Hydrothermal synthesis of barium titanate nano/microrods and particle agglomerates using a sodium titanate precursor

Surmenev, Roman A.; Chernozem, Roman V.; Skirtach, André G.; Bekareva, A. S.; Leonova, L. A.; Mathur, Sanjay; Ivanov, Yu. F.

doi:10.1016/j.ceramint.2020.12.011

Cited by 23 publications

(16 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, Raman spectroscopy has been widely used to study the tetragonal‐cubic symmetry of BTO. [ 48 , 49 , 50 ] It is known that the sharp peak at ≈305 cm –1 indicates the dominant tetragonal phase. [ 48 , 50 ] Lee et al [ 49 ] observed that its relative intensity gradually decreased with a decrease in the degree of tetragonality of BTO.…”

Section: Resultsmentioning

confidence: 99%

“…[ 48 , 49 , 50 ] It is known that the sharp peak at ≈305 cm –1 indicates the dominant tetragonal phase. [ 48 , 50 ] Lee et al [ 49 ] observed that its relative intensity gradually decreased with a decrease in the degree of tetragonality of BTO. As can be seen in Figure 8 , the scattering intensities declined significantly in the Raman spectra for the spent catalyst compared to the initial (fresh) catalyst, confirming the particle size reduction due to cavitation events produced by the ultrasound.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

High Efficiency Water Splitting using Ultrasound Coupled to a BaTiO₃ Nanofluid

et al. 2022

View full text Add to dashboard Cite

To date, a number of studies have reported the use of vibrations coupled to ferroelectric materials for water splitting. However, producing a stable particle suspension for high efficiency and long-term stability remains a challenge. Here, the first report of the production of a nanofluidic BaTiO 3 suspension containing a mixture of cubic and tetragonal phases that splits water under ultrasound is provided. The BaTiO 3 particle size reduces from approximately 400 nm to approximately 150 nm during the application of ultrasound and the fine-scale nature of the particulates leads to the formation of a stable nanofluid consisting of BaTiO 3 particles suspended as a nanofluid. Long-term testing demonstrates repeatable H 2 evolution over 4 days with a continuous 24 h period of stable catalysis. A maximum rate of H 2 evolution is found to be 270 mmol h -1 g -1 for a loading of 5 mg l -1 of BaTiO 3 in 10% MeOH/H 2 O. This work indicates the potential of harnessing vibrations for water splitting in functional materials and is the first demonstration of exploiting a ferroelectric nanofluid for stable water splitting, which leads to the highest efficiency of piezoelectrically driven water splitting reported to date.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

High Efficiency Water Splitting using Ultrasound Coupled to a BaTiO₃ Nanofluid

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The main advantage of this method is that the experimental procedure is less complex and uses cheaper starting products than the Sol-Gel method. The main disadvantage of the hydrothermal method is that the titanates synthesized crystallize, mostly, in the metastable cubical phase which does not exhibit ferroelectric properties [ 37 , 38 , 39 , 40 ]. On the other hand, the use of water as reaction medium can also induce the incorporation of OH species to the BaTiO 3 structure, which in turn leads to defects in the network [ 32 , 41 ].…”

Section: Synthesis Of Perovskitesmentioning

confidence: 99%

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Navas

Fuentes

Castro‐Alvarez

et al. 2021

Gels

149

View full text Add to dashboard Cite

Sol-Gel is a low cost, well-established and flexible synthetic route to produce a wide range of micro- and nanostructures. Small variations in pH, temperature, precursors, time, pressure, atmosphere, among others, can lead to a wide family of compounds that share the same molecular structures. In this work, we present a general review of the synthesis of LaMnO3, SrTiO3, BaTiO3 perovskites and zinc vanadium oxides nanostructures based on Sol-Gel method. We discuss how small changes in the parameters of the synthesis can modify the morphology, shape, size, homogeneity, aggregation, among others, of the products. We also discuss the different precursors, solvents, working temperature, reaction times used throughout the synthesis. In the last section, we present novel uses of Sol-Gel with organic materials with emphasis on carbon-based compounds. All with a perspective to improve the method for future applications in different technological fields.

show abstract

“…The material exhibited excellent high-frequency absorption and is a promising microwave-absorbing material. Surmenev et al 23 prepared one-dimensional, nano/micron-sized, rod-shaped BaTiO 3 by the hydrothermal method and found that BaTiO 3 with various morphologies, sizes, and phase compositions could be prepared by adjusting the temperature, time, and alkalinity of the hydrothermal process.…”

Section: Introductionmentioning

confidence: 99%