Synthesis and Characterization of (Zn,Cd)TiO₃ by a Modified Sol–Gel Method

Abstract

Ilmenite‐type (Zn1−xCdx)TiO3 (0≤x≤0.15 and 0.8≤x≤1.0) was synthesized by a modified sol–gel route including the Pechini process via two‐step heat treatments. The thermal stability of (Zn1−xCdx)TiO3 depended on the amount of cadmium content. The as‐synthesized (Zn1−xCdx)TiO3 (0≤x≤0.15 and 0.8≤x≤1.0) showed higher thermal stability than that of ZnTiO3. The variation of the dielectric constant of all synthesized (Zn1−xCdx)TiO3 samples for all measurement frequencies showed a similar tendency. The dielectric constant of each (Zn1−xCdx)TiO3 sample decreased first with increasing frequencies and then increased slightly when the frequency was up to 107 Hz. Moreover, the dielectric loss tangent of all synthesized (Zn1−xCdx)TiO3 samples for all measurement frequencies also changed in similar patterns. The dielectric loss tangent decreased with increasing measurement frequencies. The microwave dielectric properties of (Zn1−xCdx)TiO3 were changed with the cadmium doping content in the range of microwave frequency.

Sol–gel synthesis and characterization of lead-free LNKN nanocrystalline powder

“…The sol-gel method has been extensively used to prepare single-phase nanocrystalline powder [6,7]. In contrast with other techniques, the sol-gel process has shown considerable advantages, including excellent chemical stoichiometry, compositional homogeneity and lower crystallization temperature due to the mixing of liquid precursors on the molecular level.…”

Zinc titanium glycolate acetate hydrate and its transformation to zinc titanate microrods: synthesis, characterization and photocatalytic properties

“…It thermally decomposed into different crystallographic phase of ZnO-TiO 2 system from phase-pure Zn 2 Ti 3 O 8 (cubic, defect-spinel type, porous microrods), then to rutile TiO 2 supported ZnTiO 3 (hexagonal, ilmenite-type, porous microrods) and nally to rutile TiO 2 supported Zn 2 TiO 4 (cubic, spinel-type, microcrystallites). Of particular interest is ZnTiO 3 as promising dielectric materials for capacitors or microwave devices, [24][25][26][27][28][29][30][31] gas sensors, 32 paint pigments, 27,33 and novel luminescent host. 24,[34][35][36] Zn 2 TiO 4 was attractive as regenerable sorbents for catalytic desulphurization and dehydrogenation of hot gas.…”

Synthesis, characterization, and morphological control of Na1/2Bi1/2Cu3Ti4O12 through modify sol–gel method

“…Furthermore, the strong absorptions bond at 620 cm -1 is attributed to the stretching of Ti-O. The sharp absorption band appearing at 1114 cm -1 can be assigned to the C-O group [21]. In recent years, there has been considerable interest in control the shape and particle size of nanostructures through the control reaction parameters thanks to the fact that properties of nanostructures are highly depend on their particle size and shape; therefore, we performed several experiments to investigate the effect of surfactants such as SDS, CTAB, PVP, and PVA and chelating agent on the morphology and particle size of the Na 1/2 Bi 1/2 Cu 3 Ti 4 O 12 (BNCTO) nanostructures.…”