Alcohol Vapor Sensor Based on Quasi-2D Nb2O5 Derived from Oxidized Nb2CTz MXenes

作     者：Pazniak, Hanna Plugin, Ilya A. Sheverdyaeva, Polina M. Rapenne, Laetitia Varezhnikov, Alexey S. Agresti, Antonio Pescetelli, Sara Moras, Paolo Kostin, Konstantin B. Gorokhovsky, Alexander V. Ouisse, Thierry Sysoev, Victor V. 

作者机构：Univ Grenoble Alpes Inst Polytech Grenoble Ctr Natl Rech Sci Lab Mat & Genie PhysCS 50257 F-38016 Grenoble 1 France Yuri Gagarin State Tech Univ Saratov PhysicoTech Inst ul Polytech Skaya 77 Saratov 410054 Russia Ist Struttura Mat CNR ISM CNR SS 14Km 163-5 I-34149 Trieste Italy Univ Roma Tor Vergata Ctr Hybrid & Organ Solar Energy Elect Engn Dept I-00133 Rome Italy 

出 版 物：《SENSORS》 (传感器)

年 卷 期：2024年第24卷第1期

页      面：38页

核心收录：

学科分类：0710[理学-生物学] 071010[理学-生物化学与分子生物学] 0808[工学-电气工程] 07[理学] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：Russian Science Foundation 

主　　题：MXene gas sensor niobium oxide X-ray photoelectron spectroscopy multisensor array 

摘      要：MXenes are two-dimensional (2D) materials with a great potential for sensor applications due to their high aspect ratio and fully functionalized surface that can be tuned for specific gas adsorption. Here, we demonstrate that the Nb2CTz-based sensor exhibits high performance towards alcohol vapors at temperatures up to 300-350 degrees C, with the best sensitivity towards ethanol. We attribute the observed remarkable chemiresistive effect of this material to the formation of quasi-2D Nb2O5 sheets as the result of the oxidation of Nb-based MXenes. These findings are supported by synchrotron X-ray photoelectron spectroscopy studies together with X-ray diffraction and electron microscopy observations. For analyte selectivity, we employ a multisensor approach where the gas recognition is achieved by linear discriminant analysis of the vector response of the on-chip sensor array. The reported protocol demonstrates that MXene layers are efficient precursors for the derivation of 2D oxide architectures, which are suitable for developing gas sensors and sensor arrays.