Tuesday publication post! 📖 In this newest study, the Atmosphere AX system was used for in situ gas phase Transmission Electron Microscopy to visualize the real-time formation of a trimetallic nanoalloy catalyst for the alkaline oxygen evolution reaction. By tracking structural transformations during reduction under controlled gas environments, the authors reveal how layered precursors evolve into highly active face-centered cubic nanoalloy catalysts.
Key highlights:
🧪 Topological reduction of NiFeMo layered double hydroxide under an Ar/H₂ atmosphere forms a trimetallic fcc NiFeMo nanoalloy
🔥 In situ gas phase TEM captures the transformation from LDH nanosheets → inverse spinel Ni1-xMoxFe2O4 nanoparticles → spherical NiFeMo nanoalloy particles
📈 Theoretical calculations show Mo species reduce the energy barrier for *OH intermediate formation, enhancing the catalytic activity of Ni active sites
This work highlights how in situ gas-environment TEM can directly visualize alloy formation pathways and guide the design of next-generation trimetallic and high-entropy nanoalloy catalysts for energy conversion.
Want to read the entire work? Find it here!
https://www.doi.org/10.1002/smll.202505716
Want to know more about the Atmosphere AX?
https://www.protochips.com/solutions/in-situ-tem-solutions/in-situ-gas-cell/
