One-Step Synthesis of Au/SnO2/RGO Nanocomposites and Their VOC Sensing Properties

• Published in: IEEE transactions on nanotechnology Vol. 17; no. 2; pp. 212 - 219
• Main Authors: Meng, Fanli, Zheng, Hanxiong, Chang, Yuanlong, Zhao, Yong, Li, Minqiang, Wang, Chen, Sun, Yufeng, Liu, Jinhuai
• Format: Journal Article
• Language: English
• Published: IEEE 01.03.2018
• Subjects: Au/SnO<named-content xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" content-type="math" xlink:type="simple"> <inline-formula> <tex-math notation="LaTeX"> _2</tex-math> </inline-formula> </named-content>/RGO; Ethanol; Gold; Graphene; Nanocomposites; Nanoparticles; One-step synthesis; sensing; Sensors; VOCs
• ISSN: 1536-125X; 1941-0085
• DOI: 10.1109/TNANO.2017.2789225

Au/SnO 2 /reduced graphene oxide (RGO) nanocomposites have been successfully synthesized by a one-step method. The sample was characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectrometry to explore the formation mechanism. The gas sensing properties of the synthesized Au/SnO 2 /RGO nanocomposites have been investigated, which revealed that Au nanoparticles obviously enhanced the sensitivity by comparing with the SnO 2 /RGO nanocomposites and pure SnO 2 . The Au/SnO 2 /RGO nanocomposites showed higher response to ethanol than other VOCs. They also exhibited a wide linear detection range from 1 to 1000 ppm and high reproducibility to ethanol. Here, the sensing mechanism of the Au/SnO 2 /RGO nanocomposites has also been discussed in detail.