Mass production of Al2O3 and ZrO2 nanoparticles by hot-air spray pyrolysis

Manivasakan, Palanisamy; Karthik, A.; Rajendran, V.

doi:10.1016/j.powtec.2012.08.028

Cited by 30 publications

(16 citation statements)

References 15 publications

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“…ZrO 2 nanoparticles are prepared using a specially designed spray pyrolyser available in our laboratory. 26 It is well established that the prepared nanoparticles have spherical morphology with specific surface area 280 m 2 g −1 and an average particle size 5-25 nm.…”

Section: Methodsmentioning

confidence: 97%

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Dhineshbabu¹,

Manivasakan²,

Yuvakkumar³

et al. 2013

j nanosci nanotechnol

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In this present investigation, the colloidal silica and nano ZrO2 embedded silica solution were prepared using sol-gel method followed by the sonication process. The particle size was measured for the prepared silica sol with and without ZrO2 nanoparticles. The prepared nanoparticles were coated on the cotton fabric through pad dry method. The phase and functional group analysis of the cotton fabrics after coating reveals the presence of metal oxides on the surface. The surface morphology of the coated fabrics analysed using SEM shows that the nanoparticles were in spherical morphology with slight agglomerations. The element analysis confirms the presence of silica (SiO2) and ZrO2/SiO2 nanoparticles along with cellulose on the surface. The washing durability of the coated fabrics after 5th and 10th wash indicates that the nanoparticles were strongly adhered on the fabric surface. The burning performance of coated fabrics is in the order of ZrO2/SiO2 (19.5 s) > SiO2 (11.3 s) before and after wash; UV resistance of fabric was in the order of ZrO2/SiO2 > SiO2 > uncoated fabric. Cotton fabrics coated with ZrO2/SiO2 particles show better UV and flammability protection for textile applications.

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Section: Methodsmentioning

confidence: 97%

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Dhineshbabu¹,

Manivasakan²,

Yuvakkumar³

et al. 2013

j nanosci nanotechnol

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“…Due to the significant advantages of gamma phase, its synthesis is highly regarded. The high purity nanocrystalline alumina powders were synthesized as yet by variety methods such as precipitation, hot-air spray pyrolysis, sol-gel and hydrothermal [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Al(OH)3, Al2O3 Nanoparticles and Polymeric Nanocomposites

et al. 2015

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Applying of the most toxic halogenated and aromatic flame retardants is limited with respect to the environmental requirements. Nontoxic Al(OH) 3 nanoparticles were synthesized via a simple surfactant-free precipitation reaction at room temperature. The effect of various precipitation-agents on the morphology of the products was investigated. Al(OH) 3 nanoparticles were added to the polysulfone and poly styrene (PS) matrices. Electron microscope images show excellent dispersion of aluminium hydroxide in PS matrix. Nanoparticles appropriately enhanced both thermal stability and flame retardant property of the polymeric matrices. The enhancement of flame retardancy is due to endothermic decomposition of Al(OH) 3 that absorbs heat and simultaneously releases of water (makes combustible gases diluted and cold). Dispersed nanoparticles play the role of a barrier layer against flame, oxygen and polymer volatilization. Al(OH) 3 was converted to Al 2 O 3 and its photo-catalyst property in degradation three different organic dyes as pollutants was investigated.

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“…The precursor used in this article is an aqueous solution of ZrO(NO 3 ) 2 ÁxH 2 O, and the reaction equation is shown in Formula (5) [41] :…”

Section: Discussionmentioning

confidence: 99%

Enhancement of surface insulation properties of alumina/epoxy composites through ZrO₂ film sprayed by plasma atomization

et al. 2020

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Alumina/epoxy composites are widely used in the manufacture of basin insulators, but their surfaces tend to accumulate charges under the high-voltage direct current (HVDC), which induce the decline of surface insulating property. In this article, the modification method of depositing ZrO 2 film sprayed by plasma atomization was proposed to improve the surface insulation performance of the material. Argon was used as the plasma discharge gas, and ZrO (NO 3) 2 .xH 2 O was used as the zirconium source. The morphology, surface roughness and the element content of materials were measured, and the surface conductivity, flashover voltage, and charge characteristics of the treated samples were tested. The experimental results displayed that a zirconia film was formed on the epoxy resin surface, which restrain the accumulation of surface charges. The surface conductivity of the modified sample was improved by 3 to 4 orders of magnitude, and the flashover voltage was increased by 20%. Studies have shown that: ZrO 2 film sprayed by plasma atomization can improve the insulation performance of epoxy resin surface, and it provides an effective method for the surface modification of insulating materials.

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Mass production of Al2O3 and ZrO2 nanoparticles by hot-air spray pyrolysis

Cited by 30 publications

References 15 publications

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Synthesis and Characterization of Al(OH)3, Al2O3 Nanoparticles and Polymeric Nanocomposites

Enhancement of surface insulation properties of alumina/epoxy composites through ZrO₂ film sprayed by plasma atomization

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Mass production of Al2O3 and ZrO2 nanoparticles by hot-air spray pyrolysis

Cited by 30 publications

References 15 publications

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Enhanced Functional Properties of ZrO2/SiO2 Hybrid Nanosol Coated Cotton Fabrics

Synthesis and Characterization of Al(OH)3, Al2O3 Nanoparticles and Polymeric Nanocomposites

Enhancement of surface insulation properties of alumina/epoxy composites through ZrO2 film sprayed by plasma atomization

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Product

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Enhancement of surface insulation properties of alumina/epoxy composites through ZrO₂ film sprayed by plasma atomization