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Improvement of Toluene-Sensing Performance of SnO2 Nanofibers by Pt Functionalization

Department of Materials Science and Engineering, Inha University, Incheon 402-751, Korea
Author to whom correspondence should be addressed.
Academic Editor: W. Rudolf Seitz
Sensors 2016, 16(11), 1857;
Received: 16 September 2016 / Revised: 28 October 2016 / Accepted: 2 November 2016 / Published: 4 November 2016
(This article belongs to the Special Issue Chemiresistive Sensors)
PDF [5862 KB, uploaded 4 November 2016]


Functionalization of metal nanoparticles (NPs) on oxide materials is a commonly employed technique for enhancing the sensitivity and selectivity of materials for gas sensing applications. In this study, we functionalized electrospinning-synthesized SnO2 nanofibers (NFs) with various amounts of Pt NPs to enhance the toluene-sensing properties. In particular, Pt NPs were prepared by deposition of Pt films by sputtering and subsequent heat treatment. Electronic and chemical sensitizations by the Pt NPs were responsible for the improved toluene sensitivity. The best sensing properties were achieved at an optimized amount of Pt NPs, showing a volcano shape in relation to the amount of Pt NPs. The method used in this study is useful for the development of toluene-sensitive and -selective chemiresistive NF-based gas sensors. View Full-Text
Keywords: Pt; SnO2; gas sensor; metal nanoparticle; sensitization Pt; SnO2; gas sensor; metal nanoparticle; sensitization

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Kim, J.-H.; Abideen, Z.U.; Zheng, Y.; Kim, S.S. Improvement of Toluene-Sensing Performance of SnO2 Nanofibers by Pt Functionalization. Sensors 2016, 16, 1857.

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