Electrochemically Quantifying Oxygen Reduction Selectivity in Nonaqueous Electrolytes

Article Chemistry, Inorganic & Nuclear

Homogeneous Catalytic Reduction of O2 to H2O by a Terpyridine-Based FeN3O Complex

Emma N. Cook et al.

Summary: A new terpyridine-based FeN3O catalyst, Fe-(tpy(tbu)pho)Cl-2, is reported for reducing O2 to H2O. Mechanistic studies suggest a 2 + 2 mechanism with hydrogen peroxide produced as an intermediate in the reduction process.

INORGANIC CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

Catalytic Reduction of Dioxygen to Water by a Bioinspired Non-Heme Iron Complex via a 2+2 Mechanism

Emma N. Cook et al.

Summary: This study presents a bioinspired non-heme Fe complex with a tripodal [N3O](-) ligand framework that shows electrocatalytic activity towards dioxygen reduction using acetic acid as a proton source. The complex selectively produces water via a 2+2 mechanism, with H2O2 generated as an intermediate species, and spectroscopic analysis reveals the formation of an Fe(III)-hydroxide species following exposure to H2O2. The ligand's carboxylate moiety is shown to be sensitive to hydrogen-bonding interactions with the acetic acid proton donor during reduction, providing insight into the distribution of charge and proton donors in mononuclear non-heme Fe active sites during reactions with dioxygen.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Pendent Relay Enhances H2O2 Selectivity during Dioxygen Reduction Mediated by Bipyridine-Based Co-N2O2 Complexes

Asa W. Nichols et al.

Summary: The selectivity of cobalt-N2O2 complexes during oxygen reduction can be modified by adjusting the ligand structure, potentially due to the influence of protonation steps. In the presence of strong acids, complexes with -pendent groups will undergo Co(III)-superoxide protonation as the rate-determining step, leading to predominantly H2O2 production.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Multiple selectivity-determining mechanisms of H2O2 formation in iron porphyrin-catalysed oxygen reduction

Anna C. Brezny et al.

Summary: In Fe(porphyrin)-catalysed oxygen reduction, multiple mechanisms for H2O2 formation are accessible, dictated by the porphyrin secondary structure. This approach can be applied to other electrocatalytic processes and offers insights into determining the selectivity-determining steps.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Reduction of dioxygen to water by a Co(N2O2) complex with a 2,2′-bipyridine backbone

Asa W. Nichols et al.

Summary: In this study, a Co-based complex was utilized for the reduction of O2 to H2O, showing selectivity for the four-electron/four-proton reduction product. The key selectivity difference was found to arise from increased favorability of protonation at the distal O position of the key intermediate Co(III)-hydroperoxide. Interestingly, no product selectivity dependence was observed with respect to the presence of pyridine during catalysis.

CHEMICAL COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Selectivity-Determining Steps in O2 Reduction Catalyzed by Iron(tetramesitylporphyrin)

Anna C. Brezny et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Chemistry, Physical

Advances in the Molecular Catalysis of Dioxygen Reduction

Charles W. Machan

ACS CATALYSIS (2020)

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Article Multidisciplinary Sciences

Highly efficient electrosynthesis of hydrogen peroxide on a superhydrophobic three-phase interface by natural air diffusion

Qizhan Zhang et al.

NATURE COMMUNICATIONS (2020)

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Article Electrochemistry

A Superoxide Involved Oxygen Reduction Reaction Mechanism on a Glassy Carbon Electrode in Caustic Media

Victoria F. Mattick et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2020)

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Article Multidisciplinary Sciences

Scalable neutral H2O2 electrosynthesis by platinum diphosphide nanocrystals by regulating oxygen reduction reaction pathways

Hui Li et al.

NATURE COMMUNICATIONS (2020)

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Editorial Material Chemistry, Physical

Recommended practice to report selectivity in electrochemical synthesis of H2O2

Chuan Xia et al.

NATURE CATALYSIS (2020)

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Article Chemistry, Inorganic & Nuclear

Catalytic Reduction of Oxygen by a Copper Thiosemicarbazone Complex

Tatiana Straistari et al.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2020)

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Article Chemistry, Multidisciplinary

A Non-Heme Diiron Complex for (Electro)catalytic Reduction of Dioxygen: Tuning the Selectivity through Electron Delivery

Lianke Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Multidisciplinary

Mechanism of Catalytic O2 Reduction by Iron Tetraphenylporphyrin

Michael L. Pegis et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Multidisciplinary

Bronsted Acid Scaling Relationships Enable Control Over Product Selectivity from O2 Reduction with a Mononuclear Cobalt Porphyrin Catalyst

Yu-Heng Wang et al.

ACS CENTRAL SCIENCE (2019)

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Review Chemistry, Organic

On the Basicity of Organic Bases in Different Media

Sofja Tshepelevitsh et al.

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY (2019)

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Article Multidisciplinary Sciences

Direct electrosynthesis of pure aqueous H2O2 solutions up to 20% by weight using a solid electrolyte

Chuan Xia et al.

SCIENCE (2019)

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Article Chemistry, Multidisciplinary

Electrocatalytic Reduction of Dioxygen to Hydrogen Peroxide by a Molecular Manganese Complex with a Bipyridine-Containing Schiff Base Ligand

Shelby L. Hooe et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

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Review Chemistry, Multidisciplinary

Oxygen Reduction by Homogeneous Molecular Catalysts and Electrocatalysts

Michael L. Pegis et al.

CHEMICAL REVIEWS (2018)

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Article Chemistry, Multidisciplinary

Kinetic and Mechanistic Characterization of Low-Overpotential, H2O2-Selective Reduction of O2 Catalyzed by N2O2-Ligated Cobalt Complexes

Yu-Heng Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2018)

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Article Chemistry, Physical

Oxygen Reduction Reaction Promoted by Manganese Porphyrins

Guillaume Passard et al.

ACS CATALYSIS (2018)

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Article Chemistry, Multidisciplinary

The Achilles' heel of iron-based catalysts during oxygen reduction in an acidic medium

Chang Hyuck Choi et al.

ENERGY & ENVIRONMENTAL SCIENCE (2018)

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Article Chemistry, Physical

High-efficiency oxygen reduction to hydrogen peroxide catalysed by oxidized carbon materials

Zhiyi Lu et al.

NATURE CATALYSIS (2018)

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Article Chemistry, Multidisciplinary

A Self-Assembled Cofacial Cobalt Porphyrin Prism for Oxygen Reduction Catalysis

Amanda N. Oldacre et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Article Chemistry, Multidisciplinary

Molecular Cobalt Catalysts for O2 Reduction: Low-Overpotential Production of H2O2 and Comparison with Iron-Based Catalysts

Yu-Heng Wang et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

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Review Chemistry, Multidisciplinary

Molecular electrocatalysts for the oxygen reduction reaction

Subal Dey et al.

NATURE REVIEWS CHEMISTRY (2017)

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Review Chemistry, Multidisciplinary

Recent Advances in Electrocatalysts for Oxygen Reduction Reaction

Minhua Shao et al.

CHEMICAL REVIEWS (2016)

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Article Chemistry, Multidisciplinary

Oxygen Reduction Catalysis at a Dicobalt Center: The Relationship of Faradaic Efficiency to Overpotential

Guillaume Passard et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Article Chemistry, Physical

Determination of the Electron Transfer Number for the Oxygen Reduction Reaction: From Theory to Experiment

Ruifeng Zhou et al.

ACS CATALYSIS (2016)

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Article Chemistry, Multidisciplinary

Homogenous Electrocatalytic Oxygen Reduction Rates Correlate with Reaction Overpotential in Acidic Organic Solutions

Michael L. Pegis et al.

ACS CENTRAL SCIENCE (2016)

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Article Chemistry, Inorganic & Nuclear

Standard Reduction Potentials for Oxygen and Carbon Dioxide Couples in Acetonitrile and N,N-Dimethylformamide

Michael L. Pegis et al.

INORGANIC CHEMISTRY (2015)

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Article Chemistry, Multidisciplinary

Direct Comparison of Electrochemical and Spectrochemical Kinetics for Catalytic Oxygen Reduction

Derek J. Wasylenko et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2014)

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Article Chemistry, Inorganic & Nuclear

Direct Determination of Equilibrium Potentials for Hydrogen Oxidation/Production by Open Circuit Potential Measurements in Acetonitrile

John A. S. Roberts et al.

INORGANIC CHEMISTRY (2013)

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Article Chemistry, Multidisciplinary

Efficient Two-Electron Reduction of Dioxygen to Hydrogen Peroxide with One-Electron Reductants with a Small Overpotential Catalyzed by a Cobalt Chlorin Complex

Kentaro Mase et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

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Article Chemistry, Multidisciplinary

Factors That Control Catalytic Two- versus Four-Electron Reduction of Dioxygen by Copper Complexes

Shunichi Fukuzumi et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Article Chemistry, Multidisciplinary

Electrocatalytic Oxygen Reduction by Iron Tetra-arylporphyrins Bearing Pendant Proton Relays

Colin T. Carver et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Article Chemistry, Multidisciplinary

Aqueous CO2 Reduction at Very Low Overpotential on Oxide-Derived Au Nanoparticles

Yihong Chen et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Article Chemistry, Physical

Hydrogen peroxide electrochemistry on platinum: towards understanding the oxygen reduction reaction mechanism

Ioannis Katsounaros et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2012)

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Article Chemistry, Multidisciplinary

Prediction of Acidity in Acetonitrile Solution with COSMO-RS

Frank Eckert et al.

JOURNAL OF COMPUTATIONAL CHEMISTRY (2009)

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Editorial Material Multidisciplinary Sciences

Just a Dream-or Future Reality?

Hubert A. Gasteiger et al.

SCIENCE (2009)

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Article Electrochemistry

Hydrogen peroxide formation rates in a PEMFC anode and cathode - Effect of humidity and temperature

Vijay A. Sethuraman et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2008)

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Review Chemistry, Multidisciplinary

Hydrogen peroxide synthesis: An outlook beyond the anthraquinone process

Jose M. Campos-Martin et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2006)

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Article Chemistry, Multidisciplinary

Mechanism of four-electron reduction of dioxygen to water by ferrocene derivatives in the presence of perchloric acid in benzonitrile, catalyzed by cofacial dicobalt porphyrins

S Fukuzumi et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2004)

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Article Chemistry, Analytical

Detection of hydrogen peroxide at mesoporous platinum microelectrodes

SAG Evans et al.

ANALYTICAL CHEMISTRY (2002)

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Electrochemically Quantifying Oxygen Reduction Selectivity in Nonaqueous Electrolytes

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