal expansion and cracking, but should the system be held isothermally without thermal cycling, ceramics such as forsterite, which are reported to have a high melting point (1890 °C), low thermal expansion, and good chemical stability, may inhibit salt permeation and corrosion as in ceramic-coated alloys.…”

Molten salt synthesis and luminescence of Dy3+‐doped Y3Al5O12 phosphors

“…Some methods have been adopted to decrease the sintering temperature of solid‐state synthesis such as the addition of flux, mechanical mixing before the sintering and reaction in molten salts . In molten salt synthesis, salts with a relative low melting point melt to liquid at a comparatively low temperature; this provides a useable chemical action system for growth of crystals . In this study, we carried out molten salt synthesis of Y 3 Al 5 O 12 :Dy 3+ phosphors using the mixture NaCl–KCl as the flux.…”