Work

Direct functionalization of Mo2CT x MXene via single-step synthesis for printable, flexible, non-invasive moisture detection systems

Year: 2025

Type: article

Abstract: A printable moisture sensor is an advanced device designed to measure water content in various materials, including soil, air, and other substances. The incorporation of K+ functionalization significantly increases the material’s hydrophilicity, promoting more effective adsorption and desorption of water molecules. This study explores the impact of MXene functionalization on moisture sensing performance by examining the water adsorption behavior of both pure and K+-functionalized MXene-based sensors. Two different concentrations of K+-functionalized MXene, 1M and 3M, were investigated. The results demonstrated that the 3M K+-functionalized MXene exhibited better performance. These sensors demonstrated high sensitivity of 1.580 ΔR/%Δ relative humidity (RH) across a wide humidity range (20%–80% RH) and featured ultrafast response and recovery times of 2.5 s and 12.5 s, respectively. Furthermore, the Mo2CT x -based sensors not only achieve the broadest operational range but also set a new benchmark for MXene-based moisture sensor sensitivity, outperforming the current state-of-the-art. These remarkable properties establish Mo2CT x -based sensors as highly promising candidates for printable, flexible, and non-invasive moisture detection systems, enabling real-time environmental and industrial monitoring.

Source: Flexible and Printed Electronics

DOI: 10.1088/2058-8585/ae03d3

Authors: Syahirah Umairah Mahadi, Siti Nabila Aidit, Norazriena Yusoff, Sharifah Fatmadiana Wan Muhammad Hatta, Siti Fairus Abdul Sani

Institution: University of Malaya

Language: English

Topic: Gas Sensing Nanomaterials and Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funder: Ministry of Higher Education, Malaysia