Electrophoretically deposited graphene oxide/molybdenum disulfide composite on quartz crystal microbalance for ethyl acetate VOC detection

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Science Pub Date : 2024-11-22 DOI:10.1007/s10853-024-10465-2

Wei Yin Lim, Choon-Hian Goh, Keenan Zhihong Yap, Narayanan Ramakrishnan

{"title":"Electrophoretically deposited graphene oxide/molybdenum disulfide composite on quartz crystal microbalance for ethyl acetate VOC detection","authors":"Wei Yin Lim, Choon-Hian Goh, Keenan Zhihong Yap, Narayanan Ramakrishnan","doi":"10.1007/s10853-024-10465-2","DOIUrl":null,"url":null,"abstract":"<div><p>The presence of volatile organic compounds (VOCs) poses significant risks to air quality and human health. However, the existing sensing technologies encounter limitations in efficient sensors fabrication. Techniques like spin coating and drop casting offer rapid deposition, but lack precise control, while layer-by-layer assembly provides superior control but is time-consuming. To address this gap, this study employed electrophoretic deposition (EPD) techniques to rapidly coat graphene oxide (GO)/molybdenum disulfide (MoS<sub>2</sub>) composite on Quartz Crystal Microbalance (QCM) sensors. Various ratios of GO/MoS<sub>2</sub> composites (e.g., GO/MoS<sub>2</sub>_1, GO/MoS<sub>2</sub>_2, and GO/MoS<sub>2</sub>_3), as well as GO and MoS<sub>2</sub> alone were tested to assess their gas sensing capabilities. The GO/MoS<sub>2</sub>_2 composite exhibited a 78% increase in sensitivity to ethyl acetate over other coatings. Surface characterization techniques, including FESEM, EDX, XPS, and Raman spectroscopy, were used to confirm the composite’ structure, and the sensing mechanisms involving adsorption and desorption were discussed. These findings highlight the potential of GO/MoS<sub>2</sub> composites for enhancing VOC detection in gas sensing applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 46","pages":"21277 - 21293"},"PeriodicalIF":3.9000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-024-10465-2","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The presence of volatile organic compounds (VOCs) poses significant risks to air quality and human health. However, the existing sensing technologies encounter limitations in efficient sensors fabrication. Techniques like spin coating and drop casting offer rapid deposition, but lack precise control, while layer-by-layer assembly provides superior control but is time-consuming. To address this gap, this study employed electrophoretic deposition (EPD) techniques to rapidly coat graphene oxide (GO)/molybdenum disulfide (MoS₂) composite on Quartz Crystal Microbalance (QCM) sensors. Various ratios of GO/MoS₂ composites (e.g., GO/MoS₂_1, GO/MoS₂_2, and GO/MoS₂_3), as well as GO and MoS₂ alone were tested to assess their gas sensing capabilities. The GO/MoS₂_2 composite exhibited a 78% increase in sensitivity to ethyl acetate over other coatings. Surface characterization techniques, including FESEM, EDX, XPS, and Raman spectroscopy, were used to confirm the composite’ structure, and the sensing mechanisms involving adsorption and desorption were discussed. These findings highlight the potential of GO/MoS₂ composites for enhancing VOC detection in gas sensing applications.

Graphical Abstract

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

石英晶体微天平电泳沉积氧化石墨烯/二硫化钼复合材料用于乙酸乙酯VOC检测

挥发性有机化合物（VOCs）的存在对空气质量和人类健康构成重大风险。然而，现有的传感技术在有效的传感器制造方面遇到了限制。旋转涂层和滴铸等技术可以快速沉积，但缺乏精确的控制，而逐层组装提供了更好的控制，但很耗时。为了解决这一问题，本研究采用电泳沉积（EPD）技术在石英晶体微平衡（QCM）传感器上快速涂覆氧化石墨烯(GO)/二硫化钼（MoS2）复合材料。测试了不同比例的GO/MoS2复合材料（例如GO/MoS2_1， GO/MoS2_2和GO/MoS2_3）以及GO和MoS2单独测试以评估其气敏能力。与其他涂层相比，氧化石墨烯/二硫化钼复合材料对乙酸乙酯的灵敏度提高了78%。利用FESEM、EDX、XPS和拉曼光谱等表面表征技术对复合材料的结构进行了表征，并对其吸附和脱附的传感机理进行了讨论。这些发现突出了氧化石墨烯/二硫化钼复合材料在气敏应用中增强VOC检测的潜力。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.