Graphene Oxide-Tin Dioxide-Titanium Dioxide (GO-SnO2-TiO2) ternary nanocomposite were synthesized via solvothermal route and used for acetone vapor detection in the lower concentration range as in diabetes mellitus patient's breath. The morphology and composition of the GO-SnO2-TiO2 were characterized by Scanning electron microscope (SEM), Transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR). The gas sensing properties of the GO-SnO2-TiO2 nanocomposite film were investigated under various operating temperature, and the optimal working temperature of 200 degrees C was determined. The GO-SnO2-TiO2 sensor exhibits superior gas sensing performance toward acetone in the range of 0.25 ppm to 30 ppm as compared to the GO-SnO2, GO-TiO2 binary counterparts. The gas sensing mechanism of the proposed ternary nanocomposite was attributed to the good synergistic effect between the materials, including high availability of oxygen vacant facets and special interactions at the SnO2-TiO2 heterojunction. The experimented sensor properties indicate that the prepared GO-SnO2-TiO2 composite is an excellent candidate for selective detection of acetone gas in diabetes mellitus breath at low temperature. (C) 2017 Elsevier B.V. All rights reserved.