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Detection of formic acid and acetic acid gases by a QCM sensor coated with an acidified multi-walled carbon nanotube membrane
Cai, Jingfang1; Yan, Ying1,2; Wang, Weiwei1; Ma, Yuanyuan1; Cai, Lankun1; Wu, Laiming3; Zhou, Hao3
2021-10-14
Source PublicationENVIRONMENTAL TECHNOLOGY
ISSN0959-3330
Pages11
Corresponding AuthorZhou, Hao(haoshm1970@163.com)
AbstractIn this paper, the acidified multi-walled carbon nanotubes (MWCNTs) film was coated on the quartz crystal microbalance (QCM) to prepare a high-performance sensor for the real-time detection of organic acid gases. The material characteristics of the thin films were analysed by field emission scanning electro microscopy (FESEM), Raman spectra and X-ray photoelectron spectroscopy (XPS). The organic acid vapours' sensing results indicated that acidized-MWCNTs thin film exhibited good frequency response, repeatability, reversibility and stability. There is a clear linear relationship between the frequency offset and the organic acid vapours with concentration below 5.0 ppm, and the detection limit of 0.77 and 0.73 ppm for formic and acetic acid vapours, respectively. The sensor shows the highest response to formic acid vapour than acetic acid vapour which may be ascribed to molecular polarity. Furthermore, a sensing mechanism model was introduced to understand the adsorption reaction between organic acid molecules and acidized-MWCNTs. This paper proves that acidized-MWCNTs is a potential and suitable material for organic acid vapour detection when combined with a QCM sensor.
KeywordQCM acidized-MMWCNTs formic acid vapour acetic acid vapour gas sensor
DOI10.1080/09593330.2021.1983025
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2020YFC1522500] ; Open Fund of Shandong Key Laboratory of Corrosion Science
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000707820400001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/176685
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorZhou, Hao
Affiliation1.East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, Jinan, Shandong, Peoples R China
3.Shanghai Museum, 1118 Wulong Rd, Shanghai 200050, Peoples R China
Recommended Citation
GB/T 7714
Cai, Jingfang,Yan, Ying,Wang, Weiwei,et al. Detection of formic acid and acetic acid gases by a QCM sensor coated with an acidified multi-walled carbon nanotube membrane[J]. ENVIRONMENTAL TECHNOLOGY,2021:11.
APA Cai, Jingfang.,Yan, Ying.,Wang, Weiwei.,Ma, Yuanyuan.,Cai, Lankun.,...&Zhou, Hao.(2021).Detection of formic acid and acetic acid gases by a QCM sensor coated with an acidified multi-walled carbon nanotube membrane.ENVIRONMENTAL TECHNOLOGY,11.
MLA Cai, Jingfang,et al."Detection of formic acid and acetic acid gases by a QCM sensor coated with an acidified multi-walled carbon nanotube membrane".ENVIRONMENTAL TECHNOLOGY (2021):11.
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