The thermal physical formation of ZnO nanoparticles and their morphology

Wu, Run; Xie, Changsheng; Xia, Hui; Hu, Junhui; Wang, Aihua

doi:10.1016/s0022-0248(00)00506-6

Cited by 84 publications

(38 citation statements)

References 15 publications

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“…At this H 2 O concentration, there is no clear evidence of any spurious phase. In the case of high water concentrations (50 %), in addition to ZnO, another compound was detected and identified as Zn 5 (OH) 8 Cl 2 ·H 2 O, simonkolleite. [25] It is noteworthy that the diffraction peaks for the samples with low concentrations of H 2 O are clearly wider, which provides evidence for the presence of small particles in the sediment.…”

Section: Resultsmentioning

confidence: 99%

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Electrochemical Synthesis of ZnO Nanoparticles

Starowicz

Stypuła

2008

Eur J Inorg Chem

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The anodic behaviour of zinc was investigated in ethanol solution containing LiCl and water. Zinc was polarised by using cyclic voltammetry and chronoamperometry techniques. During the course of the dissolution of zinc, a colloidal suspension of ZnO nanoparticles was obtained in 0.1 M LiCl/ethanol solutions that contain H 2 O. The suspension is formed only if water is present, and the rate of the process depends on the water content. Moreover, the concentration

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Section: Resultsmentioning

confidence: 99%

“…Until now, various techniques have been used for the preparation of ZnO particles, e.g. high-temperature hydrothermal synthesis, [5][6][7] laser heating [8] or the high-temperature decomposition method. [9] However, the high-temperature methods are unfavourable because of high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of ZnO Nanoparticles

Starowicz

Stypuła

2008

Eur J Inorg Chem

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“…Nanoparticles of ZnO have been prepared by physical methods, such as milling and grinding, (Shen 2006); by thermal evaporation of ZnO (Wang, 2004) or evaporation and oxidation of zinc (Wu et al, 2000); and by chemical solution synthesis routes such as hydrothermal synthesis (Suchanek, 2009;Baruah and Dutta 2009), sol-gel (Meulenkamp 1998;Mondelaers et al, 2002) and precipitation from both aqueous and non-aqueous solvents (Jézéquel et al, 1995, Hsieh et al, 2007. However, despite the wide variety of wet chemical methods, the majority of ZnO is produced in industry by gas phase synthesis through oxidation of Zn vapour (Auer et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles by flame spray pyrolysis and characterisation protocol

et al. 2013

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This paper reports detailed characterisation of a zinc oxide (ZnO) nanopowder synthesized by a flame spray pyrolysis method. Detailed characterisation of the powder was carried out following a protocol that aims to determine key physicochemical characteristics that may affect its toxicity. Analysis by X-ray diffraction, (XRD), transmission electron microscopy (TEM) and surface area measurements confirmed monophasic hexagonal wurtzite ZnO nanoparticles with a specific surface area of 59 m 2 /g. Histograms derived from TEM analysis are presented to illustrate the polydispersity within the sample; particles were elongated in the c-crystallographic direction, with average length ~ 23 nm and width ~14 nm.Dynamic light scattering (0.1 w/v % in deionised water, pH 7.4) revealed the particles were agglomerated with a modal secondary particle size of ~ 1.5 μm. Fourier transform infra-red spectroscopy and X-ray photoelectron spectroscopy indicated the presence of carbonate impurities on the surface of the ZnO nanoparticles.

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“…The evaporation and oxidation of elemental zinc at elevated temperature is the method of choice for the industrial production of ZnO. This method leads to inhomogeneous particle morphologies as well, [15,28] and details about processes during the gas-phase synthesis of metal oxide nanoparticles are still scarce.…”

Section: Introductionmentioning

confidence: 99%

Chemical Vapor Synthesis of Size‐Selected Zinc Oxide Nanoparticles

Polarz

Roy

Merz

et al. 2005

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156

108

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ZnO can be regarded as one of the most important metal oxide semiconductors for future applications. Similar to silicon in microelectronics, it is not only important to obtain nanoscale building blocks of ZnO, but also extraordinary purity has to be ensured. A new gas-phase approach to obtain size-selected, nanocrystalline ZnO particles is presented. The tetrameric alkyl-alkoxy zinc compound [CH 3 ZnOCH(CH 3 ) 2 ] 4 is chemically transformed into ZnO, and the mechanism of gas-phase transformation is studied in detail. Furthermore, the morphological genesis of particles via gas-phase sintering is investigated, and for the first time a detailed model of the gas-phase sintering processes of ZnO is presented. Various analytical techniques (powder XRD, TEM/energy-dispersive X-ray spectroscopy, magic-angle spinning NMR spectroscopy, FTIR spectroscopy, etc.) are used to investigate the structure and purity of the samples. In particular, the defect structure of the ZnO was studied by photoluminescence spectroscopy.

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The thermal physical formation of ZnO nanoparticles and their morphology

Cited by 84 publications

References 15 publications

Electrochemical Synthesis of ZnO Nanoparticles

Electrochemical Synthesis of ZnO Nanoparticles

Synthesis of ZnO nanoparticles by flame spray pyrolysis and characterisation protocol

Chemical Vapor Synthesis of Size‐Selected Zinc Oxide Nanoparticles

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