4.6 Review

UV-Vis operando spectroelectrochemistry for (photo)electrocatalysis: Principles and guidelines

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Mechanistic Insights into Selective Acetaldehyde Formation from Ethanol Oxidation on Hematite Photoanodes by Operando Spectroelectrochemistry

Jianhe Yuan et al.

Summary: This study employed operando spectroelectrochemical and photoelectrochemical methods to investigate the charge carrier dynamics of photogenerated holes in hematite for ethanol oxidation and its possible over-oxidation. The results showed that ethanol oxidation exhibited high selectivity and efficiency, while the overoxidation of acetaldehyde was suppressed due to kinetic competition. By comparing the activation energies, the advantage of using hematite for safer and sustainable value-added aldehyde synthesis was elucidated, and the challenges in broad-spectrum deep oxidation of organic compounds using metal oxides in water purification were addressed.

CHEMSUSCHEM (2022)

Article Chemistry, Physical

Determining Structure-Activity Relationships in Oxide Derived Cu-Sn Catalysts During CO2 Electroreduction Using X-Ray Spectroscopy

Laura C. Pardo Perez et al.

Summary: The study focuses on the application of Cu-Sn bimetallic catalysts in selective CO2 conversion, exploring the synergistic mechanism between Cu and Sn and discovering significant differences in Sn content and speciation between different catalyst types, further elucidating the role of Sn in CO and formate selectivity.

ADVANCED ENERGY MATERIALS (2022)

Article Multidisciplinary Sciences

Orbital-resolved visualization of single-molecule photocurrent channels

Miyabi Imai-Imada et al.

Summary: This study combines a scanning tunnelling microscope (STM) with localized plasmon fields driven by a tunable laser to directly visualize the photocurrent channels through the molecular orbitals of a single molecule at atomic-scale resolution. The direction and spatial distribution of the photocurrent were found to be sensitive to the bias voltage, and counter-flowing photocurrent channels were detected even at a voltage where the averaged photocurrent is close to zero. The competition between photoinduced electron transfer (PET) and photoluminescence was also observed, and the relaxation pathway of the excited molecule could be controlled by positioning the STM tip with three-dimensional, atomic precision.

NATURE (2022)

Article Materials Science, Multidisciplinary

Nonthermal breaking of magnetic order via photogenerated spin defects in the spin-orbit coupled insulator Sr3Ir2O7

Ernest Pastor et al.

Summary: This study investigates the response of strongly spin-orbit coupled insulator Sr3Ir2O7 to laser-induced demagnetization using ultrafast, broadband, optical spectroscopy. The results show that magnetization can be rapidly and strongly suppressed within sub-150 fs timescale, and the recovery time increases with the magnitude of demagnetization. Additionally, the lattice remains in a nonthermal state during the optical modulation of spin order, suggesting the presence of photogenerated spin defects responsible for the long-lived demagnetized state.

PHYSICAL REVIEW B (2022)

Review Chemistry, Multidisciplinary

In Situ/Operando Electrocatalyst Characterization by X-ray Absorption Spectroscopy

Janis Timoshenko et al.

Summary: X-ray absorption spectroscopy (XAS) is a crucial method for investigating the structure and composition of heterogeneous catalysts, revealing the nature of active sites and establishing links between structural motifs, local electronic structure, and catalytic properties. Recent advancements in instrumentation and data analysis approaches for deciphering X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra have been discussed, with emphasis on applications in the field of heterogeneous catalysis, particularly in electrocatalysis.

CHEMICAL REVIEWS (2021)

Editorial Material Chemistry, Physical

Heterogeneous electrocatalysis goes chemical

Shannon W. Boettcher et al.

Summary: After a century of research on heterogeneous electrocatalysis, the specific mechanisms involved, particularly in the oxygen evolution reaction on IrOx, are still not fully understood. A new proposal suggests that the reaction is driven by changes in the redox state of the Ir-O active sites rather than changes in the interfacial electric field.

NATURE CATALYSIS (2021)

Editorial Material Chemistry, Physical

Understanding What Controls the Rate of Electrochemical Oxygen Evolution

Reshma R. Rao et al.

Summary: Using experimental and theoretical tools, researchers have determined that the key step in water oxidation mechanism on state-of-the-art iridium dioxide involves the chemical O-O bond formation between a water molecule and adsorbed oxygen, with the accumulation of oxidized states reducing the barrier for this step.

JOULE (2021)

Article Chemistry, Multidisciplinary

Operando Infrared Spectroscopy Reveals the Dynamic Nature of Semiconductor-Electrolyte Interface in Multinary Metal Oxide Photoelectrodes

Anirudh Venugopal et al.

Summary: By using operando photoelectrochemical attenuated total reflection Fourier transform infrared (PEC-ATR-FTIR) spectroscopy, the study on the metal oxide/electrolyte interface, it was found that preferential dissolution of vanadium occurs from the BiVO4/water interface under open-circuit conditions, while both bismuth and vanadium dissolution occurs when an anodic potential is applied under illumination.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Physical

Redox-State Kinetics in Water-Oxidation IrOx Electrocatalysts Measured by Operando Spectroelectrochemistry

Carlota Bozal-Ginesta et al.

Summary: Hydrous iridium oxides (IrOx) have been proven to be the best oxygen evolution electrocatalysts for operation in acidic environments. This study utilizes time-resolved operando spectroelectrochemistry to investigate the redox-state kinetics of IrOx electrocatalyst films for both water and hydrogen peroxide oxidation, identifying different redox species and quantifying their concentrations as a function of applied potential. The generation of Ir4.y+ states is found to be the potential-determining step for catalytic water oxidation, while H2O2 oxidation is observed to be driven by the generation of Ir4+ states.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

From NiMoO4 to γ-NiOOH: Detecting the Active Catalyst Phase by Time Resolved in Situ and Operando Raman Spectroscopy

Robin N. Durr et al.

Summary: This study investigates NiMoO4 as a catalyst for the oxygen evolution reaction, showing its phase transformation under applied bias and the leaching of molybdenum from the catalyst. Molybdenum leaching increases the number of active sites on the catalyst, leading to higher current densities. Different NiMoO4 nanostructures influence the stability of the catalyst in alkaline media.

ACS NANO (2021)

Review Nanoscience & Nanotechnology

The kinetics of metal oxide photoanodes from charge generation to catalysis

Socha Corby et al.

Summary: This article discusses the impact of charge carrier dynamics of metal oxide photoanodes on their photoelectrochemical water oxidation performance, along with comparison with the function of metal oxides in photocatalytic and electrocatalytic systems. It evaluates the main kinetic processes determining photoanode performance and explores methods to enhance performance.

NATURE REVIEWS MATERIALS (2021)

Article Chemistry, Multidisciplinary

Water oxidation kinetics of nanoporous BiVO4 photoanodes functionalised with nickel/iron oxyhydroxide electrocatalysts

Laia Francas et al.

Summary: In this study, spectroelectrochemical techniques were used to analyze the catalytic water oxidation performance of nickel/iron oxyhydroxide electrocatalysts deposited on FTO and BiVO4 under neutral pH conditions. The results showed similar electrochemical water oxidation performance for different catalysts, with enhancements observed on BiVO4 photoanodes. The enhancements were attributed to the suppression of recombination losses and improved charge transfer, leading to significantly enhanced water oxidation performance compared to unmodified BiVO4.

CHEMICAL SCIENCE (2021)

Article Chemistry, Multidisciplinary

Electrochemical Stability of the Reconstructed Fe3O4(001) Surface

Doris Grumelli et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Multidisciplinary Sciences

Key role of chemistry versus bias in electrocatalytic oxygen evolution

Hong Nhan Nong et al.

NATURE (2020)

Review Chemistry, Multidisciplinary

Operando characterization techniques for electrocatalysis

Jingkun Li et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Chemistry, Physical

Photoelectrochemical solar fuels from carbon dioxide, water and sunlight

Jose Ramon Galan-Mascaros

CATALYSIS SCIENCE & TECHNOLOGY (2020)

Article Chemistry, Multidisciplinary

Oxygen Isotope Labeling Experiments Reveal Different Reaction Sites for the Oxygen Evolution Reaction on Nickel and Nickel Iron Oxides

Seunghwa Lee et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Physical

Charge Separation, Band-Bending, and Recombination in WO3 Photoanodes

Sacha Corby et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2019)

Article Chemistry, Multidisciplinary

Impact of Oxygen Vacancy Occupancy on Charge Carrier Dynamics in BiVO4 Photoanodes

Shababa Selim et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Article Multidisciplinary Sciences

In situ observation of picosecond polaron self-localisation in α-Fe2O3 photoelectrochemical cells

Ernest Pastor et al.

NATURE COMMUNICATIONS (2019)

Article Multidisciplinary Sciences

Spectroelectrochemical study of water oxidation on nickel and iron oxyhydroxide electrocatalysts

Laia Francas et al.

NATURE COMMUNICATIONS (2019)

Article Chemistry, Multidisciplinary

Design of Iron Coordination Complexes as Highly Active Homogenous Water Oxidation Catalysts by Deuteration of Oxidation-Sensitive Sites

Zoel Codola et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Article Chemistry, Multidisciplinary

Effect of oxygen deficiency on the excited state kinetics of WO3 and implications for photocatalysis

Michael Sachs et al.

CHEMICAL SCIENCE (2019)

Review Nanoscience & Nanotechnology

Spatial and temporal exploration of heterogeneous catalysts with synchrotron radiation

Florian Meirer et al.

NATURE REVIEWS MATERIALS (2018)

Article Chemistry, Physical

Impact of nanoparticle size and lattice oxygen on water oxidation on NiFeOxHy

C. Roy et al.

NATURE CATALYSIS (2018)

Article Spectroscopy

&ITIn situ&IT/&ITOperando&IT studies of electrocatalysts using hard X-ray spectroscopy

Benedikt Lassalle-Kaiser et al.

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA (2017)

Article Chemistry, Multidisciplinary

Redox Activity of Oxo-Bridged Iridium Dimers in an N,O-Donor Environment: Characterization of Remarkably Stable Ir(IV,V) Complexes

Shashi Bhushan Sinha et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Kinetics of Photoelectrochemical Oxidation of Methanol on Hematite Photoanodes

Camilo A. Mesa et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Nature of the Active Sites for CO Reduction on Copper Nanoparticles; Suggestions for Optimizing Performance

Tao Cheng et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Multidisciplinary

Activating lattice oxygen redox reactions in metal oxides to catalyse oxygen evolution

Alexis Grimaud et al.

NATURE CHEMISTRY (2017)

Article Chemistry, Physical

Kinetic Analysis of an Efficient Molecular Light-Driven Water Oxidation System

Laia Francas et al.

ACS CATALYSIS (2017)

Review Chemistry, Multidisciplinary

Electrochemical and spectroscopic methods for evaluating molecular electrocatalysts

Katherine J. Lee et al.

NATURE REVIEWS CHEMISTRY (2017)

Article Chemistry, Physical

Rate Law Analysis of Water Oxidation and Hole Scavenging on a BiVO4 Photoanode

Yimeng Ma et al.

ACS ENERGY LETTERS (2016)

Article Chemistry, Multidisciplinary

Rate Law Analysis of Water Oxidation on a Hematite Surface

Florian Le Formal et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2015)

Article Chemistry, Multidisciplinary

In Situ Observation of Active Oxygen Species in Fe-Containing Ni-Based Oxygen Evolution Catalysts: The Effect of pH on Electrochemical Activity

Bartek J. Trzesniewski et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2015)

Article Physics, Multidisciplinary

Evidence for conical intersection dynamics mediating ultrafast singlet exciton fission

Andrew J. Musser et al.

NATURE PHYSICS (2015)

Article Multidisciplinary Sciences

Reversible amorphization and the catalytically active state of crystalline Co3O4 during oxygen evolution

Arno Bergmann et al.

NATURE COMMUNICATIONS (2015)

Article Multidisciplinary Sciences

Insight on Tafel slopes from a microkinetic analysis of aqueous electrocatalysis for energy conversion

Tatsuya Shinagawa et al.

SCIENTIFIC REPORTS (2015)

Article Chemistry, Multidisciplinary

A molecular ruthenium catalyst with water-oxidation activity comparable to that of photosystem II

Lele Duan et al.

NATURE CHEMISTRY (2012)

Article Chemistry, Multidisciplinary

Mechanism of Water Oxidation by Single-Site Ruthenium Complex Catalysts

Javier J. Concepcion et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2010)

Article Chemistry, Analytical

Electrolysis of water on oxide surfaces

J. Rossmeisl et al.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2007)

Article Multidisciplinary Sciences

Powering the planet: Chemical challenges in solar energy utilization

Nathan S. Lewis et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2006)

Article Electrochemistry

Kinetic analysis of hydrogen evolution at Ni-Mo alloy electrodes

JM Jaksic et al.

ELECTROCHIMICA ACTA (2000)