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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：集成电路学院副院长
性别：男
毕业院校：英国利兹大学
学位：博士
所在单位：集成电路学院
学科：微电子学与固体电子学
联系方式：Email：lixg@dlut.edu.cn
电子邮箱：lixg@dlut.edu.cn
Reduced graphene oxide hybridized with WS2 nanoflakes based heterojunctions for selective ammonia sensors at room temperature
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论文类型：期刊论文
发表时间：2019-03-01
发表刊物：SENSORS AND ACTUATORS B-CHEMICAL
收录刊物：SCIE、EI
卷号：282
页面范围：290-299
ISSN号：0925-4005
关键字：rGO/WS2 heterojunctions; Ammonia sensors; Room temperature gas sensors
摘要：Hybrid of the two dimensional nanostructured reduced graphene oxide (rGO) and WS2 has been investigated for a room temperature ammonia sensor. The formed rGO/WS2 heterojunctions prepared by one-step hydrothermal synthesis indicated a good sensitivity to different concentrations of ammonia from 10 ppm to 50 ppm at room temperature. The WS2 nanoflakes doped in the heterojunction plays significant role in the enhanced response through the introduction of more hydroxyls in rGO and the extra Lewis acid active centers. The sensor also shows an excellent selectivity to NO2, alcohols, formaldehyde, acetone and benzene and a good long term stability indicating a potential to be employed as a room temperature NH3 sensor.