Journal ArticleDOI
Synthesis of CeO2 or α–Mn2O3 nanoparticles via sol–gel process and their optical properties
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TLDR
In this article, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Transmission electron microscope (TEM), UV-vis absorption and Photoluminescence (PL) were characterized.Abstract:
Nanocrystalline cubic fluorite/bixbyite CeO2 or α–Mn2O3 has been successfully synthesized by using methanol as a solvent via sol–gel method calcined at 400 °C. The obtained products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), UV–vis absorption and Photoluminescence (PL) spectroscopy. TEM reveals that the as-synthesized ultra-fine samples consist of elliptical/spherical and sheet-like morphology of crystalline particles of 8/30 nm, which are weakly aggregated. Optical absorbance spectra reveal that the absorption of ceria in the UV region originates from the charge- transfer transition between the O2− (2p) and Ce4+ (4f) orbit in CeO2. However, α–Mn2O3 nanostructures with nearly pure band gap emission should be of importance for their applications as UV emitters.read more
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Plant-based green synthesis of metallic nanoparticles: scientific curiosity or a realistic alternative to chemical synthesis?
Jose R. Peralta-Videa,Yuxiong Huang,Jason G. Parsons,Lijuan Zhao,Laura Lopez-Moreno,Jose A. Hernandez-Viezcas,Jorge L. Gardea-Torresdey +6 more
TL;DR: The green synthesis has been proposed as an alternative to reduce the use of hazardous compounds and harsh reaction conditions in the production of metallic nanoparticles (MNPs) by using organic compounds, microbes, plants and plant-derived materials as reducing agents.
Journal ArticleDOI
Synthesis of g-C 3 N 4 /CeO 2 nanocomposites with improved catalytic activity on the thermal decomposition of ammonium perchlorate
TL;DR: In this paper, a novel g-C3N4/CeO2 nanocomposites were synthesized through a simple mixing-calcination method to catalyze the thermal decomposition of ammonium perchlorate (AP) by utilizing thermogravimetric and differential thermal analyses.
Journal ArticleDOI
Synthesis and biomedical applications of nanoceria, a redox active nanoparticle
TL;DR: The outcome of this review will improve the understanding about the different synthetic procedures and biomedical applications of nanoceria, which should, in turn, lead to the design of novel clinical interventions associated with various health disorders.
Journal ArticleDOI
Controllable synthesis and optical properties of nano-CeO2 via a facile hydrothermal route
TL;DR: In this article, the authors used ethanol/water mixtures with varied volume ratios from 0:1 to 1:0 in a facile hydrothermal process with CeCl 3 ⋅7H 2 O as cerium source and N 2 H 4 ⋆H 2O as mineralizer to control the morphology change from thin nanorod to short-thick nanorods, and then to nanoparticles.
Journal ArticleDOI
Crystal facet-dependent reactivity of α-Mn2O3 microcrystalline catalyst for soot combustion
TL;DR: In this article, a series of α-Mn2O3 micro crystals with different morphologies and crystal shapes were successfully prepared by hydrothermal method and has been investigated as potential soot combustion catalysts for the first time.
References
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Zinc oxide nanostructures: growth, properties and applications
TL;DR: In this paper, a review of various nanostructures of ZnO grown by the solid-vapour phase technique and their corresponding growth mechanisms is presented. And the application of nanobelts as nanosensors, nanocantilevers, field effect transistors and nanoresonators is demonstrated.
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Appraisal of Ce1−yGdyO2−y/2 electrolytes for IT-SOFC operation at 500°C
TL;DR: In this article, the authors evaluated thermodynamic and electrical conductivity data to select the most appropriate electrolyte composition for IT-SOFC operation at 500°C and found that the Gd 3+ ion is the preferred dopant, compared to Sm 3+ and Y 3+, at this temperature.
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Synthesis of layered LiMnO2 as an electrode for rechargeable lithium batteries
TL;DR: LiMnO2 as discussed by the authors is a new material, which is structurally analogous to LiCoO2, which has been much studied as a positive electrode material for rechargeable lithium batteries.
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In Vitro Cytotoxicity of Oxide Nanoparticles: Comparison to Asbestos, Silica, and the Effect of Particle Solubility†
Tobias J. Brunner,Peter Wick,Pius Manser,Philipp Spohn,Robert N. Grass,Ludwig K. Limbach,and Arie Bruinink,Wendelin J. Stark +7 more
TL;DR: While in vitro experiments may never replace in vivo studies, the relatively simple cytotoxic tests provide a readily available pre-screening method for nanomaterials in comparison to existing toxicological data.
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Cerium and yttrium oxide nanoparticles are neuroprotective.
TL;DR: It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress and that the neuroprotection is independent of particle size.