Dopant induced hollow BaTiO3 nanostructures for application in high performance capacitors

Lin, Meng‐Fang; Thakur, Vijay Kumar; Tan, Eu Jin; Lee, Pooi See

doi:10.1039/c1jm12429c

Cited by 113 publications

(66 citation statements)

References 37 publications

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“…Another possible route is the development of nanocomposite materials [4]; both fillers with high permittivity, as e.g. BaTiO 3 [8][9][10][11][12][13], and conducting fillers, as metal nanoparticles and graphite nanosheets, which can form percolative composites [14,15], have been added to PVDF and its copolymers.…”

Section: Introductionmentioning

confidence: 99%

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

et al. 2014

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and their thermal, viscoelastic and dielectric properties were investigated. When surface modified BaTiO 3 was used, it was possible to decrease both the viscoelastic and the dielectric losses of highly filled solvent cast films, while their storage modulus and relative permittivity either increased or remained equal, owing to reduced porosity and improved matrix-filler compatibility. The effect of BaTiO 3 surface modification on the morphology of compression molded films was less marked, leading to unchanged viscoelastic properties, and lower permittivity and dielectric losses. For all composites the frequency dependency of the dielectric properties at low frequencies was suppressed with modified BaTiO 3 .

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Section: Introductionmentioning

confidence: 99%

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

et al. 2014

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“…6,7,14,15 Most previous studies on the size effect in BaTiO 3 were focused on nominally bare particles, polycrystalline ceramics or even BaTiO 3 /polymer composites. [19][20][21][22][23][24] For comparison, micron-sized BaTiO 3 powder was also prepared via the solid-state reaction approach by reacting stoichiometric amounts of TiO 2 (purity 99.99 wt.%) and BaCO 3 (purity 99.9 wt.%) at 1373 K for 6 h.…”

Section: Introductionmentioning

confidence: 99%

Structure evolution and dielectric behavior of polystyrene-capped barium titanate nanoparticles

et al. 2012

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Polystyrene-capped barium titanate (BaTiO3) nanoparticles with sizes of 11 nm and 27 nm were prepared using amphiphilic star-like diblock copolymer templates. The crystal structure evolution of these nanoparticles over a wide temperature range (10-428 K) was investigated by powder X-ray diffraction. The Rietveld refinement indicates that the abrupt structural transitions observed in micron-sized powders become broad as particle size is reduced to a few tens of nanometers. The orthorhombic phase (Amm2) is observed in the range of 10-388 K, coexisting with the rhombohedral phase (R3c) at lower temperatures and with the tetragonal phase (P4mm) at higher temperatures. At room temperature (300 K), polystyrene-capped BaTiO3 nanoparticles, both 11 and 27 nm sizes, primarily adopt the tetragonal phase, transforming to the cubic phase ( Pm3m) at 398 K during heating. The phase evolution of the nanoparticles correlates well with their dielectric behavior. With the Landauer-Bruggeman effective approximation, the dielectric properties at room temperature for the BaTiO3 core were calculated and the results are in agreement with the size effect of BaTiO3 nanocrystals. Keywords Ames Laboratory Disciplines Ceramic Materials | Thermodynamics | Tribology CommentsThis is a manuscript of an article from Journal of Materials Chemistry 22, 23944-23951 (2012 Abstract Polystyrene-capped barium titanate (BaTiO 3 ) nanoparticles with sizes of 11 nm and 27 nm were prepared using amphiphilic star-like diblock copolymer templates. The crystal structure evolution of these nanoparticles over a wide temperature range (10-428 K) was investigated by powder X-ray diffraction. The Rietveld refinement indicates that the abrupt structural transitions observed in micron-sized powders become broad as particle size is reduced to a few tens of nanometers. The orthorhombic phase (Amm2) is observed in the range of 10-388 K, coexisting with the rhombohedral phase (R3c) at lower temperatures and with the tetragonal phase (P4mm) at higher temperatures. At room temperature (300 K), polystyrene-capped BaTiO 3 nanoparticles, both 11 and 27 nm sizes, primarily adopt the tetragonal phase, transforming to the cubic phase ( m Pm3 ) at 398 K during heating. The phase evolution of the nanoparticles correlates well with their dielectric behavior. With the Landauer-Bruggeman effective approximation, the dielectric properties at room temperature for the BaTiO 3 core were calculated and the results are in agreement with the size effect of BaTiO 3 nanocrystals. Table of contents entryPolystyrene capping preserves ferroelectricity in BaTiO 3 nanoparticles with a diameter of 11 nm and stabilizes the orthorhombic polar phase.3

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“…In the recent years, nanotechnology has become recognized as one of the most appealing area for technology development [55,56]. Nanotechnology is a science of manipulating materials at nanoscale ranging from 1 to 100 nm.…”

Section: Chitosan-based Nanocompositesmentioning

confidence: 99%

A Review on Bionanocomposites Based on Chitosan and Its Derivatives for Biomedical Applications

El‐Sherbiny

Elbaz

2015

Advanced Structured Materials

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Bionanocomposites are emerging nanostructure hybrid materials composed of natural polymers and inorganic solids. Bionanocomposites became a subject of intensive research owing to their inherent properties such as nontoxicity, biocompatibility, biodegradability as well as their improved structural and functional properties. Among these bionanocomposites, chitosan-based nanocomposites have attracted a great deal of attention especially in biomedical field. Globally, chitosan is the second most bountiful natural polymer following cellulose. Chitosan is a biocompatible and biodegradable polymer possessing unique structural, chemical, and biological properties. The last decade has witnessed enormous multidisciplinary research focused on improving the properties of chitosan and its derivatives. As a result, several chitosan-based nanocomposites with enhanced physical and chemical properties have been developed in eco-friendly and cost-effective manner. This chapter provides an overview on different aspects of chitosan including its properties and modifications, and focuses on chitosan-based nanocomposites. Important biomedical applications of chitosan-based nanocomposites are also discussed in this chapter including tissue engineering, wound healing, tissue regeneration, drug delivery, and biosensors.

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Dopant induced hollow BaTiO3 nanostructures for application in high performance capacitors

Cited by 113 publications

References 37 publications

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

Structure evolution and dielectric behavior of polystyrene-capped barium titanate nanoparticles

A Review on Bionanocomposites Based on Chitosan and Its Derivatives for Biomedical Applications

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