Untangling the Mechanisms in Magneto‐Electrocatalytic Oxygen Evolution DOI Creative Commons

Amy Radford,

Dorottya Szalay,

Qiming Chen

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract External magnetic fields emerge as a promising method for enhancing the electrocatalytic oxygen evolution reaction (OER), yet underlying magneto‐electric (ME) mechanisms are not well understood. The slow kinetics of OER make it key challenge in water‐splitting, technique sustainable H 2 fuel production. Herein, systematic approach is presented to analyzing ME governing OER, using metallic‐plate (Ni foam, Ni sheet, and Pt sheet) powder‐based (Co 3 O 4 /BaFe 12 19 on carbon paper) electrodes. Through controlled experiments varying field strengths orientations, Lorentz force spin‐polarization separated. For metallic electrodes, effects orientation‐dependent, indicating domination by force. Magnetic flux density about electrode surface shown govern behavior. Interestingly, “pseudo” effect discovered which results from relative position reference electrode, highlighting importance experimental design. Co systems display minimal orientation dependence, domination. Introducing BaFe co‐catalyst further amplifies effect, marking first demonstration enhancement magneto‐electrocatalysis. This work provides insights into mechanisms, linking composition, magnetism, geometry performance, offering new pathways optimizing future magneto‐electrocatalytic systems.

Language: Английский

N-doped carbon decorated by Cu3P nanoparticle derived from Aspartic acid - Cu MOF as suitable catalysts for oxygen and hydrogen evolution reactions DOI

Elham Soltani,

Mohammad Bagher Gholivand

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 92, P. 14 - 26

Published: Oct. 22, 2024

Language: Английский

Citations

4
Inherently evolved Cr-riveted protective film on stainless steel enabling stable seawater splitting DOI

Hongming Hong,

Jiankun Li, Shiyi Li

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121533 - 121533

Published: March 1, 2025

Language: Английский

Citations

0
Guideline for Analysis and Prevention of Contamination Catalysis DOI Creative Commons
János Daru, Zsombor Gonda, Zoltán May

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Over the last decades, numerous efforts have been made to replace metal catalysts with cheaper and earth‐abundant alternatives or completely exclude metals from cross‐coupling reactions while maintaining high efficiency in target transformation. However, follow‐up studies often revealed role of impurities catalytic process. Thus, active can lead mechanistic misinterpretations, these could initiate erroneous research directives severe reproducibility problems. Milestone precedents impurity effect are well documented literature. Interestingly, this fallacy has reoccurred repeatedly over years due a lack thorough appropriate study schemes for identifying effects. Herein, we propose guideline elucidate real catalyst future transformations, aiming reveal correct mechanism help novel processes. Although mainly focuses on problems related trace transition metals, it also offers basis more general research.

Language: Английский

Citations

0
Guideline for Analysis and Prevention of Contamination Catalysis DOI Creative Commons
János Daru, Zsombor Gonda, Zoltán May

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Over the last decades, numerous efforts have been made to replace metal catalysts with cheaper and earth‐abundant alternatives or completely exclude metals from cross‐coupling reactions while maintaining high efficiency in target transformation. However, follow‐up studies often revealed role of impurities catalytic process. Thus, active can lead mechanistic misinterpretations, these could initiate erroneous research directives severe reproducibility problems. Milestone precedents impurity effect are well documented literature. Interestingly, this fallacy has reoccurred repeatedly over years due a lack thorough appropriate study schemes for identifying effects. Herein, we propose guideline elucidate real catalyst future transformations, aiming reveal correct mechanism help novel processes. Although mainly focuses on problems related trace transition metals, it also offers basis more general research.

Language: Английский

Citations

0
Untangling the Mechanisms in Magneto‐Electrocatalytic Oxygen Evolution DOI Creative Commons

Amy Radford,

Dorottya Szalay,

Qiming Chen

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract External magnetic fields emerge as a promising method for enhancing the electrocatalytic oxygen evolution reaction (OER), yet underlying magneto‐electric (ME) mechanisms are not well understood. The slow kinetics of OER make it key challenge in water‐splitting, technique sustainable H 2 fuel production. Herein, systematic approach is presented to analyzing ME governing OER, using metallic‐plate (Ni foam, Ni sheet, and Pt sheet) powder‐based (Co 3 O 4 /BaFe 12 19 on carbon paper) electrodes. Through controlled experiments varying field strengths orientations, Lorentz force spin‐polarization separated. For metallic electrodes, effects orientation‐dependent, indicating domination by force. Magnetic flux density about electrode surface shown govern behavior. Interestingly, “pseudo” effect discovered which results from relative position reference electrode, highlighting importance experimental design. Co systems display minimal orientation dependence, domination. Introducing BaFe co‐catalyst further amplifies effect, marking first demonstration enhancement magneto‐electrocatalysis. This work provides insights into mechanisms, linking composition, magnetism, geometry performance, offering new pathways optimizing future magneto‐electrocatalytic systems.

Language: Английский

Citations

0