Transients in Electrochemical CO Reduction Explained by Mass Transport of Buffers
EC-MS shows pulsed electrochemical CO reduction triggers brief methane and hydrogen transients in phosphate buffer — absent in borate — traced to local phosphate depletion and confirmed by mass transport modelling.
Electroreduction of NO3− on tubular porous Ti electrodes
EC-MS reveals how tubular porous Ti electrodes reduce nitrate to ammonia at 58% faradaic efficiency, with hydroxylamine, NO, and N₂O as byproducts — and how inert gas flow boosts partial current density to −75 mA cm⁻² for scalable nitrate recycling.
The low overpotential regime of acidic water oxidation part I: the importance of O2 detection
EC-MS extends acidic water oxidation activity measurements down to 1.30 V_RHE on Ru-based catalysts, revealing a previously unseen Tafel slope and showing how detector sensitivity shapes onset potential and exchange current density.
Quantitative Operando Detection of Electro Synthesized Ammonia Using Mass Spectrometry
A 22 eV chip-based EC-MS setup enables operando detection of electro synthesized ammonia at pmol/s sensitivity, revealing 49±3% faradaic efficiency and ammonia production that continues after lithium electroplating stops.
Effect of Electrolyte and Electrode Configuration on Cu-Catalyzed Nitric Oxide Reduction to Ammonia
EC-MS shows Cu electrodes drive nitric oxide reduction to ammonia in acid, while neutral pH favors N₂O/N₂ — until a hollow fiber electrode with high NO flow restores high faradaic efficiency and NH₃ output, pointing to waste-NO-to-fertilizer conversion.
Surface Hydride Formation on Cu(111) and Its Decomposition to Form H2 in Acid Electrolytes
On Cu(111), surface hydride formation coincides with anion desorption and decomposes to H₂ by recombination — a unique effect absent on Cu(110) and Cu(100), confirmed by mass spectrometry and Raman spectroscopy.
Online Electrochemistry–Mass Spectrometry Evaluation of the Acidic Oxygen Evolution Reaction at Supported Catalysts
Chip-based EC-MS decouples the acidic oxygen evolution reaction from competing anodic currents in a graphene-supported Ru catalyst, resolving activation, steady-state, and degradation stages individually.
Monitoring oxygen production on mass-selected iridium–tantalum oxide electrocatalysts
Mass-selected IrTaOx nanoparticles outperform commercial IrO₂ in oxygen evolution, with EC-MS isotope labelling revealing enhanced active-site behavior under real operating conditions
Model electrocatalysts for the oxidation of rechargeable electrofuels – carbon supported Pt nanoparticles prepared in UHV
Model Pt/carbon electrocatalysts made in UHV, studied for isopropanol-to-acetone oxidation — a rechargeable electrofuels cycle with onset at 0.3 V_RHE.
Enhancing Iridium Nanoparticles’ Oxygen Evolution Reaction Activity and Stability by Adjusting the Coverage of Titanium Oxynitride Flakes on Reduced Graphene Oxide Nanoribbons’ Support
A carbon–ceramic nanocomposite of Ir nanoparticles and titanium oxynitride flakes on reduced graphene oxide nanoribbons boosts oxygen evolution reaction activity up to 30x over commercial IrO2, driven by heterojunction formation between the three phases.