Interface engineering of ZnSnO_(3)-based heterojunctions for room-temperature methanol monitoring

作     者：Jin-Yong Xu Kai-Chun Xu Xiao-Xi He Han-Lin Liao Marc Debliquy Qiao-Quan Liu Chao Zhang Jin-Yong Xu;Kai-Chun Xu;Xiao-Xi He;Han-Lin Liao;Marc Debliquy;Qiao-Quan Liu;Chao Zhang

作者机构：College of Mechanical EngineeringYangzhou UniversityYangzhou 225127China ICB UMR 6303CNRSUniv.Bourgogne Franche-ComteUTBMBelfort 90010France Service de Science des MatériauxFaculte PolytechniqueUniversitéde MonsMons 7000Belgium College of AgricultureYangzhou UniversityYangzhou 225009China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第12期

页      面：4153-4166页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 

基　　金：financially supported by the Outstanding Youth of Jiangsu Province of China (No.BK20211548) the China Scholarship Council (No.202108320264) the Excellent Doctoral Dissertation Fund of Yangzhou University (2022) 

主　　题：ZnSnO_(3) Heterojunctions Methanol Gas sensor Density functional theory calculations 

摘      要：Detecting methanol is of great importance in the organic synthesis ***,the effective utilization of ZnSnO_(3)-based microstructures for room-temperature methanol monitoring was realized through a template-free ***_(3)-based heterojunctions with different structures and morphologies were successfully synthesized via regulating the molar ratio of Zn2+and Sn4+*** room-temperature sensing properties towards methanol were *** them,ZnO/ZnSnO_(3) hollow microcubes exhibited an outstanding sensing performance including a high sensitivity(10.16)and a response/recovery time(14/75 s)and a limit of detection(490×10^(-9))towards 5×10^(-6)***,the synergistic effects of hollow structure with larger specific surface areas(42.277 m^(2)·g^(-1)),the construction of n-n heterojunctions formed at ZnSnO_(3) and ZnO interfaces,the high percentage of dissociative and chemisorbed oxygen are the main causes of the elevated sensing ***,the practical experiment demonstrated that ZnO/ZnSnO_(3) was capable of on-field monitoring methanol in the chemical reaction utilizing H_(2) and CO_(2) as raw ***,with the help of density functional theory calculations,the enhanced sensing properties of ZnO/ZnSnO_(3) are due to the special tuning effects of Zn ionic sites on methanol adsorption.