The development of sensitive graphene-based surface acoustic wave sensors for NO2 detection at room temperature

Author:

Buiculescu Valentin,Dinu Livia Alexandra,Veca Lucia Monica,Pârvulescu Cătălin,Mihai Madalina,Brîncoveanu Oana,Comănescu Florin,Brașoveanu Costin,Stoian Marius,Baracu Angela Mihaela

Abstract

AbstractBilayer graphene (Bl-Gr) and sulphur-doped graphene (S-Gr) have been integrated with LiTaOsurface acustic wave (SAW) sensors to enhance the performance of NO2 detection at room temperature. The sensitivity of the Bl-Gr SAW sensors toward NO2, measured at room temperature, was 0.29º/ppm, with a limit of detection of 0.068 ppm. The S-Gr SAW sensors showed 0.19º/ppm sensitivity and a limit of detection of 0.140 ppm. The origin of these high sensitivities was attributed to the mass loading and elastic effects of the graphene-based sensing materials, with surface changes caused by the absorption of the NO2 molecules on the sensing films. Although there are no significant differences regarding the sensitivity and detection limit of the two types of sensors, the measurements in the presence of interferent gases and various humidity conditions outlined much better selectivity and sensing performances towards NO2 gas for the Bl-Gr SAW sensors. Graphical Abstract

Funder

Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii

Publisher

Springer Science and Business Media LLC

Reference44 articles.

1. Khomenko S, Cirach M, Pereira-Barboza E et al (2021) Premature mortality due to air pollution in European cities: a health impact assessment. Lancet Planet Health 5:e121–e134. https://doi.org/10.1016/S2542-5196(20)30272-2

2. World Health Organization Regional Office for Europe (2003) Health aspects of air pollution with particulate matter, ozone and nitrogen dioxide, chapter 7 nitrogen dioxide. World Health Organization (WHO). https://iris.who.int/bitstream/10665/107478/1/E79097.pdf. Accessed 12 Apr 2024

3. European Environment Agency (2020) Air quality in Europe - 2020 report, EEA Report No 09/2020. Publications Office of the European Union. https://doi.org/10.2800/786656

4. Commission Directive (EU) (2023) Substance Infocard - Nitrogen dioxide. European Chemicals Agency. https://echa.europa.eu/substance-information/-/substanceinfo/100.030.234. Accessed 12 Apr 2024

5. Directorate of Technical Support and Emergency Management (DTSEM) (2021) Nitrogen dioxide. Occupational safety and health administration. https://www.osha.gov/chemicaldata/21. Accessed 12 Apr 2024

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3