Synthesis of Crystalline/Amorphous Core/Shell MoO3 Composites through a Controlled Dehydration Route and Their Enhanced Ethanol Sensing Properties

• DOI: 10.1021/cg401384t
• Publication Date: 2014-01-03T21:06:59Z
• Authors: Longqiang Wang; Peng Gao; Di Bao; Ying Wang; Yujin Chen; Cheng Chang; Guobao Li; Piaoping Yang
• Keywords: Specific surface area

Considering the specific surface area, flexible structures, high porosity, and a homogeneous isotropic nature down to atomic scale possessed by amorphous nanostructure, an interesting controlled dehydration route has been developed synthesize crystalline/amorphous core/shell (C/A-C/S) MoO3 nanocomposite, in which macroisopolyanion [Mo36O112(H2O)16]8– ({Mo36}) was successfully assembled into one-dimensional connection underwent deficient crystallization induced prospective infiltrative process. The as-obtained samples’ affirmative composition composite structure have further demonstrated XRD, TEM, HRTEM, Raman spectra measurements. As result of this special C/A-C/S structure, exhibited selectivity higher sensor response, at lower working temperature (180 °C) ethanol gas compared with other 1D micro/nanostructures reported previously.