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A sensitive cataluminescence-based sensor using a SrCO3/graphene composite for n-propanol

机译：基于敏感的基于催化剂的传感器，用于N-丙醇的SRCO3 /石墨烯复合材料

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摘要

In this paper, we developed a cataluminescence-based sensor using SrCO3/graphene for sensitive and selective detection of n-propanol. The composite was characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, and gas adsorption. The sensor was coupled with a miniature vaporizing device to detect n-propanol in liquid samples. The experimental results revealed that the SrCO3/graphene sensor exhibited a sensitivity for n-propanol 5.8 times higher than that of pure SrCO3, indicating that the sensitivity of the SrCO3/graphene sensor was increased by adding graphene to SrCO3. The linear range of the sensor was 0.2 to 32 mg L-1 (r = 0.9987) with a limit of detection of 0.08 mg L-1. The sensor showed a rapid response of 2 s and a recovery time of 20 s, respectively. The sensor was used to analyze samples spiked with known concentrations of n-propanol. The concentrations of n-propanol in all samples were well quantified with satisfactory recoveries, indicating that the SrCO3/graphene sensor is a promising candidate for fast, sensitive, selective detection of n-propanol. We also discuss the possible mechanism based on the reaction products.
机译：在本文中，我们使用SRCO3 /石墨烯开发了基于催化的传感器，用于敏感和选择性检测N-PROPANOL。复合材料的特征在于X射线衍射，透射电子显微镜，傅里叶变换红外光谱和气体吸附。传感器与微型汽化装置偶联以检测液体样品中的N-丙醇。实验结果表明，SRCO3 /石墨烯传感器的敏感性比纯SRCO3高5.8倍，表明通过将石墨烯加入SRCO3来增加SRCO3 /石墨烯传感器的灵敏度。传感器的线性范围为0.2至32mg L-1（R = 0.9987），检测限为0.08mg L-1。传感器分别显示出2 s的快速响应和20 s的恢复时间。传感器用于分析用已知浓度的正丙醇掺入的样品。所有样品中的N-丙醇的浓度良好地定量了令人满意的回收率，表明SRCO3 /石墨烯传感器是快速，灵敏，选择性检测N-Pharanol的有希望的候选者。我们还基于反应产物讨论了可能的机制。

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  • 来源
    《RSC Advances》 |2015年第71期|共8页
  • 作者

    Zhang Qianchun; Meng Feifei; Zha Lin; Wang Xingyi; Zhang Guoyi;

  • 作者单位

    Xingyi Normal Univ Nationalities Sch Biol &

    Chem Xingyi 562400 Peoples R China;

    Xingyi Normal Univ Nationalities Sch Biol &

    Chem Xingyi 562400 Peoples R China;

    Xingyi Normal Univ Nationalities Sch Biol &

    Chem Xingyi 562400 Peoples R China;

    Xingyi Normal Univ Nationalities Sch Biol &

    Chem Xingyi 562400 Peoples R China;

    Xingyi Normal Univ Nationalities Sch Biol &

    Chem Xingyi 562400 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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