不同形貌MoS_(2)的制备及对NH_(3)气敏性能的研究  

MoS_(2) with Different Morphologies:Preparation and Gas-sensing Property of NH3

作　　者：李文博 钱荣[2] 卓尚军[2] 江鸿[1] 盛成[2] 朱月琴 LI Wenbo;QIAN Rong;ZHUO Shangjun;JIANG Hong;SHENG Cheng;ZHU Yueqin(School of Material Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;National Center for Inorganic Mass Spectrometry Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]上海理工大学材料科学与工程学院,上海200093 [2]中国科学院上海硅酸盐研究所,国家大型科学仪器中心上海无机质谱中心,上海200050

出　　处：《无机材料学报》2022年第10期1135-1140,共6页Journal of Inorganic Materials

基　　金：上海市政府间国际合作项目(19520712000);上海市科技创新行动计划科学仪器领域项目(20142201100);上海无机材料测试技术平台(19DZ2290700)。

摘　　要：氨气污染是空气污染的重要因素之一,且氨气容易诱发急性水肿和呼吸衰竭等疾病,严重危害人体健康。开发高性能氨气传感器已经成为氨气实时监测和安全预警的重要手段。本工作采用水热法制备了纳米花状、纳米球状和纳米片状三种不同形貌的二硫化钼,以此构建了三种MoS_(2)氨气传感器,并利用自主搭建的气敏检测平台进行气敏性能研究。气敏实验结果表明:在三种不同形貌的MoS_(2)氨气传感器中,纳米花状MoS_(2)传感器对于氨气具有更好的响应性能,对于10×10^(-6)NH_(3)的响应值为7.41%,而相同氨气浓度条件下的纳米片状和纳米球状MoS_(2)传感器的响应值分别为2.01%和5.11%。此外,纳米花状MoS_(2)传感器还表现出优异的可重复性、稳定性和选择性。纳米花状MoS_(2)传感器具有优越的响应性能,主要因为其具有较大的比表面积,可为NH_(3)的吸附提供更多的活性位点。本研究为采用MoS_(2)作为基底材料制备高性能的NH_(3)传感器提供了新思路。Ammonia leak is one of the key factors for air pollution,which may cause acute edema,respiratory failure and other diseases harmful to human health.Nowadays,the development of high-performance ammonia sensors has become one of the important means of real-time monitoring and safety warning of ammonia.In this work,three types of molybdenum disulfide with different morphologies of nanoflower,nanosphere and nanosheet were prepared by the hydrothermal method,and three types of MoS_(2) ammonia sensors were constructed.The results of gas-sensing experiments showed that among these MoS_(2) ammonia sensors with different morphologies,the NH_(3) gas sensor made of nanoflowers MoS_(2) performed the best performance with a high response value of 7.41% to 10×10^(-6) NH_(3),while those of the nanosheets MoS_(2) and nanospheres MoS_(2) sensors under the same NH_(3) concentration were 2.01% and 5.11%,respectively.In addition,the nanoflowers MoS_(2) sensor also exhibited excellent repeatability,stability and selectivity.The reason for the superior response performance of the nanoflower MoS_(2) ammonia sensor is mainly due to the larger surface area,which could provide more active sites for the adsorption of ammonia.This study demonstrates an effective way to prepare high-performance NH_(3) sensors with using MoS_(2) as the substrate material.

关 键 词：二硫化钼 纳米花 氨气 传感器 气敏性能 

分 类 号：O649[理学—物理化学]