High Surface Area MoS2/Graphene Hybrid Aerogel for Ultrasensitive NO2 Detection
High Surface Area MoS2/Graphene Hybrid Aerogel for Ultrasensitive NO2 Detection
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DOI：
10.1002/adfm.201601562
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发表时间：
2016-07-25
影响因子：
19
通讯作者：
Maboudian, Roya
中科院分区：
文献类型：
--
作者：
Long, Hu;Harley-Trochimczyk, Anna;Maboudian, Roya
一种MoS 2/石墨烯杂化气凝胶，其由涂覆高表面积石墨烯气凝胶支架的二维MoS 2片合成，并用于超灵敏的NO2检测。石墨烯和MoS 2的组合导致改善的传感特性，其中石墨烯支架提供高比表面积和高电导率和热导率，单层至少层MoS 2片提供对NO2的高灵敏度和选择性。混合气凝胶被集成到一个低功耗的微加热器平台上，以探测气体传感性能。在室温下，该传感器表现出50 ppb NO2的超低检测限。通过将材料加热到200摄氏度，达到最终信号的90%的响应和恢复时间减少到
A MoS2/graphene hybrid aerogel synthesized with two-dimensional MoS2 sheets coating a high surface area graphene aerogel scaffold is characterized and used for ultrasensitive NO2 detection. The combination of graphene and MoS2 leads to improved sensing properties with the graphene scaffold providing high specific surface area and high electrical and thermal conductivity and the single to few-layer MoS2 sheets providing high sensitivity and selectivity to NO2. The hybrid aerogel is integrated onto a low-power micro-heater platform to probe the gas sensing performance. At room temperature, the sensor exhibits an ultralow detection limit of 50 ppb NO2. By heating the material to 200 degrees C, the response and recovery times to reach 90% of the final signal decrease to