Effect of solvent on structure and optical properties of PZT nanoparticles prepared by sol–gel method, in infrared region

Zak, A. Khorsand; Majid, W.H. Abd.

doi:10.1016/j.ceramint.2010.10.020

Cited by 44 publications

(18 citation statements)

References 27 publications

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“…Nanoparticles exhibit narrow distribution and are almost spherical in shape. [2, 3,8,17]. Particle sizes observed by TEM agree with the significant broadening of peaks in Fig.…”

Section: Characterizationsupporting

confidence: 75%

“…PZT thin films prepared from ferroelectric materials have attracted attention with reference to their application in memory devices, electro-optic devices, sensors, actuators, etc. [2, [6][7][8][9]. It is well known that the performance of PZT ceramics is strictly dependent on their structural and microstructural properties, which can be tailored by controlling the processing parameters in specific compositions [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Romo

Páez-Sánchez

García-González

et al. 2015

J Sol-Gel Sci Technol

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The aim of this work was to synthesize lead zirconate titanate (PZT) nanopowder using a modified solgel processing method. PZT obtained by a sol-gel route using acetic acid had compositions in the morphotropic phase boundary (Ti/Zr, 53/47 and 45/55). All samples were annealed in air at 800°C and sintered at temperature above 1,000°C. Structure and morphology of the samples were determined and characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, dilation, densification and pyroelectric response. Results of X-ray diffraction on samples PZT showed a phase, but not a pyrochlore one, which we determined to be the best pyroelectric response. The samples presented high densification and had appropriate characteristics when used as pyroelectric sensors. Ceramics with a composition of 53/47 had the best pyroelectric response. An average particle size of 20 nm was measured using TEM.

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“…Nanoparticles exhibit narrow distribution and are almost spherical in shape. [2, 3,8,17]. Particle sizes observed by TEM agree with the significant broadening of peaks in Fig.…”

Section: Characterizationsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Romo

Páez-Sánchez

García-González

et al. 2015

J Sol-Gel Sci Technol

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show abstract

“…33 This corresponds to the TO and LO modes for the anatase phase. The absorption band at 1635 cm −1 was caused by a bending vibration of coordinated water as well as Ti‐OH …”

Section: Resultsmentioning

confidence: 99%

Ga₂O₃/TiO₂ semiconductors free of noble metals for the photocatalytic hydrogen production in a water/methanol mixture

Navarrete

Cipagauta‐Díaz

Gómez

2019

J of Chemical Tech & Biotech

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BACKGROUND: Hydrogen gas (H 2 ) has been identified as a potential energy source to reduce the dependence on fossil fuels. Titanium dioxide (TiO 2 ) semiconductor has been widely used in photocatalysis. Doping of different semiconductor oxides into TiO 2 has been documented to enhance its photocatalytic activity. In the present work, -Ga 2 O 3 /TiO 2 (TG) photocatalysts for H 2 production by water/methanol mixture decomposition have been synthesized by the sol-gel method varying the -Ga 2 O 3 content (3%, 5% and 10% w/w). The catalysts were characterized by X-ray diffraction, nitrogen adsorption, ultraviolet (UV)-visible diffuse reflectance, Fourier-transform infrared spectroscopy, scanning electron microscopy and photoluminescence analysis.RESULTS: An excellent activity for H 2 production under UV light (I 0 = 2.0 mW cm -2 , = 254 nm) was detected in TG composites. Experimental results indicated that the maximum H 2 production rate was 1217 mol g −1 during 5 h of reaction and the TG5 photocatalyst was observed to have a higher activity for photocatalytic H 2 evolution than pure Ga 2 O 3 and Pt/TiO 2 (TPt) test material. Moreover, a possible mechanism of charge separation in the composite under UV light irradiation was proposed. CONCLUSIONS:The H 2 improved activity of TG5 can be attributed to low charge recombination of the e − -h + pairs that improves the interfacial charge transfer, which is in agreement with the photoluminescence study.Particle size and pore structure Figure 3(a) shows the SEM image of TG5 material annealed at 500 ∘ C. The material exhibited spherical grains with uniform shape and size, whose average particle size ranged between 90 and 150 nm. To determine the actual size and morphology of the particles, the samples were also analyzed by TEM ( Fig. 3(b)). The TEM J Chem Technol Biotechnol 2019; 94: 3457-3465

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“…Among them, sol-gel process was undoubtedly one of effective methods for producing powders with good control over stoichiometry and homogeneity, yielding nano-sized particles and widely used in many other ceramics system [14][15][16][17][18]. In this work, the B 2 O 3 -doped MN ceramics were synthesized through the sol-gel method and its microwave dielectric properties and microstructures were also investigated.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

“…A 5 B 4 O 15 (A: Ba, Sr, Mg, Ca; B: Nb, Ta) dielectric ceramics had been investigated and found it had good microwave dielectric properties [1]. Therefore, Mg 5 Nb 4 O 15 (MN) compound with the isostructural structure of orthorhombic pseudobrookite was investigated widely [2] and its space group was orthorhombic D 2h 17 were ε r~1 1, Q·f ~37,350 GHz, and τ f ~-54 ppm/°C by solid state method [3]. Obviously high sintering temperatures would limit their applications and the reduction of sintering temperature was imperative M A N U S C R I P T…”

Section: Introductionmentioning

confidence: 99%

Effects of B 2 O 3 addition on sintering behavior and microwave dielectric properties of Mg 5 Nb 4 O 15 ceramics prepared by the sol–gel method

Mei

2015

Journal of Alloys and Compounds

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Effect of solvent on structure and optical properties of PZT nanoparticles prepared by sol–gel method, in infrared region

Cited by 44 publications

References 27 publications

Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Ga₂O₃/TiO₂ semiconductors free of noble metals for the photocatalytic hydrogen production in a water/methanol mixture

Effects of B 2 O 3 addition on sintering behavior and microwave dielectric properties of Mg 5 Nb 4 O 15 ceramics prepared by the sol–gel method

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Effect of solvent on structure and optical properties of PZT nanoparticles prepared by sol–gel method, in infrared region

Cited by 44 publications

References 27 publications

Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route

Ga2O3/TiO2 semiconductors free of noble metals for the photocatalytic hydrogen production in a water/methanol mixture

Effects of B 2 O 3 addition on sintering behavior and microwave dielectric properties of Mg 5 Nb 4 O 15 ceramics prepared by the sol–gel method

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Ga₂O₃/TiO₂ semiconductors free of noble metals for the photocatalytic hydrogen production in a water/methanol mixture