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Journal of Nanomaterials
Volume 2018 (2018), Article ID 6519694, 9 pages
Research Article

Room Temperature Detection of Acetone by a PANI/Cellulose/WO3 Electrochemical Sensor

1Polymer Group, Engineering and Chemistry of Materials Department, Center of Research on Advanced Materials (CIMAV), Av. Miguel de Cervantes 120, 31136 Chihuahua, CHIH, Mexico
2CONACYT–CIMAV, Av. Miguel de Cervantes 120, 31136 Chihuahua, CHIH, Mexico
3Center of Research on Advanced Materials (CIMAV), Ejido Arroyo Seco, 34147 Durango, DGO, Mexico

Correspondence should be addressed to Alejandro Vega-Rios

Received 4 September 2017; Revised 13 November 2017; Accepted 6 December 2017; Published 8 January 2018

Academic Editor: Vincenzo Baglio

Copyright © 2018 Eider Aparicio-Martínez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chemical sensing based on semiconducting metal oxides has been largely proposed for acetone sensing, although some major technical challenges such as high operating temperature still remain unsolved. This work presents the development of an electrochemical sensor based on nanostructured PANI/cellulose/WO3 composite for acetone detection at room temperature. The synthesized materials for sensor preparation were polyaniline (PANI) with a conductivity of 13.9 S/cm and tungsten trioxide (WO3) in monoclinic phase doped with cellulose as carbon source. The synthesized materials were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), cyclic voltammetry (CV), and Raman spectroscopy. The composite was applied for acetone detection in the range of 0 to 100 ppmv at room temperature with electrochemical impedance spectroscopy (EIS) for monitoring resistance changes proportional to acetone concentration. The developed sensor achieved a calculated limit of detection of 10 ppm and of 0.99415 with a RSD of 5% () at room temperature. According to these results, the developed sensor is suitable for acetone sensing at room temperatures without the major shortcomings of larger systems required by high operating temperatures.