Searched for: collection%253Air
(1 - 20 of 201)

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Tabish, A.N. (author), Patel, H.C. (author), Mani, A. (author), Schoonman, J. (author), Aravind, P.V. (author)
In this study, with the motivation of elucidating the effect of H<sub>2</sub>S and HCl on solid oxide fuel cell anodes, nickel and ceria pattern anodes are prepared on yttrium-stabilized zirconia electrolyte, and the effect of H<sub>2</sub>S and HCl on their performance is tested using electrochemical impedance spectroscopy. However, it has...
journal article 2022
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Law, Robert (author), Christoffersen, Poul (author), Hubbard, Bryn (author), Doyle, Samuel H. (author), Chudley, Thomas R. (author), Schoonman, Charlotte M. (author), Bougamont, Marion (author), des Tombe, B.F. (author), Schilperoort, B. (author), Kechavarzi, Cedric (author), Booth, Adam (author), Young, Tun Jan (author)
Measurements of ice temperature provide crucial constraints on ice viscosity and the thermodynamic processes occurring within a glacier. However, such measurements are presently limited by a small number of relatively coarse-spatial-resolution borehole records, especially for ice sheets. Here, we advance our understanding of glacier...
journal article 2021
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Tabish, A.N. (author), Patel, H.C. (author), Schoonman, J. (author), Aravind, P.V. (author)
Using the Nernst-Planck-Poisson model and a detailed reaction mechanism, we studied the hydrogen electrochemical oxidation on a ceria anode. Resistances caused by surface kinetics, and bulk transport of oxide-ion vacancies and electrons are computed individually to identify the dominant resistive process. The effect of operating conditions...
journal article 2018
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Pop, Aniela (author), Manea, Florica (author), Flueras, Adriana (author), Schoonman, J. (author)
Monitoring of pesticide residues in food, beverages, and the environment requires fast, versatile, and sensitive analyzing methods. Direct electrochemical detection of pesticides could represent an efficient solution. Adequate electrode material, electrochemical technique, and optimal operation parameters define the detection method for...
journal article 2017
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Ardelean, Magdalena (author), Pode, Rodica (author), Schoonman, J. (author), Pop, Aniela (author), Manea, Florica (author)
The electrochemical methods-based protocol for simultaneous detection of tetracycline (TC) from antibiotics class and fluoxetine (FXT) from anti-depressive pharmaceuticals class, which belongs to emerging pollutants from water, was developed in this study using carbon nanofiber-epoxy composite electrode (CNF). The electrochemical behaviour of...
journal article 2017
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Jakab, Agnes (author), Pode, Rodica (author), Pop, Aniela (author), Schoonman, J. (author), Orha, Corina (author), Manea, Florica (author)
Three types of composite electrode materials, i.e. carbon nanotubes-epoxy (CNT), zeolite-carbon nanotubes-epoxy (ZCNT) and TiO<sub>2</sub>-modified zeolite-carbon nanotubes-epoxy (TiZCNT), were synthesized, morphologically and electrically characterized, and tested in the photoelectrodegradation of pentachlorophenol (PCP) from water. The...
journal article 2017
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Motoc, Sorina (author), Manea, F. (author), Iacob, Adriana (author), Martinez Joaristi, A.E. (author), Gascon, Jorge (author), Pop, A.C. (author), Schoonman, J. (author)
In this study, the detection protocols for the individual, selective, and simultaneous determination of ibuprofen (IBP) and diclofenac (DCF) in aqueous solutions have been developed using HKUST-1 metal-organic framework-carbon nanofiber composite (HKUST-CNF) electrode. The morphological and electrical characterization of modified composite...
journal article 2016
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Van Geenhuizen, M.S. (author), Schoonman, J. (author), Reinders, A.H.M.E. (author)
Places of large potentials of sustainable energy production and places of energy consumption are often very different and separated by large distances across the globe. This paper first discusses potentials of solar technology in terms of global availability using PV technology and actual energy production. Solar energy is widely under-used and...
conference paper 2012
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Manea, F. (author), Motoc, S. (author), Pop, A. (author), Remes, A. (author), Schoonman, J. (author)
The aim of this study is to prepare and characterize two types of silver-functionalized carbon nanofiber (CNF) composite electrodes, i.e., silver-decorated CNF-epoxy and silver-modified natural zeolite-CNF-epoxy composite electrodes suitable for ibuprofen detection in aqueous solution. Ag carbon nanotube composite electrode exhibited the best...
journal article 2012
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Van Geenhuizen, M.S. (author), Schoonman, J. (author), Reinders, A.H.M.E. (author)
Places of large potentials of sustainable energy production and places of energy consumption are often very different and separated by large distances across the globe. This paper first discusses potentials of solar technology in terms of global availability using PV technology and actual energy production. Solar energy is widely under-used and...
conference paper 2012
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Pop, A. (author), Manea, F. (author), Orha, C. (author), Motoc, S. (author), Llinoiu, E. (author), Vaszilcsin, N. (author), Schoonman, J. (author)
The aim of this study was to prepare three types of multiwall carbon nanotubes (CNT)-based composite electrodes and to modify their surface by copper electrodeposition for nonenzymatic oxidation and determination of glucose from aqueous solution. Copper-decorated multiwall carbon nanotubes composite electrode (Cu/CNT-epoxy) exhibited the highest...
journal article 2012
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Remes, A. (author), Pop, A. (author), Manea, F. (author), Baciu, A. (author), Picken, S.J. (author), Schoonman, J. (author)
The aim of this study was the preparation, characterization, and application of a multi-wall carbon nanotubes-epoxy composite electrode (MWCNT-EP) with 25%, wt. MWCNTs loading for the voltammetric/amperometric determination of pentachlorophenol (PCP) in aqueous solutions. The structural and morphological aspects of the MWCNT-EP composite...
journal article 2012
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Yáng, Z. (author), Harvey, A.S. (author), Infortuna, A. (author), Schoonman, J. (author), Gauckler, L.J. (author)
Bulk BaxSr1 - xCoyFe1 - yO3 - dBaxSr1?xCoyFe1?yO3? compositions (BSCF) were synthesized by the solid-state reaction method. The electrical conductivity of ceramic bars was measured using a dc four-probe method as a function of temperature in air up to 970 °C. All compositions showed thermally activated p-type semi-conductivity up to ~450 °C and...
journal article 2010
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Aravind, P.V. (author), Ouweltjes, J.P. (author), Schoonman, J. (author)
journal article 2009
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Ghimbeu, C.M. (author), Lumbreras, M. (author), Schoonman, J. (author), Siadat, M. (author)
Semiconductor metal oxide films of copper-doped tin oxide (Cu-SnO2), tungsten oxide (WO3) and indium oxide (In2O3) were deposited on a platinum coated alumina substrate employing the electrostatic spray deposition technique (ESD). The morphology studied with scanning electron microscopy (SEM) and atomic force microscopy (AFM) shows porous...
journal article 2009
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Aravind, P.V. (author), Ouweltjes, J.P. (author), Schoonman, J. (author)
Electrochemical impedance measurements were carried out on symmetrical nickel/gadolinia-doped ceria test cells. For H2, N2, and H2O mixtures, the diffusion length obtained based on the impedance measurements is on the order of centimeters. This high value of the diffusion length is attributed to the flow field in the reactor. It is suggested...
journal article 2009
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Manea, F. (author), Pop, A. (author), Radovan, C. (author), Malchev, P.G. (author), Bebeselea, A. (author), Burtica, G. (author), Picken, S.J. (author), Schoonman, J. (author)
In this paper, a modified expanded graphite composite electrode based on natural zeolitic volcanic tuff modified with silver (EG-Ag-Z-Epoxy) was developed. Cyclic voltammetry measurements revealed a reasonably fast electron transfer and a good stability of the electrode in 0.1 M NaOH supporting electrolyte. This modified electrode exhibited...
journal article 2008
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Hofhuis, J. (author), Schoonman, J. (author), Goossens, A. (author)
Time-of-Flight (TOF) measurements have been performed on n-type TiO2/p-type CuInS2 heterojunctions. The TiO2 film thickness has been varied between 200 and 400 nm, while the CuInS2 film thickness has been fixed at 500 nm. The TOF response can be accurately modeled, if the potential drop across the p-n heterojunction with a large density of...
journal article 2008
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Corb, I. (author), Manea, F. (author), Radovan, C. (author), Pop, A. (author), Burtica, G. (author), Malchev, P.G. (author), Picken, S.J. (author), Schoonman, J. (author)
Electrodes based on carbon, i.e., expanded graphite (20%, wt.)-epoxy composite (20EG-Epoxy) and expanded graphite (20%, wt.)-polystyrene composite (20EG-PS) have been prepared, characterized using scanning electron microscopy (SEM) and cyclic voltammetry (CV), and tested as anodic sensors. The electrodes exhibited good mechanical resistance and...
journal article 2007
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Loef, R. (author), Schoonman, J. (author), Goossens, A. (author)
Type transformation in CuInSe2 and CuInS2 solar cells is an important issue with far reaching consequences. In the present study, the presence of a p-n homojunction inside CuInS2 in a TiO2/CuInS2 device is revealed with a detailed impedance spectroscopy and capacitance study. A n-type CuInS2 film with a thickness of 40?nm is found at the TiO2 (n...
journal article 2007
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