In this work, 2-butanone-sensitive Ag-decorated In2O3 nanocomposites were successfully prepared using a facile one-step hydrothermal method to enhance the sensing performance of nanocubes. The methods scanning electron microscopy (SEM), transmission (TEM), high-resolution (HRTEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) analysis, and photoelectron (XPS) used observe morpho...