Peering into the Formation of Template-Free Hierarchical Flowerlike Nanostructures of SrTiO₃

Abstract

The development of efficient advanced functional materials is highly dependent on properties such as morphology, crystallinity, and surface functionality. In this work, hierarchical flowerlike nanostructures of SrTiO 3 have been synthesized by a simple template-free solvothermal method involving poly(vinylpyrrolidone) (PVP). Molecular dynamics simulations supported by structural characterization have shown that PVP preferentially adsorbs on {110} facets, thereby promoting the {100} facet growth. This interaction results in the formation of hierarchical flowerlike nanostructures with assembled nanosheets. The petal morphology is strongly dependent on the presence of PVP, and the piling up of nanosheets, leading to nanocubes, is observed when PVP is removed at high temperatures. This work contributes to a better understanding of how to control the morphological properties of SrTiO 3 , which is fundamental to the synthesis of perovskite-type materials with tailored properties.

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

“…Anderson Thesing et al fabricated SrTiO 3 using poly vinylpyrrolidone, which adsorbed on (110) facet, so promoting the growth of (100) facet. As a result of this interaction, a hierarchical flower-like SrTiO 3 nanostructure was formed (Thesing et al 2020). Additionally, Harsha Bantawal et al synthesized V-doped CaTiO 3 via solvothermal process with avoiding high-temperature annealing.…”

Efficient Electron Transfer across Strontium Titanate Decorated Graphene Oxide for High‐Performance Dye‐Sensitized Solar Cells and Photocatalytic Degradation of Dye and Antibiotic

“…[15] Strontium titanate (SrTiO 3 or STO) is one of the interesting materials having an n-type semiconducting nature with a cubic crystal structure (space group Pm3 m) with an excellent thermodynamic stability (À 160 to 2080 °C), high dielectric constant (300), better corrosion resistance, wide bandgap (3.2 eV) and higher flat band potential, etc. [16][17][18] Owing to these favourable properties, the STO can be employed as sensors, photocatalysts for water splitting, energy storage devices, electron transport layers in perovskite solar cells, and costeffective multitasking catalysts for condensation, hydrogenation, and amination reactions, etc. [19][20][21] However, STO as an intrinsic semiconductor has a typical issue with poor photovoltaic and photocatalytic activity due to lower quantum efficiency.…”