Facile synthesis of In2O3 microcubes with exposed {100} facets as gas sensing material for selective detection of ethanol vapor

The rational designs of metal oxides with well exposed facets have stimulated tremendous attentions due to their vital importance for practical applications. In2O3 microcubes (In2O3 MCs) were synthesized by a simple hydro-thermal method with cubic structure and high surface area. Various techniques were employed for characterization of the structure and morphology of the as-prepared In2O3 MCs. The as-synthesized In2O3 MCs, when utilized as gas sensing material, exhibited high sensitivity and selectivity towards ethanol vapor. Such outstanding gas sensing performance of In2O3 MCs benefits from their large specific surface area and exposure of {1 0 0} facets. (C) 2017 Elsevier B.V. All rights reserved.