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首页> 外文期刊>RSC Advances >Pd nanoparticles supported on nitrogen, sulfur-doped three-dimensional hierarchical nanostructures as peroxidase-like catalysts for colorimetric detection of xanthine
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Pd nanoparticles supported on nitrogen, sulfur-doped three-dimensional hierarchical nanostructures as peroxidase-like catalysts for colorimetric detection of xanthine

机译：Pd纳米颗粒在氮气上负载，硫掺杂的三维等级纳米结构作为过氧化物酶样催化剂，用于色度检测黄嘌呤

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摘要

Pd nanoparticles supported on nitrogen, sulfur-doped three-dimensional hierarchical nanostructures (Pd/N-S-CS) were successfully prepared by glycol reduction of Pd on nitrogen, sulfur-doped three-dimensional hierarchical nanostructures (N-S-CS) using humic acid (HA) and thiourea as the precursors. Transmission electron microscopy (TEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and Xray photoelectron spectroscopy (XPS) were employed to confirm the characterization of Pd/N-S-CS. The results showed that the obtained Pd/N-S-CS had interesting three-dimensional hierarchical nanostructures which were composed of nanosheets, and Pd nanoparticles with an average diameter of 6 nm were distributed on the surface of the nanosheets. Furthermore, the Pd/N-S-CS exhibited excellent peroxidase-like activity and it can effectively catalyze the classical peroxidase substrate 3,30,5,50-tetramethylbenzidine (TMB) by H2O2 to produce a color reaction. Based on this finding, a simple, sensitive, and selective colorimetric method for H2O2 and xanthine detection was developed and applied to detect xanthine in urine samples. The detection limit of H2O2 and xanthine were 3.3 x 10(-6) M and 2.9 x 10(-7) M, respectively. This work is expected to provide a novel and efficient method for the detection of xanthine in the human body.
机译：在氮气上通过培养物（硫掺杂的三维等级分子纳米结构（NS-CS）的Pd，通过纯硫掺杂硫掺杂的三维等级纳米结构（Pd / NS-Cs）的Pd纳米颗粒通过腐殖酸（HA ）和硫脲作为前体。使用透射电子显微镜（TEM），X射线衍射（XRD），能量分散X射线光谱（EDX）和X射线光电子谱（XPS）以确认Pd / N-S-Cs的表征。结果表明，所获得的Pd / N-S-CS具有有趣的三维分层纳米结构，其由纳米片组成，并且在纳米晶片表面上分布平均直径为6nm的Pd纳米颗粒。此外，Pd / N-S-Cs表现出优异的过氧化物酶样活性，并且它可以通过H 2 O 2有效地催化经典过氧酶底物3,30,5,50-四甲基苯胺（TMB）以产生颜色反应。基于该发现，开发了一种简单，敏感和选择性的比色法，用于检测尿液样品中的黄嘌呤。 H 2 O 2和黄嘌呤的检出限分别为3.3×10（ - 6）m和2.9×10（-7）m。预计这项工作有助于检测人体黄嘌呤的新颖有效方法。

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  • 来源
    《RSC Advances》 |2015年第41期|共8页
  • 作者

    Shi Weijie; Fan Hai; Ai Shiyun; Zhu Lusheng;

  • 作者单位

    Shandong Agr Univ Coll Chem &

    Mat Sci Tai An 271018 Shandong Peoples R China;

    Shandong Agr Univ Coll Chem &

    Mat Sci Tai An 271018 Shandong Peoples R China;

    Shandong Agr Univ Coll Chem &

    Mat Sci Tai An 271018 Shandong Peoples R China;

    Shandong Agr Univ Coll Resources &

    Environm Tai An 271018 Shandong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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