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Meeting MS&T23: Materials Science & Technology
Symposium Advanced Ceramics for Environmental Remediation
Presentation Title In Situ Vibrational Spectroscopy Studies of CO2 Electroreduction at Cu-based Electrocatalysts
Author(s) Heng-Liang Wu
On-Site Speaker (Planned) Heng-Liang Wu
Abstract Scope The solid-liquid interfacial reactions play a crucial role in controlling the performance and stability of electrocatalysts. In situ vibrational spectroscopy techniques such as Raman and surface-enhanced infrared absorption spectroscopy (SEIRAS) are the powerful tools for examining reaction intermediates on the solid-liquid interfaces. In this talk, we report on our use of in situ SEIRAS to investigate the electrochemical CO2 reduction mechanism over Cu-based electrocatalysts. Various in situ techniques are used to examine the electrochemical reactions and provide the complementary information. For instance, different CO intermediates such as COatop and CObridge, are formed on different copper electrodes during electrochemical CO2 reduction. The evolution of surface-adsorbed intermediate is associated with the oxidation state of Cu catalysts. The formation of COatop/CObridge, can be correlated to the selectivity of CO2-to-ethylene conversion. The Cu catalysts modulated by the electrochemical method exhibit different oxidation states and reaction intermediates as well as electrocatalytic properties.


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Design and Structuring of Microporous Ceramics for CO2 Capture and Utilization
Engineered Ceramics for Enhanced Weathering CO2 Capture
Highly Performing Solar-Light-Driven Photodegradation of Metronidazole by Nickel Hexacyanoferrate Nanocubes
In Situ Vibrational Spectroscopy Studies of CO2 Electroreduction at Cu-based Electrocatalysts
Multifunctional Materials for Emerging Technologies
Photocatalysis and Photosensitization Using Atomically Precise Metal Nanoclusters for Solar Energy Harvesting and Conversion
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Porous 2D Materials for Water Remediation and Diagnostics
Small yet Bright?! Microwave-assisted Synthesis of Upconverting Nanoparticles
Stripping and Regeneration of Magnetite Adsorbent Used in an Ion Exchange System
The Multipurpose Aspect of Thin Film Ceramic Materials for Photovoltaics and Photocatalysis

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