Improvement in ammonia gas sensing behavior by polypyrrole/ multi-walled carbon nanotubes composites

Woo Kyung Jang; Jumi Yun; Kim， Hyung-il (김형일); Lee, Young-Seak (이영석)

Improvement in ammonia gas sensing behavior by polypyrrole/ multi-walled carbon nanotubes composites

Carbon Letters
Abbr : Carbon Lett.
2012, 13(2), pp.88-93
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General

Woo Kyung Jang ¹, Jumi Yun ¹, Kim， Hyung-il ², Lee, Young-Seak ²

¹Chungnam National University
²충남대학교

Accredited

ABSTRACT

Polypyrrole (PPy)/multi-walled carbon nanotubes (MWCNTs) composites were prepared by in situ polymerization of pyrrole on the surface of MWCNTs templates to improve the ammonia gas sensing properties. PPy morphologies, formed on the surface of MWCNTs, were investigated by field emission scanning electron microscopy. The thermal stabilities of the PPy/MWCNTs composites were improved as the content of MWCNTs increased due to the higher thermal stability of the MWCNTs. PPy/MWCNTs composites showed synergistic effects in improving the ammonia gas sensing properties, attributed to the combination of efficient electron transfer between PPy/MWCNTs composites and ammonia gas, and the reproducible electrical resistance variation on PPy during the gas sensing process.

KEYWORDS

ammonia, polypyrrole, multi-walled carbon nanotube, composite, gas sensor

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-02)

Total Citation Counts(KCI+WOS) (23) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

* References for papers published after 2023 are currently being built.

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04