Understanding sintering characteristics of ZnO nanoparticles by FIB-SEM three-dimensional analysis

Chen, Bin; Xia, Zhenbo; Lu, Kathy

doi:10.1016/j.jeurceramsoc.2013.04.026

Cited by 16 publications

(10 citation statements)

References 42 publications

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“…Then, vacuum was applied to eliminate air bubbles and solvent (TEOS). To obtain monolithic specimens, PDMS molds were used and detailed preparation process can be found elsewhere . Briefly, PDMS prepolymer (Sylgard 184; Dow Corning, Midland, MI) with base and curing agents at 10:1 ratio was cast on a silicon core, which was placed under a vacuum chamber and subjected to a pressure of 10 mTorr for 30 min to remove air bubbles, then moved into an oven at 100°C for 60 min to solidify the PDMS.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Micro‐/Mesoporous SiOC Bulk Ceramics

Lin

et al. 2015

J. Am. Ceram. Soc.

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Micro-/mesoporous SiOC bulk ceramics with high surface area and bimodal pore size distribution were prepared by pyrolysis of polysiloxane in argon atmosphere at 1100°C-1400°C followed by etching in hydrofluoric acid solution. Their thermal behaviors, phase compositions, and microstructures at different nano-SiO 2 filler contents and pyrolysis temperatures were investigated by XRD, SEM, DSC, and BET. The SiO 2 fillers and SiO 2 -rich clusters in the SiOC matrix act as pore-forming sites and can be etched away by HF. At the same time, the SiO 2 filler promotes SiOC phase separation during the pyrolysis. The filler content and pyrolysis temperature have important effects on phase compositions and microstructures of porous SiOC ceramics. The resulting porous SiOC bulk ceramic has a maximum specific surface area of 822.7 m 2 /g and an average pore size of 2.61 nm, and consists of free carbon, silicon carbide, and silicon oxycarbide phases.

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Section: Methodsmentioning

confidence: 99%

Preparation of Micro‐/Mesoporous SiOC Bulk Ceramics

Lin

et al. 2015

J. Am. Ceram. Soc.

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“…Electrical and optical properties of ZnO are mainly influenced by grain size. Grain growth of ZnO was successfully controlled using TSS [16,20,22,[74][75][76][77][78]. Zhang et al [20] and others [16] successfully sintered fully dense ZnO without grain growth at the final stage of sintering.…”

Section: Sintering Of Zinc Oxidementioning

confidence: 99%

Two-Step Sintering of Ceramics

Sutharsini¹,

Murugathas²,

RameshSingh³

2018

Sintering of Functional Materials

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Sintering is a critical phase in the production of ceramic bodies. By controlling the density and microstructure formation, sintering now emerged as a processing technology of ceramic materials. Tailoring the structural, mechanical, electrical, magnetic and optical properties is widening the application of ceramics in various fields. Recently, many advanced sintering methods have reported to fabricate ceramic materials with controlled properties. Two-stage sintering (TSS) is one of the simple and cost-effective methods to obtain near-theoretical density materials with controlled grain growth without adding any dopants. Many recent works have reported the use of TSS as a processing method to fabricate nanoceramics for various applications. With this background, this chapter reviews the advantages of TSS in ceramic preparation based on properties and materials and explores the future directions.

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“…The properties of ZnO are widely attributed to its particle size, the amount of the grains and grain boundaries (Aimable, Goure Doubi, Stuer, Zhao, & Bowen, 2017;QIN, SHAO, LIU, & WANG, 2005) and also the concentration of defects (B. Chen, Xia, & Lu, 2013;Lott et al, 2015) Thus, electrical and optical properties of ZnO have been improved by maintaining its nanometer-scale microstructure (Lee et al, 2016). The interest in nanostructured materials is growing due to the gain in several properties, such as optical, mechanical and catalytic, among others (Aimable et al, 2017;Phuah, Rheinheimer, Akriti, Dou, & Wang, 2021;Samavati et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Influence of the shaker mill in the properties of ZnO processed by high energy milling

Storion

Pallone

Giraldi

et al. 2021

RSD

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This work evaluates how the High Energy Ball Milling (HEBM) in a shaker mill influences the optical, physical, and microstructural properties of ZnO. The procedure also combines Fe inclusion from the grinding medium with particle size reduction. ZnO powder was milled by 1, 2, 3, 4, and 5 h, which resulted in a particle size reduction to the nanometric scale with a mean size of around 50 nm and a crystallite size reduction by three times when processed from 4 h. Milling has proven to be an efficient process for obtaining nanoparticles with an incredibly short processing time and changed the morphology of the particles from random to spherical shapes. Results also indicate the processing progressively expanded the ZnO hexagonal structure due to the imposed strain and Fe inclusion, which can help to decrease the bandgap and slow down the recombination rate of the electron-hole pairs, improving the photocatalysis activity. The optical results showed no additional band appeared due to milling processes and diminished the bandgap from 3.37 to 3.21 eV. Milling also led to an increase in the c value from 5.2076 to 5.2112 Å, which is one of the most important factors for improved antibacterial activity. HEBM has proved to be a suitable process for obtaining ZnO nanoparticles with properties useful for various applications.

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Understanding sintering characteristics of ZnO nanoparticles by FIB-SEM three-dimensional analysis

Cited by 16 publications

References 42 publications

Preparation of Micro‐/Mesoporous SiOC Bulk Ceramics

Preparation of Micro‐/Mesoporous SiOC Bulk Ceramics

Two-Step Sintering of Ceramics

Influence of the shaker mill in the properties of ZnO processed by high energy milling

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