Au nanoparticles modified MoO₃ nanosheets with their enhanced properties for gas sensing

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• 作者：Huihui YanAuthor Vitae ; Peng Song ; ^{mse_songp@ujn.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Su ZhangAuthor Vitae ; Jia ZhangAuthor Vitae ; Zhongxi YangAuthor Vitae ; Qi Wang ; ^{mse_wangq@ujn.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：MoO3 nanosheets ; Au nanoparticles ; Nanocomposites ; Gas sensors
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2016
• 出版时间：29 November 2016
• 年：2016
• 卷：236
• 期：Complete
• 页码：201-207
• 全文大小：1483 K

文摘

Two-dimensional nanostructures with controlled morphology and dimensionality make them a promising candidate for high-performance sensing materials. Meanwhile, surface modification with noble metals is considered as an effective strategy to enhance gas sensing performance of metal oxide-based gas sensors. In this work, a novel gas sensing material was synthesized by decorating Au nanoparticles on molybdenum oxide nanosheets. The morphology and structure of the samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The hexagonal MoO₃ nanosheets are about 600 nm in diameter, and the scale of Au nanoparticles are around 10–15 nm. Furthermore, owing to the composite structure, the sensor based on Au@MoO₃ nanocomposites showed superior gas sensing performance towards ethanol and it may have potential applications in the detection of ethanol vapors.