Quartz crystal microbalance modified with rhodamine-polyacrylonitrile nanofibers for acetone vapor sensing

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-07-07 DOI:10.1016/j.mseb.2025.118581

Rifat Capan , Inci Capan , Mevlut Bayrakci

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Abstract

Rhodamine based polyacrylonitrile (PAN-RHE) electrospun nanofiber sensor was used to investigate for the vapor sensor application against acetone, ethanol, and benzene vapors at room temperature. Quartz crystal microbalance technique was employed to collect the time-dependent sensor response data which were analyzed for the determination of sensor parameters and for the investigation of the adsorption behavior between nanofiber and vapor molecules. The acetone vapor yielded the highest response with a best response with a sensitivity of 0.0243 Hz/ppm. The limit of detection and limit of quantification for acetone vapor were determined as 135.80 ppm and 411.52 ppm, respectively. Pseudo first-order and Elovich models were chosen to investigate adsorption dynamics. Pseudo first-order adsorption rate and Elovich desorption constant were calculated using time-dependent data. A possible hydrogen binding or dipole–dipole interaction between the vapor molecules and rhodamine and/or nitrile units of the PAN fiber chain was proposed as a sensor interaction mechanism.

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罗丹明-聚丙烯腈纳米纤维改性石英晶体微天平用于丙酮蒸汽传感

采用罗丹明基聚丙烯腈（PAN-RHE）静电纺纳米纤维传感器，研究了常温下丙酮、乙醇和苯蒸汽传感器的应用。利用石英晶体微天平技术采集传感器的时变响应数据，用于传感器参数的确定和纳米纤维与蒸汽分子吸附行为的研究。丙酮蒸汽的响应最高，最佳响应灵敏度为0.0243 Hz/ppm。丙酮蒸气的检出限为135.80 ppm，定量限为411.52 ppm。采用拟一阶模型和Elovich模型研究吸附动力学。利用随时间变化的数据计算拟一级吸附速率和Elovich解吸常数。水蒸气分子与PAN纤维链上的罗丹明和/或腈单元之间可能存在氢结合或偶极-偶极相互作用，这是一种传感器相互作用机制。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.