Article ID Journal Published Year Pages File Type
5459848 Journal of Alloys and Compounds 2017 31 Pages PDF
Abstract
Nanocomposites constructed by combining graphene (G) with oxide semiconductors have gained tremendous recent attentions in the field of gas sensors. In this work, we present a facile, green, and low-cost solvothermal process to synthesize the G-W18O49 nanocomposites with different G contents. The gas-sensing properties of the G-W18O49 nanocomposites towards ethanol and acetone vapors were systematically studied. Results showed that the amount of G had obvious influence on both the morphologies and the gas-sensing behaviors of the G-W18O49 nanocomposites. With low amount of 0.5 wt% G, the G-W18O49 nanocomposites exhibited significantly enhanced gas-sensing properties compared to pure W18O49 nanorods, which can be attributed to high yield and uniform distribution of the W18O49 nanorods decorated on the G surfaces as well as the synergistic effects between the G and W18O49 nanorods. The G-W18O49 nanocomposites are more sensitive to acetone than to ethanol, making them promising candidates for novel acetone sensors. This work shed light on the relationship between the G content and the gas-sensing performance of the G-W18O49 nanocomposites and could be extended to the development of other hybrid materials for gas-sensing applications.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
Authors
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