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Cutting-edge advances in two-dimensional layered double hydroxides: structure, synthesis, functionalization,

Kanwal Iqbal^1,2,3, Anam Iqbal⁴, Sara Benabid^5,6

¹Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.

Mikrochimica Acta

|July 29, 2025

Summary

Layered double hydroxides (LDHs) show great potential for advanced sensors due to their unique structure and properties. This review details their design, synthesis, and application in electrochemical, gas, optical, and humidity sensing technologies.

Keywords:

2D materials LDHs synthesis Layered double hydroxide Sensor

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Area of Science:

Materials Science
Nanotechnology
Sensor Technology

Background:

Two-dimensional layered double hydroxides (LDHs) possess tunable composition, large surface area, and ion-exchange capacity, making them suitable for sensor development.
Existing research highlights LDHs' potential, but a systematic analysis of design strategies for sensor performance is lacking.

Purpose of the Study:

To provide a comprehensive overview of layered double hydroxides (LDHs) for sensor applications.
To analyze how structural features, synthesis, and functionalization of LDHs impact sensor performance.
To critically evaluate recent advancements in LDH-based electrochemical, gas, optical, and humidity sensors.

Main Methods:

Systematic review of recent literature on layered double hydroxides (LDHs) in sensor applications.
Analysis of structural properties, synthesis methods, and functionalization techniques.
Critical evaluation of sensing mechanisms and performance metrics for various sensor types.

Main Results:

LDHs offer versatile platforms for electrochemical, gas, optical, and humidity sensors with tunable properties.
Material design significantly influences sensor performance, addressing challenges like conductivity and stability.
Emerging trends include multifunctional LDHs and integration into intelligent sensing platforms.

Conclusions:

Rational design of LDHs is crucial for optimizing sensor performance and enabling next-generation sensing technologies.
Further research into overcoming limitations like conductivity and stability will enhance practical applications of LDH-based sensors.
LDHs are promising materials for developing advanced, multifunctional, and intelligent sensor systems.