Monolayer Amphiphiles Hydrophobicize MoS2-Mediated Real-Time Water Removal for Efficient Waterproof Hydrogen Detection
Year: 2024
Type: article
Abstract: Ensuring water-fouling-free operation of semiconductor-based gas sensors is essential to maintaining their accuracy, reliability, and stability across diverse applications. Despite the use of hydrophobic strategies to prevent external water intrusion, addressing in situ-produced water transport during H 2 detection remains a challenge. Herein, we construct a novel waterproof H 2 sensor by integrating single-atom Ru (III) self-assembly with monolayer amphiphiles embedded in MoS 2 . The unique monolayer structure enables the sensor to detect H 2 in the presence of water, as well as facilitate the self-transport of in situ-generated water from the H 2 –O 2 reaction during H 2 detection. Molecular dynamics simulations reveal that monolayer amphiphiles exhibit a higher water diffusion coefficient than multilayer amphiphiles, making them more advantageous for removing in situ-produced water. Deployable on mobile platforms, it enables wireless H 2cat detection for up to 6 months, without the introduction of protective membranes against dust and water ingress. This work not only enhances the performance of H 2 detection but also introduces a new concept for the advancement of stable water-sensitive sensors.
Source: ACS Sensors
Institutions: Zhengzhou University, Zhejiang University, Chinese Academy of Sciences, Shanghai Institute of Ceramics, RMIT University, Eco-Efficient Products & Processes Laboratory, China Jiliang University, Henan Agricultural University, Nanjing Agricultural University, Centre National de la Recherche Scientifique, École Nationale Supérieure de Chimie de Lille, Université de Lille, Unité de Catalyse et Chimie du Solide, Université d'Artois, Centrale Lille Institut
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Award: G6790838967
OpenAlex ID: W4404232528