Search results for " Porous alumina membranes"

showing 2 items of 2 documents

Electrodeposition of CeO2 and Co-Doped CeO2 Nanotubes by Cyclic Anodization in Porous Alumina Membranes

2013

An anodic electrodeposition process is proposed to prepare CeO2 and Co-doped CeO2 nanotubes. Anodic alumina membrane is used as template and linear sweep voltammetry is employed to allow the formation of nanotubes without alumina dissolution. SEM micrographs showed large arrays of well defined and aligned NTs, which resulted to be crystalline soon after deposition according to XRD diffraction patterns and Raman Spectroscopy.

Fuel TechnologyMaterials scienceSettore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringAnodizingAlumina membranesMaterials ChemistryElectrochemistrynanotubes Electrodeposition anodic alumina membranePorosityCo dopedAlumina dissolution Anodic alumina membranes Anodic electrodeposition Anodizations Large arrays Linear sweep voltammetry Porous alumina membranes SEM micrographs
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Comments on 'formation and characterization of nanotubes of La(OH) 3 obtained using porous alumina membranes'

2010

New experimental evidence concerning the formation of La(OH)3 nanowires on anodic alumina membranes by cathodic polarization in 0.05 M lanthanum nitrate solution is provided to further support the conclusions previously reached in our work (Bocchetta et al 2007 Electrochem. Commun. 9 683-8) and recently criticized by González-Rovira et al (Nanotechnology 2008 19 495305). Some unconvincing aspects of the paper of González-Rovira et al, according to which the same electrochemical process should lead to the formation of hydroxycarbonate nanotubes, are also discussed.

Lanthanum nitrateMaterials scienceMechanical EngineeringAlumina membranesNanowireBioengineeringNanotechnologyCathodic polarizationGeneral ChemistryElectrochemistryAnodeCharacterization (materials science)Settore ING-IND/23 - Chimica Fisica ApplicataChemical engineeringLa(OH)3 nanowireelectrogeneration of base anodic alumina membraneMechanics of MaterialsAnodic alumina membranes Electrochemical process Experimental evidence Hydroxy carbonates Lanthanum nitrates Porous alumina membranesGeneral Materials ScienceElectrical and Electronic EngineeringPorosity
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