Borophene–graphene heterostructure: Preparation and ultrasensitive humidity sensing

作     者：Chuang Hou Guo'an Tai Bo Liu Zenghui Wu Yonghe Yin Chuang Hou;Guo'an Tai;Bo Liu;Zenghui Wu;Yonghe Yin

作者机构：The State Key Laboratory of Mechanics and Control of Mechanical Structures and Laboratory of Intelligent Nano Materials and Devices of Ministry of EducationCollege of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2021年第14卷第7期

页      面：2337-2344页

核心收录：

学科分类：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）] 

基　　金：This work was supported by the National Natural Science Foundation of China(No.61774085) the Natural Science Foundation of Jiangsu Province(No.BK20201300) the Six Talent Peaks Project in Jiangsu Province(No.XCL-046) the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures(NUAA)(No.MCMS-I0420G02) the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：borophene graphene heterostructure humidity sensor two-dimensional materials 

摘      要：Heterostructure has triggered a surge of interest due to its synergistic effects between two different layers,which contributes to desirable physical properties for extensive potential *** stable borophene is becoming a promising candidate for constructing two-dimensional(2D)heterostructures,but it is rarely prepared by suitable synthesis conditions ***,we demonstrate that a novel heterostructure composed of hydrogenated borophene and graphene can be prepared by heating the mixture of sodium borohydride and few-layered graphene followed by stepwise and in situ thermal decomposition of sodium borohydride under high-purity hydrogen as the carrier *** fabricated borophene–graphene heterostructure humidity sensor shows ultrahigh sensitivity,fast response,and long-time *** sensitivity of the fabricated borophene-based sensor is near 700 times higher than that of pristine graphene one at the relative humidity of 85%*** sensitivity of the sensor is highest among all the reported chemiresistive sensors based on 2D ***,the performance of the borophene–graphene flexible sensor maintains good stability after bending,which shows that the borophene-based heterostructures can be applied in wearable *** observed high performance can be ascribed to the well-established charge transfer mechanism upon H2O molecule *** study further promotes the fundamental studies of interfacial effects and interactions between boron-based 2D heterostructures and chemical species.