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Sensors 2015, 15(1), 352-364;

Fabrication of a SnO2-Based Acetone Gas Sensor Enhanced by Molecular Imprinting

Institute of Nanoscience and Nanotechnology, Central China Normal University, Wuhan 430079, China
Author to whom correspondence should be addressed.
Received: 23 November 2014 / Accepted: 22 December 2014 / Published: 26 December 2014
(This article belongs to the Section Chemical Sensors)
Full-Text   |   PDF [1277 KB, uploaded 26 December 2014]


This work presents a new route to design a highly sensitive SnO2–based sensor for acetone gas enhanced by the molecular imprinting technique. Unassisted and acetone-assisted thermal synthesis methods are used to synthesis SnO2 nanomaterials. The prepared SnO2 nanomaterials have been characterized by X-ray powder diffraction, scanning electron microscopy and N2 adsorption−desorption. Four types of SnO2 films were obtained by mixing pure deionized water and liquid acetone with the two types of as-prepared powders, respectively. The acetone gas sensing properties of sensors coated by these films were evaluated. Testing results reveal that the sensor coated by the film fabricated by mixing liquid acetone with the SnO2 nanomaterial synthesized by the acetone-assisted thermal method exhibits the best acetone gas sensing performance. The sensor is optimized for the smooth adsorption and desorption of acetone gas thanks to the participation of acetone both in the procedure of synthesis of the SnO2 nanomaterial and the device fabrication, which results in a distinct response–recovery behavior. View Full-Text
Keywords: SnO2; molecular imprinting; acetone gas sensor; clusters; 17O-NMR SnO2; molecular imprinting; acetone gas sensor; clusters; 17O-NMR
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 (CC BY 4.0).

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Tan, W.; Ruan, X.; Yu, Q.; Yu, Z.; Huang, X. Fabrication of a SnO2-Based Acetone Gas Sensor Enhanced by Molecular Imprinting. Sensors 2015, 15, 352-364.

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