Special Issue "Nanostructured Oxide Crystals"

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A special issue of Crystals (ISSN 2073-4352).

Deadline for manuscript submissions: closed (30 June 2015)

Special Issue Editor

Guest Editor
Dr. Ramesh K. Guduru

College of Engineering and Computer Science, Department of Mechanical Engineering, University of Michigan – Dearborn, 4901 Evergreen Road, 1279 HPEC, Dearborn, Michigan 48128, USA
Website | E-Mail
Interests: nanomaterials, energy materials (batteries and supercapacitors), advanced materials manufacturing, sensors, mechanical behavior of materials, nanocrystalline materials, materials characterization, thermal spray coatings, structure-property correlation studies

Special Issue Information

Submission

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Keywords

  • Energy Storage
  • Batteries
  • Synthesis
  • Sensors
  • Catalysts
  • Crystal Growth
  • Functional Crystals

Published Papers (2 papers)

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Research

Open AccessArticle Nickel-Doped Ceria Nanoparticles: The Effect of Annealing on Room Temperature Ferromagnetism
Crystals 2015, 5(3), 312-326; doi:10.3390/cryst5030312
Received: 30 June 2015 / Revised: 21 July 2015 / Accepted: 17 August 2015 / Published: 21 August 2015
Cited by 4 | PDF Full-text (1775 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the
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Nickel-doped cerium dioxide nanoparticles exhibit room temperature ferromagnetism due to high oxygen mobility within the doped CeO2 lattice. CeO2 is an excellent doping matrix as it can lose oxygen whilst retaining its structure. This leads to increased oxygen mobility within the fluorite CeO2 lattice, leading to the formation of Ce3+ and Ce4+ species and hence doped ceria shows a high propensity for numerous catalytic processes. Magnetic ceria are important in several applications from magnetic data storage devices to magnetically recoverable catalysts. We investigate the effect doping nickel into a CeO2 lattice has on the room temperature ferromagnetism in monodisperse cerium dioxide nanoparticles synthesised by the thermal decomposition of cerium(III) and nickel(II) oleate metal organic precursors before and after annealing. The composition of nanoparticles pre- and post-anneal were analysed using: TEM (transmission electron microscopy), XPS (X-ray photoelectron spectroscopy), EDS (energy-dispersive X-ray spectroscopy) and XRD (X-ray diffraction). Optical and magnetic properties were also studied using UV/Visible spectroscopy and SQUID (superconducting interference device) magnetometry respectively. Full article
(This article belongs to the Special Issue Nanostructured Oxide Crystals)
Open AccessArticle Controlled Deposition of Tin Oxide and Silver Nanoparticles Using Microcontact Printing
Crystals 2015, 5(1), 116-142; doi:10.3390/cryst5010116
Received: 2 October 2014 / Accepted: 4 February 2015 / Published: 13 February 2015
Cited by 2 | PDF Full-text (30112 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
This report describes extensive studies of deposition processes involving tin oxide (SnOx) nanoparticles on smooth glass surfaces. We demonstrate the use of smooth films of these nanoparticles as a platform for spatially-selective electroless deposition of silver by soft lithographic stamping. The
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This report describes extensive studies of deposition processes involving tin oxide (SnOx) nanoparticles on smooth glass surfaces. We demonstrate the use of smooth films of these nanoparticles as a platform for spatially-selective electroless deposition of silver by soft lithographic stamping. The edge and height roughness of the depositing metallic films are 100 nm and 20 nm, respectively, controlled by the intrinsic size of the nanoparticles. Mixtures of alcohols as capping agents provide further control over the size and shape of nanoparticles clusters. The distribution of cluster heights obtained by atomic force microscopy (AFM) is modeled through a modified heterogeneous nucleation theory as well as Oswald ripening. The thermodynamic modeling of the wetting properties of nanoparticles aggregates provides insight into their mechanism of formation and how their properties might be further exploited in wide-ranging applications. Full article
(This article belongs to the Special Issue Nanostructured Oxide Crystals)
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