Ultrathin Tungsten Oxide Nanowires/Reduced Graphene Oxide Composites for Toluene Sensing

• Published in: Sensors (Basel, Switzerland) Vol. 17; no. 10; p. 2245
• Main Authors: Hassan, Muhammad, Wang, Zhi-Hua, Huang, Wei-Ran, Li, Min-Qiang, Liu, Jian-Wei, Chen, Jia-Fu
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 29.09.2017; MDPI
• Subjects: Ethanol; Fourier transforms; Functional groups; Gas sensors; Gases; Graphene; Graphite; Humidity; Laboratories; Low cost; Metal oxides; nanocomposites; Nanocrystals; Nanomaterials; Nanowires; Radiation; Sensors; Toluene; toluene sensing; Tungsten; ultrathin nanowires; W18O49 nanowires; W18O49 nanowires; ultrathin nanowires; toluene sensing; nanocomposites
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s17102245

Graphene-based composites have gained great attention in the field of gas sensor fabrication due to their higher surface area with additional functional groups. Decorating one-dimensional (1D) semiconductor nanomaterials on graphene also show potential benefits in gas sensing applications. Here we demonstrate the one-pot and low cost synthesis of W O NWs/rGO composites with different amount of reduced graphene oxide (rGO) which show excellent gas-sensing properties towards toluene and strong dependence on their chemical composition. As compared to pure W O NWs, an improved gas sensing response (2.8 times higher) was achieved in case of W O NWs composite with 0.5 wt. % rGO. Promisingly, this strategy can be extended to prepare other nanowire based composites with excellent gas-sensing performance.