Low temperature gas sensing properties of Graphene Oxide/SnO2 nanowires composite for H-2

In this work Graphene Oxide (GO) and SnO2 nanowires (NWs) composite
sensing performance were studied. Single crystal SnO2 NWs were directly
grown by thermal evaporation method and GO was successfully synthesized
using modified Hummers method. RF magnetron sputtered Pt particles were
used as a catalyst for the growth of SnO2 NWs. Drop cast technique was
used to deposited GO on top of the SnO2 NWs. FE-SEM (LEO 1525) was used
to investigate the morphology of SnO2 NWs and GO. Fabricated sensors
were tested towards various concentration of H-2 at different working
temperatures. This GO/SnO2 hybrid sensors show a reversible response to
H-2 at low operating temperature. (C) 2016 The Authors. Published by
Elsevier Ltd.