Synthesis of Sr2SiO4 nanometer particles from the core–shell precursor of SrCO3/SiO2

Preparation of BaSnO3 and Ba0.96La0.04SnO3 by reactive core–shell precursor: formation process, CO sensitivity, electronic and optical properties analysis

“…24,25 In recent years, it has been found that the core-shell structure is helpful in preparing ternary and more complicated compounds at reduced temperature, since the contact area for reactants with a core-shell structure is normally larger while the diffusion distance is decreased. [26][27][28] Some pioneers also applied this method to prepare perovskite oxides. For example, Buscaglia et al 18 reported that BaCO 3 @TiO 2 core-shell precursor was prepared by precipitation of H 2 O 2 stabilized Ti 4+ solution, and pure BaTiO 3 nanoparticles were obtained at reduced temperature of 700 C, more than 150 C lower than the method using mechanical mixture as raw material.…”

Preparation mechanism and luminescence of Sr<sub>2</sub>SiO<sub>4</sub>: Eu phosphor from (Sr, Eu)CO<sub>3</sub>@SiO<sub>2</sub> core-shell precursor

“…Taking the application properties into account, the phosphors for LEDs should have suitable particle size (<10 μm) and narrow distribution besides high brightness and desirable color coordinates. So some efforts have made to improve the particle properties of Me 2 SiO 4 :Eu phosphor by softchemistry methods [11][12][13][14]. For instance, Chang and coauthors synthesized nanometer Sr 2 SiO 4 by employing SrCO 3 @SiO 2 core-shell precursor as the starting materials; however, the luminescent center Eu was not considered and doped into the Sr 2 SiO 4 host in their work [14].…”

“…So some efforts have made to improve the particle properties of Me 2 SiO 4 :Eu phosphor by softchemistry methods [11][12][13][14]. For instance, Chang and coauthors synthesized nanometer Sr 2 SiO 4 by employing SrCO 3 @SiO 2 core-shell precursor as the starting materials; however, the luminescent center Eu was not considered and doped into the Sr 2 SiO 4 host in their work [14]. In the previous work, we also developed a homogenous (Sr,Eu)CO 3 @SiO 2 core-shell precursor, in which (Sr,Eu)CO 3 represents the homogenous mixture of Sr 2+ and Eu 3+ carbonates [15].…”