Graphene-like nano-sheets for surface acoustic wave gas sensor applications

• DOI: 10.1016/j.cplett.2008.11.039
• Publication Date: 2008-11-26T14:14:18Z
• Authors: R. Arsat; M. Breedon; M. Shafiei; P.G. Spizziri; S. Gilje; R.B. Kaner; K. Kalantar-zadeh; W. Wlodarski
• Keywords: 02 engineering and technology; 0210 nano-technology; 620; 543

The gas sensing properties of graphene-like nano-sheets deposited on 36° YX lithium tantalate (LiTaO3) surface acoustic wave (SAW) transducers are reported. The thin graphene-like nano-sheets were produced via the reduction of graphite oxide which was deposited on SAW interdigitated transducers (IDTs). Their sensing performance was assessed towards hydrogen (H2) and carbon monoxide (CO) in a synthetic air carrier gas at room temperature (25 °C) and 40 °C. Raman and X-ray photoelectron spectroscopy (XPS) revealed that the deposited graphite oxide (GO) was not completely reduced creating small, graphitic nanocrystals ∼2.7 nm in size. © 2008 Elsevier B.V.