文献类型： 外文期刊
第一作者： Li, Weiwei
作者： Li, Weiwei;Cai, Li;Li, Weiwei;Li, Xian;Sun, Yilin;Sun, Mengxing;Xie, Dan;Li, Xian
作者机构：
关键词： Reduced Graphene Oxide; Ammonia; Gas Sensors; Room Temperature
期刊名称：JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY （ 影响因子：1.134； 五年影响因子：0.999 ）
ISSN： 1533-4880
年卷期： 2018 年 18 卷 11 期
页码：
收录情况： SCI
摘要： Reduced graphene oxide (rGO) has attracted an enormous interest as a promising candidate material for gas detection due to its unique atomic structure. In the present work, rGO films were fabricated by the layer-by-layer (LBL) self-assembly and thermal reduction method for detecting ammonia (NH3) gas at room temperature. The single-and multi-layer rGO films exhibited high sensitivity and fast sensing performance to 5-50 ppm NH3, among which bi-layer rGO film showed the best sensitivity, recovery and the shortest response/recovery time to different concentrations of NH3. For bi-layer rGO film, the shortest response time to 50 ppm NH3 was 24 s and the recovery rate to 5 ppm NH3 was 98%, respectively. The sensing mechanism is attributed to the thinner rGO films and a larger specific surface area offered by the LBL self-assembly.
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