Influence of pH values on the surface and properties of BCZT nanopowders synthesized via sol-gel auto-combustion method

Jaimeewong, Piyaporn; Promsawat, Methee; Jiansirisomboon, Sukanda; Watcharapasorn, Anucha

doi:10.1016/j.surfcoat.2016.03.091

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…The pH has a direct influence on the intensity of the combustion reaction, in addition to playing a key role in gauging the dissociation degree of the organic fuel and their affinity to chelate metal cations. The pH can impact a wide range of physicochemical properties, namely microstructure and morphology, crystallite and particle size, surface area, pore volume, and pore size [ 65 ]. Because a lack of control over the pH could lead to the precipitation of the metal ions through the formation of hydroxides or salts, the proper tuning of pH is of the essence.…”

Section: Resultsmentioning

confidence: 99%

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Rammal

Omanovic

2022

Molecules

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The impact of process conditions on the synthesis of NiMoO4 nanostructures using a solution combustion synthesis (SCS) method, in which agar powder and Ni(NO3)2 were utilized as fuel and as the oxidant, respectively, was thoroughly studied. The results show that the calcination temperature had a significant implication on the specific surface area, phase composition, particle size, band gap, and crystallite size. The influence of calcination time on the resulting physicochemical/structural/morphological properties of NiMoO4 nanostructures was found to be a major effect during the first 20 min, beyond which these properties varied to a lesser extent. The increase in the Ni/Mo atomic ratio in the oxide impacted the combustion dynamics of the system, which led to the formation of higher surface area materials, with the prevalence of the β-phase in Ni-rich samples. Likewise, the change in the pH of the precursor solution showed that the combustion reaction is more intense in the high-pH region, entailing major implications on the physicochemical properties and phase composition of the samples. The change in the fuel content showed that the presence of agar is important, as it endows the sample with a fluffy, porous texture and is also vital for the preponderance of the β-phase.

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Section: Resultsmentioning

confidence: 99%

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Rammal

Omanovic

2022

Molecules

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“…After that, the dielectric constant decreased due to phase transformation from the ferroelectric to nonferroelectric cubic phase. The Curie temperature ( T C ) of BCZT nanofibers is found to be 108.8 °C, which is higher than that of bulk ceramic powder (80–85 °C). , The electrospun fibers have diameters in the range of 80–250 nm with much smaller grain size (10–20 nm). The reduced grain size of the nanofibers causes a large grain boundary density, which relieves internal stress in materials due to sliding of the grain boundary.…”

Section: Resultsmentioning

confidence: 95%

“…BCZT fibers (sintered at 700 °C) showed a peak at 3452 cm –1 due to the stretching vibration of the O–H group. Also, peaks appeared at 664 and 733 cm –1 due to the stretching vibration of the M–O bonds. , …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Large Aspect Ratio Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ Superfine Fibers-Based Flexible Nanogenerator Device: Synergistic Effect on Curie Temperature, Harvested Voltage, and Power

Chary

Panda

Prasad

2017

Ind. Eng. Chem. Res.

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Large aspect ratio Ba0.85Ca0.15Zr0.1Ti0.9O3 (BZCT) nanofibers mat was prepared using the electro-spinning technique. Crystal structure analysis confirmed the existence of MPB between tetragonal and rhombohedra phases. The morphology study suggested the formation of discrete nanofibers having a diameter 80–250 nm. Dielectric studies were performed on sintered nanofibers and Curie temperature (T C) was measured at ∼108 °C, which showed a significantly improved T C than that for bulk BCZT particles. The sintered fibers mat was used for fabricating a flexible nanogenerator using room temperature vulcanized silicone elastomer. The open circuit peak voltage was measured ranging from 5.0 to 17.5 V. Peak voltage and power output were found at ∼2.68 V and ∼2.95 μW, respectively, under periodic tapping. The developed BCZT nanofibers mat-based nanogenerator may be applied in wireless microelectronics, energy harvesting devices, and self-powered sensors for structural health monitoring applications.

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“…Much less is known, however, about the critical role of processing on the properties of lead-free ceramics [3]. Recently, J.P. Praveen et al showed that, for a series of lead-free ceramics, the implementation of wet chemistry technologies results in a strong decrease in dielectric loss above Tc and a dramatic enhancement in electromechanical performance [4].…”

Section: Introductionmentioning

confidence: 99%

A Large Piezoelectric Strain Recorded in BCT Ceramics Obtained by a Modified Pechini Method

et al. 2020

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There is a strong need in the industry to develop lead-free piezoelectrics for sensors and actuators. Although these materials have become an important component of many electronic devices, it is very important for the industry to decarbonise ceramic technology, especially through the introduction of modern sintering technologies. Among the many piezoelectric compounds available, Calcium Barium Titanate (BCT) have been widely investigated because of its similar performance to lead-containing Lead Titanate Zirconate (PZT). In this paper, a modified Pechini method for obtaining ceramic Ba0.9Ca0.1TiO3 nano-powders is described. Deviation from the established procedure resulted in the precipitation of the solution or obtaining of a low-quality (poorly crystallized) product with numerous impurities. The samples of BCT materials were examined to find their ideal microstructures and structures; these factors were confirmed by their outstanding X-ray diffraction spectra and high piezoelectric constant values that are comparable to commercial lead-containing materials.

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Influence of pH values on the surface and properties of BCZT nanopowders synthesized via sol-gel auto-combustion method

Cited by 10 publications

References 17 publications

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Fabrication of Large Aspect Ratio Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ Superfine Fibers-Based Flexible Nanogenerator Device: Synergistic Effect on Curie Temperature, Harvested Voltage, and Power

A Large Piezoelectric Strain Recorded in BCT Ceramics Obtained by a Modified Pechini Method

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Influence of pH values on the surface and properties of BCZT nanopowders synthesized via sol-gel auto-combustion method

Cited by 10 publications

References 17 publications

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Part I: NiMoO4 Nanostructures Synthesized by the Solution Combustion Method: A Parametric Study on the Influence of Synthesis Parameters on the Materials’ Physicochemical, Structural, and Morphological Properties

Fabrication of Large Aspect Ratio Ba0.85Ca0.15Zr0.1Ti0.9O3 Superfine Fibers-Based Flexible Nanogenerator Device: Synergistic Effect on Curie Temperature, Harvested Voltage, and Power

A Large Piezoelectric Strain Recorded in BCT Ceramics Obtained by a Modified Pechini Method

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Product

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About

Fabrication of Large Aspect Ratio Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ Superfine Fibers-Based Flexible Nanogenerator Device: Synergistic Effect on Curie Temperature, Harvested Voltage, and Power