基于聚乙烯吡咯烷酮-聚吡咯/氧化石墨烯- ito纳米复合材料的先进有毒气体传感器：增强对还原性和氧化性气体的敏感性

IF 3.1 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-06-27 DOI:10.1016/j.cap.2025.06.012

Rand Waleed, Ehssan Al-Bermany

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引用次数: 0

摘要

聚合物纳米复合材料通过其高灵敏度、灵活性和成本效益革新了气体传感技术。研究了导电聚吡咯、氧化石墨烯和氧化铟锡对聚乙烯吡咯烷酮基纳米复合材料电学性能和气体检测性能的影响。傅里叶变换红外光谱证实了组分之间的强键合。x射线衍射证实聚乙烯吡咯烷酮的半结晶行为没有变化。场发射扫描电镜图像显示样品表面粗糙孔隙的均匀样品。辩证常数从154显著提高到300，交流电导率从1.31∗10−11显著提高到4.64∗10−11 S. cm−1。对样品在不同温度下还原氨（NH3）和氧化二氧化氮（NO2）的气敏性进行了测试。在250℃时，NO2的最大灵敏度达到25%，而NH3在150℃时的灵敏度为5.81%。这些结果证实了混合复合材料在制造柔性、高性能的环境和电子气体传感器方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Advanced toxic gas sensors based on polyvinylpyrrolidone-polypyrrole/graphene oxide-ITO nanocomposites: Enhanced sensitivity toward reducing and oxidizing gases

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Advanced toxic gas sensors based on polyvinylpyrrolidone-polypyrrole/graphene oxide-ITO nanocomposites: Enhanced sensitivity toward reducing and oxidizing gases

Polymer nanocomposites are revolutionizing gas sensing technology through high sensitivity, flexibility, and cost-effectiveness. The impact of conductive polypyrrole, graphene oxide, and indium tin oxide on polyvinylpyrrolidone-based nanocomposites for electrical properties and gas detection was investigated. Fourier transform infrared spectroscopy confirmed the strong bonding among components. X-ray diffraction confirmed the semicrystalline behavior of polyvinylpyrrolidone without change. Field emission scanning electron microscopy images exposed homogenous samples with rough porosity of the sample's surface. The dialectical constant notably improved from 154 to 300, and the AC conductivity significantly enhanced from 1.31∗10⁻¹¹ to 4.64∗10⁻¹¹ S. cm⁻¹. The gas sensitivity of reducing ammonia (NH₃) and oxidizing nitrogen dioxide (NO₂) was tested for samples at different temperatures. The maximum sensitivity of NO₂ reached 25 % at 250 °C, while NH₃ recorded a sensitivity of 5.81 % at 150 °C. These results confirm the potential of the hybrid composite materials for fabricating flexible, high-performance gas sensors for environmental and electronic applications.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.