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首页> 外文期刊>International journal of environmental analytical chemistry >FDU-15-Pt composites with different Pt loading and their electrocatalytic reduction to ultratrace nitroaromatic compounds
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FDU-15-Pt composites with different Pt loading and their electrocatalytic reduction to ultratrace nitroaromatic compounds

机译：不同Pt负载量的FDU-15-Pt复合材料及其电催化还原为超痕量硝基芳族化合物

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摘要

FDU-15 is a hexagonal mesoporous material with nanometer-sized, highly ordered arrays and large special surface area. In this work, FDU-15-Pt with 2.0%, 5.0% and 8.0% Pt loading were synthesised and used for electrochemical detection of trace nitroaromatic compounds (NACs). The FDU-15-Pt samples were characterised by CO Chemisorption, transmission electron microscopy (TEM) and X-ray diffraction (XRD). It has been demonstrated that FDU-15-Pt with 2.0% Pt loading has the smallest Pt particle size of 2.9 nm, highest Pt metal dispersion of 37.7% and largest Pt metal surface area of 21.36 m~2g~(-1). The FDU-15-Pt/PDDA modified electrode were assembled by electrostatic adsorption of Poly (diallyldi-methylammonium chloride) (PDDA) and FDU-15-Pt. The 2.0% FDU-15-Pt modified sensor showed higher selectivity for NACs than those of 5.0% and 8.0% FDU-15-Pt, which were verified by electrochemical experiments. A linear response over TNT concentration ranging from 8.8 × 10~(-9) M to 1.2 × 10~(-5) M was exhibited with a low detection limit of 2.9 ×10~(-9) M (S/N = 3). Moreover, the proposed 2.0% FDU-15-Pt/PDDA modified sensor has been applied to the detection of NACs in spiked environmental water samples and shows promise for fast and accurate determination of trace NACs in real samples.
机译：FDU-15是一种六角形介孔材料，具有纳米级，高度有序的阵列和较大的比表面积。在这项工作中，合成了Pt含量为2.0％，5.0％和8.0％的FDU-15-Pt，并用于电化学检测痕量硝基芳族化合物（NAC）。 FDU-15-Pt样品通过CO化学吸附，透射电子显微镜（TEM）和X射线衍射（XRD）进行表征。研究表明，负载量为2.0％的FDU-15-Pt的最小Pt粒径为2.9 nm，最大Pt金属分散度为37.7％，最大Pt金属表面积为21.36 m〜2g〜（-1）。 FDU-15-Pt / PDDA修饰电极通过聚二烯丙基二甲基氯化铵（PDDA）和FDU-15-Pt的静电吸附组装而成。经电化学实验证明，2.0％FDU-15-Pt修饰的传感器对NAC的选择性高于5.0％和8.0％FDU-15-Pt。在TNT浓度从8.8×10〜（-9）M到1.2×10〜（-5）M范围内表现出线性响应，检出限低至2.9×10〜（-9）M（S / N = 3 ）。此外，提出的2.0％FDU-15-Pt / PDDA改进型传感器已用于检测加标环境水样品中的NAC，并显示出快速，准确测定实际样品中NAC的希望。

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  • 作者

    Dongxia Nie; Ying Liang; Tianshu Zhou; Qian Sun; Guoyue Shi; Litong Jin;

  • 作者单位

    Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process;

    Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process;

    Department of Environmental Science, East China Normal University, 3663 Zhongshan Road(N), Shanghai, 200062, P.R. China;

    Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process;

    Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process;

    Department of Chemistry and Shanghai Key Laboratory of Green Chemistry and Chemical Process;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    FDU-15-Pt; nitroaromatic compounds; electrocatalytic reduction; detection;

    机译：FDU-15-Pt;硝基芳族化合物电催化还原检测;

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