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Journal of Chemistry
Volume 2017, Article ID 2346895, 9 pages
Research Article

Amperometric Formaldehyde Sensor Based on a Pd Nanocrystal Modified C/Co2P Electrode

1Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, Department of Materials Science, Jilin Jianzhu University, Changchun 130118, China
2College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130012, China

Correspondence should be addressed to Xiaotian Yang; moc.361@txynah

Received 20 June 2017; Revised 27 September 2017; Accepted 10 October 2017; Published 12 November 2017

Academic Editor: C. R. Raj

Copyright © 2017 Huan Wang 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.

Supplementary Material

Fig. S1 Compare to C/Pd (black line), the Pd3d5/2 and Pd3d3/2 peaks of C/Co2P/Pd (red line) shift from 335.8 and 341.2 eV to 335.2 eV and 340.4 eV respectively. This significant shift indicates that there may exist a strong electronic interaction between Co2P and Pd. Fig. S2 Amperometric current response of the C/Co2P/Pd composite based gas sensor continuously exposure to 10 ppm formaldehyde within 500 s. The amperometic response with long time test for the C/Co2P/Pd sensor was studied under continuous 10 ppm formaldehyde flow. No obvious decrease is observed in 500 s indicating the good stability of the C/Co2P/Pd sensor.

  1. Supplementary Material