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Nitrogen-Containing Tubular Hollow Carbon Frameworks: A Nongraphitic Carbon for a Robust Room Temperature Hydrogen Gas Sensing Application
J. Harjwani, M. Baro,
Published in Institute of Electrical and Electronics Engineers Inc.
Volume: 5
Issue: 2
We report, for the first time, polypyrrole-derived nitrogen-containing tubular hollow carbon (NTHC) frameworks for hydrogen (H2) gas sensing application. NTHC was synthesized simply by pyrolysis of tubular polypyrrole nanostructure, which developed carbon nanostructure of high surface area with numerous micromesopores. The surface of the carbon nanostructure was uniformly decorated with platinum nanoparticles (Pt NPs). The Pt/NTHC sensor, fabricated using a facile drop-casting method, shows good repeatability and complete recovery at room temperature and achieves twofold higher sensitivity compared to Pt NPs dispersed multiwalled carbon nanotubes. The sensor shows interesting gas sensing behavior (conversion of p-type to n-type) during exposure to H2. The possible role of N-doping type in the sensing behavior is discussed. © 2017 IEEE.
About the journal
JournalData powered by TypesetIEEE Sensors Letters
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.