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Updated: Jun 2, 2026
07:50
Hydrogen Charging of Aluminum using Friction in Water
Published on: January 28, 2020
Light-Driven Ferroic Switching Enables Reversible Control of Hydrogen Adsorption Thermodynamics
Xueqing Wan1, Zhenlong Zhang1, Charles Paillard2,3
1Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China.
Nano Letters
|June 1, 2026
Summary
Scientists achieved ultrafast, reversible control of hydrogen binding using photoinduced ferroic-order switching in 2D ferroelectric materials. This breakthrough offers new possibilities for hydrogen storage and catalysis applications.
Area of Science:
- Materials Science
- Surface Science
- Condensed Matter Physics
Background:
- Controlling surface thermodynamics at the nanoscale is crucial for applications like hydrogen storage and catalysis.
- Achieving reversible and ultrafast switching of these properties has been a significant challenge.
Purpose of the Study:
- To demonstrate a method for rapid, reversible control of hydrogen binding thermodynamics using photoinduced ferroic-order switching.
- To explore the potential of two-dimensional (2D) ionic ferroelectric monolayers for dynamic thermodynamic reconfiguration.
Main Methods:
- Investigated photoinduced ferroic-order switching in 2D ferroelectric monolayers (TiGeSe3, AgBiP2Se6, CuInP2S6).
- Utilized carrier-density-driven redistribution of transition-metal 3d orbital occupations.
- Performed nonadiabatic dynamics simulations to understand electron-phonon coupling and carrier recombination dynamics.
Main Results:
- Demonstrated continuous tuning of hydrogen adsorption free energy from 0.33 to 1.11 eV via ferroic-order switching.
- Achieved ultrafast (picosecond timescale) reversible switching of surface thermodynamics.
- Showcased the generality of the approach in multiple 2D ferroelectric materials.
Conclusions:
- Ferroic order in 2D ferroelectrics can be optically addressed for dynamic thermodynamic control.
- This approach enables rapid, reversible manipulation of hydrogen binding, promising for advanced energy and catalytic applications.
- Establishes ferroic order as a key parameter for designing dynamic surface properties beyond static configurations.
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