Malika Ammam

University of Kansas

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Jan Fransaer

KU Leuven

George S. Wilson

University of Kansas

E. Bradley Easton

University of Ontario Institute of Technology

Richard S. Glass

University of Arizona

Louis Nadjo

Centre National de la Recherche Scientifique

Bineta Keita

Centre National de la Recherche Scientifique

Israël M. Mbomekallé

Centre National de la Recherche Scientifique

Takuhei Yamamoto

Gifu University

Gary S. Nichol

University of Edinburgh

Christian Schöneich

University of Kansas

Cooperative Institutions

University of Arizona

Centre National de la Recherche Scientifique

University of Kansas

Vanguard University

Laboratoire de Chimie Physique

Université Paris-Sud

Emory University

University of Notre Dame

Institut Lavoisier de Versailles

Université Paris-Saclay

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Combination of laccase and catalase in construction of H2O2–O2 based biocathode for applications in glucose biofuel cells

Biosensors and Bioelectronics (2012)

Malika Ammam Jan Fransaer

10.1016/j.bios.2012.07.066

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Citations (33)

Synthesis, structural characterization, and electrocatalytic studies of αββα-(ZnIIOH2)2(FeIII)2(X2W15O56)214– (X = P or As)

Comptes Rendus Chimie (2005)

Israël M. Mbomekallé Rui Cao K.I. Hardcastle Craig L. Hill Malika Ammam

Lacunary function

Thermogravimetric analysis

10.1016/j.crci.2004.10.010

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Citations (41)

Oxygen reduction activity of binary PtMn/C, ternary PtMnX/C (X = Fe, Co, Ni, Cu, Mo and, Sn) and quaternary PtMnCuX/C (X = Fe, Co, Ni, and Sn) and PtMnMoX/C (X = Fe, Co, Ni, Cu and Sn) alloy catalysts

Journal of Power Sources (2013)

Malika Ammam E. Bradley Easton

Rotating disk electrode

10.1016/j.jpowsour.2013.02.029

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Citations (73)

A Simple Method to Reduce the Particle Size and Amount of Oxide Phase Growth in Pt-Mn Catalysts for Ethanol Oxidation

Journal of The Electrochemical Society (2013)

Malika Ammam E. Bradley Easton

In this account, we demonstrate that performing the synthesis of PtMn/C catalysts with constant N2 sparging to remove dissolved oxygen from the deposition solution, yields improved catalysts. ICP-OES displayed similar compositions of the synthetized PtMn/C catalysts with and without sparging. XPS confirmed that by sparging with N2 the amount of Mn oxides present were greatly reduced, yielding a larger fraction of the alloy phase. Cyclic voltammetry and chronoamperometry confirmed that PtMn/C catalysts prepared with N2-sparging provide superior electrocatalytic activity toward ethanol oxidation compared with those prepared without sparging. It is therefore proposed that this simple modification to a widely used deposition method could be applied to other catalytic systems where the amount of surface oxides should be limited.

Sparging

Chronoamperometry

Deposition

10.1149/2.012303jes

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Citations (2)

Electrochemical and electrophoretic deposition of enzymes: Principles, differences and application in miniaturized biosensor and biofuel cell electrodes

Biosensors and Bioelectronics (2014)

Malika Ammam

Electrophoretic Deposition

Deposition

10.1016/j.bios.2014.02.030

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Citations (49)

Limiting the Amount of Oxides in Pt-Mn Alloy Catalysts for Ethanol Oxidation

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2013)

E. Bradley Easton M R Zamanzad Ghavidel O'Rian O. Reid Malika Ammam Laura E. Prest

Abstract not Available.

Limiting

10.1149/ma2013-01/39/1366

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Citations (1)

pH sensor based on the crown heteropolyanion K28Li5H7P8W48O184·92H2O immobilized using a layer by layer assembly process

Sensors and Actuators B Chemical (2009)

Malika Ammam Benita Keita Louis Nadjo Jan Fransaer

Layer by layer

Allylamine

Supporting electrolyte

10.1016/j.snb.2009.08.036

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Citations (24)

Cyclic Voltammetry Study of the Mn‐Substituted Polyoxoanions [Mn^II₄(H₂O)₂(H₄AsW₁₅O₅₆)₂]¹⁸⁻ and [((Mn^IIOH₂)Mn^II₂PW₉O₃₄)₂(PW₆O₂₆)]¹⁷⁻: Electrodeposition of Manganese Oxides Electrocatalysts for Dioxygen Reduction

Electroanalysis (2011)

Malika Ammam Bineta Keita Louis Nadjo Israël M. Mbomekallé Michelle D. Ritorto

Abstract The electrochemical behavior of two manganese (Mn)‐substituted polyoxoanions, the dissymmetrical Dawson sandwich‐type [Mn II 4 (H 2 O) 2 (H 4 AsW 15 O 56 ) 2 ] 18− and the Keggin sandwich banana‐shaped [((Mn II OH 2 )Mn II 2 PW 9 O 34 ) 2 (PW 6 O 26 )] 17− is investigated. At pH 5, the oxidation of the Mn II ‐centers results in one oxidation wave for [Mn II 4 (H 2 O) 2 (H 4 AsW 15 O 56 ) 2 ] 18− and two oxidation waves for [((Mn II OH 2 )Mn II 2 PW 9 O 34 ) 2 (PW 6 O 26 )] 17− . To the best of our knowledge, presence of the second Mn‐based wave is rarely observed in the electrochemistry of Mn‐containing polyoxometalates. Deposition of Mn‐oxides electrocatalysts for dioxygen reduction is noticed by cyclic voltammetry, which can be distinguished by the significant positive shift in potentials of the dioxygen reduction reaction.

10.1002/elan.201000735

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Citations (20)

[As8W48O184]40−, a new crown-shaped heteropolyanion: Electrochemistry and electrocatalytic properties towards reduction of nitrite

Electrochimica Acta (2010)

Malika Ammam Israël M. Mbomekallé Bineta Keita Louis Nadjo Jan Fransaer

Supporting electrolyte

10.1016/j.electacta.2010.01.067

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Citations (26)

Electrochemical behavior and electrocatalytic properties towards hydrogen peroxide, dioxygen and nitrate of the polyanions [(NiIIOH2)2(FeIII)2(X2W15O56)2]14− (X=PV or AsV): A comparative study

Journal of Electroanalytical Chemistry (2010)