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Development of highly-sensitive hydrazine sensor based on facile CoS2-CNT nanocomposites

机译:基于舒适COS2-CNT纳米复合材料的高敏感肼传感器的开发

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摘要

Cobalt pyrite-decorated carbon nanotube nanocomposites (CoS2-CNT NCs) were prepared by a simple wet-chemistry method in an alkaline medium. The characterization of the resulting CoS2-CNT NCs was performed in detail by field-emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), UV-vis spectroscopy, FT-IR spectroscopy, and X-ray diffraction patterns (XRD). A glassy carbon electrode (GCE) was fabricated from the CoS2-CNT NCs and developed into a chemical sensor for hydrazine (HZ) using a simple and reliable I-V method. The poisonous chemical HZ was selected as the target analyte in a selectivity study, which demonstrated the fast response of the GCE sensor fabricated from CoS2-CNT NCs using the I-V method. It also displayed an excellent sensitivity, a very low detection limit, long-term stability, and reproducibility. In a diagnostic study, a linear calibration plot (r(2) = 0.9992) was obtained for a 0.1 nM to 1.0 mM aqueous solution of HZ, with a sensitivity of 4.430 mu A nM(-1) m(-2) and low detection limit (LOD) of 0.1 nM. The potential of CoS2-CNT NCs in terms of chemical sensing is also discussed in this report. This approach is emerging as an effective technique for developing efficient chemical sensors for the detection of environmental pollutants in a large scale.
机译:钴黄铁矿装饰碳纳米管纳米复合材料(CoS2-CNT NCS)通过在碱性介质中的简单湿化学方法制备。所得CoS2-CNT NC的表征通过场发射扫描电子显微镜(FESEM),能量分散光谱法(EDS),X射线光电子能谱(XPS),UV-vis光谱,FT-IR光谱中详细进行和X射线衍射图(XRD)。玻碳电极(GCE)从CoS2-CNT的NC被制造和使用简单的和可靠的I-V方法发展成肼(HZ)的化学传感器。有毒化学HZ被选定为在选择性研究的目标分析物,这表明使用该I-V方法从CoS2-CNT的NC制造的GCE传感器的响应速度快。它也显示极好的灵敏度,非常低的检测限,长期稳定性,和可重复性。在诊断研究中,线性校准曲线图(R(2)= 0.9992),用于HZ的0.1nM至1.0mM的水溶液获得,具有4.430亩灵敏度甲nM的(-1)米(-2)和低检测限为0.1nM(LOD)。 CoS2-CNT纳米晶的化学传感方面的潜力还在本报告中讨论。这种方法正在成为一种有效的技术开发有效的化学传感器,用于在大规模的检测环境污染物。

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  • 来源
    《RSC Advances》 |2016年第93期|共10页
  • 作者单位

    King Abdulaziz Univ CEAMR POB 80203 Jeddah 21589 Saudi Arabia;

    Shahjalal Univ Sci &

    Technol Sch Phys Sci Dept Chem Sylhet 3100 Bangladesh;

    King Abdulaziz Univ CEAMR POB 80203 Jeddah 21589 Saudi Arabia;

    Shahjalal Univ Sci &

    Technol Sch Phys Sci Dept Chem Sylhet 3100 Bangladesh;

    Shahjalal Univ Sci &

    Technol Sch Phys Sci Dept Chem Sylhet 3100 Bangladesh;

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

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