Acetone gas sensor based on α-Ag2WO4 nanorods obtained via a microwaveassisted hydrothermal route

This manuscript addresses the synthesis of one-dimensional (1D) α-Ag2WO4 nanorod-like structures via a microwave-assisted hydrothermal method to be used as an acetone gas sensor. The nanorods showed excellent gas-sensing performance, evidenced by their sensor response and repeatability, as well as a good range of detection (0.5–20.0 ppm). The manuscript also proposes an easy and efficient way of obtaining 1-D α-Ag2WO4 nanorods that exhibit remarkable acetone sensing properties.We are grateful for the financial support from Brazilian research funding agencies FAPESP and CNPq (under grants No. 2013/09573-3, 2013/07296-2, 2012/15170-6, 479644/2012-8, 442076/2014-2, and 304531/2013-8). This research was partially performed at the Brazilian Nanotechnology National Laboratory (LNNano), Microfabrication laboratory (Project 17168), Campinas, SP, Brazil. J. Andrés acknowledges Generalitat Valenciana (Prometeo/2009/053 project), Ministerio de Ciencia e Innovacion (CTO2009-14541-C02 project) Programa de Cooperacion Científica con Iberoamerica (Brazil), and Ministerio de Educacion (PHB2009-0065-PC project)