Microemulsion mediated synthesis of zinc-oxide nanoparticles for varistor studies

Hingorani, S.; Pillai, V.; Kumar, Purushottam; Multani, M.S.; Shah, Dinesh O.

doi:10.1016/0025-5408(93)90178-g

Cited by 200 publications

(110 citation statements)

References 13 publications

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“…These include in situ synthesis of nanoparticles of AgC1 [881 and AgBr [57]; and microemulsion mediated synthesis of highly dense and microhomogeneous Y-Ba-Cu-O (123) and B-Pb-Sr-Ca-Cu-O (2223) high temperature ceramic superconductors [89][90][91], high coercivity barium ferrite for high-density perpendicular recording [92,93], superparamagnetic y-Fe203 nanoparticles [941 and zinc oxide based varistors [95]. The synthesis of these materials and their structure and properties are described in the following sections.…”

Section: Particle Synthesis In Microemulsionsmentioning

confidence: 99%

Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors

Pillai

Kumar

Hou

et al. 1995

Advances in Colloid and Interface Science

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249

121

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Section: Particle Synthesis In Microemulsionsmentioning

confidence: 99%

Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors

Pillai

Kumar

Hou

et al. 1995

Advances in Colloid and Interface Science

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249

121

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“…One-dimensional nanostructures exhibit interesting electronic and optical properties due to their low dimensionality leading to quantum confinement effects. The novel properties of nanoscale zinc oxide particles have found applications in a variety of applications such as luminescence [1][2][3], varistors [4,5], solar cells [6], gas sensors [7,8]. Many of the synthetic approaches such as sol-gel method [13], co-precipitation [12], hydrothermal method [14], microwave synthesis [9][10][11], and thermal evaporation method [15] have been used for the preparation of ZnO powders.…”

Section: Introductionmentioning

confidence: 99%

Multiple-layered structure of obelisk-shaped crystalline nano-ZnO prepared by sol–gel route

2015

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Zinc oxide nanopowders were synthesized by the simple sol-gel method from an ethanol solution of zinc nitrate hexahydrate. Structural and surface morphological investigations were carried out using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible (UV-Vis) spectrophotometry analyses. XRD pattern showed that the zinc oxide nanoparticles exhibited hexagonal wurtzite structure. A multiple-layered structure of obelisk-shaped ZnO nanoparticles was achieved after calcinations. The average particle size of ZnO was around 20 nm as estimated by direct HRTEM observation. The size of sphere-like shaped ZnO nanoparticles was measured in the range of 20-80 nm and the size of pyramid-like shaped annealed samples was achieved in the range of 40-100 nm with less agglomeration. The energy dispersive spectroscopy spectrum showed peaks of zinc and oxygen. The sharp peaks in FTIR spectrum determined the Zn-O stretching and absorbance peak of UV-Vis spectrum showed the wide bandgap energy of 3.35 eV.

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“…Various preparation methods of ZnO nanoparticles [16,17,18,19,20] and their size dependent electronic [21] and optical [22] …”

Section: Introductionmentioning

confidence: 99%

Photoactive materials prepared by homogeneous hydrolysis with thioacetamide: Part 2—TiO2/ZnO nanocomposites

Houšková

Štengl

Bakardjieva

et al. 2008

Journal of Physics and Chemistry of Solids

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To cite this version:Vendula Houšková, V. Václav Štengl, Snejana Bakardjieva, Nataliya Murafa. Photoactive materials prepared by homogeneous hydrolysis with thioacetamide: Part 2 -TiO/ZnO nanocomposites. Journal of Physics and Chemistry of Solids, Elsevier, 2009, 69 (7) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract: Photocatalytic active TiO 2 /ZnO composite was prepared by homogeneous hydrolysis of mixture of titanium oxo-sulphate and zinc sulphate in aqueous solutions with thioacetamide and subsequent annealing at temperature of 600 °C. The prepared samples were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), High resolution transmission microscopy (HRTEM). The nitrogen adsorption-desorption was used for surface area (BET) and porosity determination. The photoactivity of the prepared TiO 2 /ZnO samples was assessed by the photocatalytic decomposition of Orange II dye in aqueous slurry under irradiation of 254 nm and 365 nm wavelength. Under the same conditions, the photocatalytic activity of a commercially available photocatalyst (Degussa P25), the pure anatase TiO 2 nanoparticles and cubic ZnO were examined. A c c e p t e d m a n u s c r i p t

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Microemulsion mediated synthesis of zinc-oxide nanoparticles for varistor studies

Cited by 200 publications

References 13 publications

Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors

Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors

Multiple-layered structure of obelisk-shaped crystalline nano-ZnO prepared by sol–gel route

Photoactive materials prepared by homogeneous hydrolysis with thioacetamide: Part 2—TiO2/ZnO nanocomposites

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