• High-performance room-temperature formic acid vapor sensors based on multi-walled carbon nanotubes/polypyrrole composites

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Metadata

Document Title

High-performance room-temperature formic acid vapor sensors based on multi-walled carbon nanotubes/polypyrrole composites

Author

Janmanee R.; Phanphaisarn W.; Sriwichai S.; Wisitsoraat A.; Liewhiran C.

Name from Authors Collection

Janmanee R.

|

Phanphaisarn W.

|

Sriwichai S.

|

Wisitsoraat A.(8532633700)

|

Liewhiran C.

Scopus Author ID

16052921800

ORCID ID

NULL

Affiliations

Chemistry program, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand; Physics program, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand; Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Klong Luang, 12120, Thailand; Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand

Type

Article

Source Title

Talanta Open

ISSN

26668319

Year

2025

Volume

11

Open Access

All Open Access; Gold Open Access

Publisher

Elsevier B.V.

DOI

10.1016/j.talo.2025.100419

Abstract

In this research, functionalized multi-walled carbon nanotubes/polypyrrole (fMWCNTs/PPy) composites were synthesized by in-situ oxidative polymerization approach to fabricate sensing films for room-temperature formic acid (HCOOH) detection. The material properties were characterized by X-ray spectroscopy, infrared spectroscopy, transmission electron microscopy, and nitrogen adsorption analysis. The study results confirmed the formation of well-defined multiwalled nanotubes embedded on PPy nanoparticulate matrix with varying MWCNTs loading levels. From gas-sensing measurement results, the addition of 1 %wt fMWCNTs during PPy polymerization greatly enhanced the sensor response from 2.6 to ∼900 towards 1 vol% HCOOH with excellent selectivity against H2, CO2, CH4, C2H5OH, CH3OH, and C3H6O at 25 °C. The dispersion of functionalized MWCNTs-PPy heterointerfaces could play an important role in the significant improvement of gas-sensing properties. Therefore, the functionalized MWCNTs-embedded PPy-based sensor would be an attractive choice for formic acid detection at room temperature and useful in medical and environmental applications. © 2025

Industrial Classification

Manufacturing - Electronics

Knowledge Taxonomy Level 1

Physical sciences

Knowledge Taxonomy Level 2

Electronics nanosensors technology

Knowledge Taxonomy Level 3

Electronics nanosensors technology

License

CC BY-NC

Rights

Authors

Publication Source

Scopus

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