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Related Experiment Video

Updated: Jun 25, 2026

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

Raman-Responsive Photography Strategy to Unveil Hydrogen Diffusion via a Low-Dimensional Nanocapillary.

Lan Lan^1,2, Yeming Zhai^1,2, Yufei Wang³

¹Institute of Molecular Plus, Department of Chemistry, Tianjin University, Nankai District, Tianjin 300072, China.

The Journal of Physical Chemistry Letters

|February 21, 2026

Summary

Researchers visualized hydrogen diffusion pathways in membranes using a novel Raman spectroscopy technique. This method tracks hydrogen transport through advanced materials, aiding the design of efficient membranes for clean energy applications.

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Last Updated: Jun 25, 2026

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

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Published on: March 29, 2016

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Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Uncovering Hidden Dynamics of Natural Photonic Structures Using Holographic Imaging

Published on: March 31, 2022

Area of Science:

Materials Science
Chemical Engineering
Nanotechnology

Background:

Efficient hydrogen separation membranes are crucial for clean energy technologies.
Understanding hydrogen transport mechanisms in low-dimensional nanoarchitectures is challenging.
Current methods lack spatial resolution for tracking diffusion pathways.

Purpose of the Study:

To develop a novel method for visualizing hydrogen diffusion pathways through selective membranes.
To investigate hydrogen transport mechanisms in membranes based on 2D materials and frameworks.
To guide the design of next-generation hydrogen separation membranes.

Main Methods:

A Raman-responsive "photography" strategy using H2-sensitive vanadium oxide as a "photographic film".
Spatial-resolution tracking of hydrogen diffusion via Raman fingerprint decay at 197 cm-1.
Analysis of hydrogen transport in membranes made of 2D MXene, boron nitride, and zeolite.

Main Results:

Visualized hydrogen diffusion pathways through various selective membranes.
Demonstrated restricted vertical diffusion in nonporous boron nitride membranes.
Showed enhanced cross-plane transport with introduced pores or disrupted nanosheet assemblies.

Conclusions:

The Raman-based "photography" strategy effectively visualizes hydrogen diffusion pathways.
Membrane structure significantly influences hydrogen transport efficiency.
This technique provides a paradigm for designing advanced hydrogen separation membranes.