Enhanced NH 3 sensing properties of carboxyl functionalized carbon nanocoil

Abstract Based on Quartz Crystal Microbalance (QCM) sensing platform, modifying functional groups was usually used to improve the performance of sensing materials. In this work, we reported a novel sensing material, carboxyl functionalized carbon nanocoil by acidification treatment. It was found tha...

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Bibliographic Details
Published in:Materials research express 2020-07, Vol.7 (7), p.75014
Main Authors: Wang, Luyu, Song, Jia
Format: Article
Language:English
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Summary:Abstract Based on Quartz Crystal Microbalance (QCM) sensing platform, modifying functional groups was usually used to improve the performance of sensing materials. In this work, we reported a novel sensing material, carboxyl functionalized carbon nanocoil by acidification treatment. It was found that carboxyl functionalized carbon nanocoil had excellent reversible response to ammonia (NH 3 ), and the response to 50 ppm NH 3 was as high as 8.1 Hz. As a contrast, pristine carbon nanocoil had only 2 Hz response to 50 ppm NH 3 . The enhanced response should be ascribed to the hydrogen bond adsorption between carboxyl gropus and NH 3 molecules. These results demonstrated that carboxyl functionalization could improve the NH 3 sensing performance of carbon nanocoil, which has potential in monitoring NH 3 in the future.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/aba806