基于二硫化钼/石墨烯复合材料的汞蒸气传感器  

Mercury Vapor Sensor Based on Composites of MoS2/Graphene

作　　者：马占辉 姚杰 张振业 张行 张晓君 孙墨杰[3] MA Zhanhui;YAO Jie;ZHANG Zhenye;ZHANG Hang;ZHANG Xiaojun;SUN Mojie(College of Electrical and Information Engineering, Beihua University, Jilin 132021, China;Huadian Electric Power Research Institute Co., LTD., Hangzhou 310030, China;Sci-Tech Center for Clean Conversion and High-valued Utilization of Biomass, Northeast Electric Power University, Jilin 132012, China)

机构地区：[1]北华大学电气与信息工程学院,吉林132021 [2]华电电力科学研究院有限公司,杭州310030 [3]东北电力大学,吉林省生物质清洁转化与高值化利用科技创新中心,吉林132012

出　　处：《人工晶体学报》2020年第6期1107-1111,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(31470787);吉林省科技发展计划项目(20170204015SF)。

摘　　要：采用水热法合成MoS2/石墨烯复合材料并制作气敏元件,进行汞蒸气气敏性质测试。当石墨烯与MoS2的摩尔比为0.5%时,复合材料对汞蒸气的灵敏度最佳;在2.18~126.18 mg/m3浓度范围内,传感器的灵敏度具有良好的线性度;在汞蒸气浓度29.48 mg/m3条件下,传感器的响应时间为8.5 min,恢复时间为9.0 min。传感器具有优良的重复性、稳定性和选择性,传感器在燃煤电厂烟气常见成分H2S、NH3和NO2三种气体中没有明显的响应,可以应用于实际检测。The MoS2/graphene composites were prepared by hydrothermal method.Then the composites were fabricated to gas sensors for exploring the sensing characteristics of mercury vapor.When the molar ratio of graphene and MoS2 was 0.5%,the composites has the best gas sensor response.The concentration in 2.18-126.18 mg/m3 of mercury vapor was tested,and the sensor show excellent linearity.When the concentration of mercury vapor is 29.48 mg/m3,the response time of the sensor is 8.5 min and the recovery time is 9.0 min.The sensor has excellent repeatability,stability and selectivity.Other common gases in coal-fired power plant flue gas such as H2S,NH3 and NO2 has no obvious response,and the sensor can be used for practical detection.

关 键 词：汞蒸气传感器 二硫化钼 石墨烯 复合材料 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]