Long-range and short-range structures of cube-like shape SrTiO3 powders: microwave-assisted hydrothermal synthesis and photocatalytic activity

Abstract

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Low-temperature route to metal titanate perovskite nanoparticles for photocatalytic applications

“…However, in the Raman spectra of as-prepared MTiO 3 (Sr, Ba) five bands can be observed at 179, 305, 517, 715, and 806 cm -1 . Such modes appear, however, when crystal symmetry breaking occurs [21]. The band observed at 806 cm -1 may be attributed to the LO (longitudinal-optic)…”

A novel ozone gas sensor based on one-dimensional (1D) α-Ag2WO4 nanostructures

“…[42][43][44][45][46] Because of such properties, nanorods are potential candidates for practical applications as ozone gas sensors.…”

Insight into the Effects of Fe Addition on the Local Structure and Electronic Properties of SrTiO3

“…1 This structure is able to accommodate a large variety of atoms with different ionic radii and different valences in both the A and B sites 2−4 without destroying the original structure. Among the large family of perovskites, strontium titanate (SrTiO 3 , abbreviated STO) is an important semiconductor with highly valued properties, such as high static dielectric constant and good insulation, 5,6 luminescence properties, 7,8 and usefulness as an oxygen gas sensor, 9,10 photocatalyst, 11,12 or photoelectrode. 13 Electronic conduction in perovskites depends mainly on the crystal structure (e.g., type and number of ions, size, and symmetry and distortion of the unit cell) and the microstructure features of the sample (usually the higher the number of grain boundaries, the lower the conductivity).…”