Ti_(3)C_(2)T_(x)/SnO_(2)P–N heterostructure construction boosts room-temperature detecting formaldehyde

作     者：Yue Zhang Ming-Yue Wang Xiao-Guang San Yan-Bai Shen Guo-Sheng Wang Lei Zhang Dan Meng Yue Zhang;Ming-Yue Wang;Xiao-Guang San;Yan-Bai Shen;Guo-Sheng Wang;Lei Zhang;Dan Meng

作者机构：College of Chemical EngineeringShenyang University of Chemical TechnologyShenyang 110142China Institute for Superconducting and Electronic Materials(ISEM)Australian Institute for Innovative Materials(AIIM)University ofWollongongWollongongNSW2500Australia College of Resources and Civil EngineeringNortheastern UniversityShenyang 110819China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2024年第43卷第1期

页      面：267-279页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 

基　　金：financially supported by the National Natural Science Foundation of China(No.61973223) the Innovative Talents in Colleges and Universities in Liaoning Province(No.2020389) Liao Ning Revitalization Talents Program(No.XLYC2007051) Liaoning Educational Department Foundation(No.LJKMZ20220762) the Natural Science Foundation of Liaoning Province(No.2021-MS-257) the Young and Middle-aged Scientific and Technological Innovation Talents of Shenyang Science and Technology Bureau(No.RC200352) 

主　　题：Ti_(3)C_(2)T_(x)/SnO_(2)nanocomposites p-n heterostructures Formaldehyde sensing Room temperature DFT calculations 

摘      要：Formaldehyde is a common atmospheric pollutant produced in industrial production and daily ***,the traditional semiconductor formaldehyde gas sensor cannot work at room temperature,which limits its practical ***,developing high-performance gas sensors for rapidly and accurately detecting formaldehyde at room temperature is an important *** this study,Ti_(3)C_(2)Tx/SnO_(2)heterostructures were constructed,which could selectively detect formaldehyde at room temperature with a response value of 29.16%(10×10^(-6)).In addition,the sensor shows a remarkable theoretical detection limit of 5.09×10^(-9)and good longterm *** functional theory(DFT)simulations reveal that SnO_(2)nano spheres provide the majority of adsorption sites that strongly interact with ***,Ti_(3)C_(2)T_(x)acting as a conductive layer facilitates the transfer of charge carriers so that they show a sensing response to formaldehyde at room ***,the formation of p-n heterostructures between SnO_(2)and Ti_(3)C_(2)T_(x)boosts the Schottky barrier at the interface,which is the critical factor in enhancing the sensing properties by turning the Schottky barrier upon introducing formaldehyde *** perspective is expected to provide instructive guidance for utilizing MXene/metal oxide nanocomposites to improve the gas sensing performance at room temperature.