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首页> 外文期刊>RSC Advances >Synthesis of bifunctional reduced graphene oxide/CuS/Au composite nanosheets for in situ monitoring of a peroxidase-like catalytic reaction by surface-enhanced Raman spectroscopy
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Synthesis of bifunctional reduced graphene oxide/CuS/Au composite nanosheets for in situ monitoring of a peroxidase-like catalytic reaction by surface-enhanced Raman spectroscopy

机译：基于表面增强拉曼光谱法用于原位监测过氧化物酶样催化反应的双官能还原氧化物/ CUS / AU复合纳米片

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摘要

Reduced graphene oxide (rGO)/CuS/Au composite nanosheets were prepared herein via a two-step approach based on a simple hydrothermal reaction combined with an in situ reduction process. The rGO/CuS/Au composite nanosheets exhibited good peroxidase-like catalytic activity toward the oxidation of a peroxidase substrate 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H2O2. The rGO/CuS/Au composite nanosheets were also utilized as a new surface-enhanced Raman scattering (SERS) substrate, enabling monitoring of the peroxidase-like catalytic reaction on their active surface. The oxidized intermediate of TMB formed during the peroxidase-like reaction was captured and clearly identified by SERS spectroscopy, providing an avenue for quantitative in situ monitoring of the oxidation of TMB. This approach could also be used to directly detect H2O2 with a detection limit of about 2.1 mu M.
机译：通过基于简单的水热反应与原位还原过程合并的简单水热反应，通过两步方法制备，将石墨烯氧化物（RGO）/ CU / Au复合纳米片。 RGO / CUS / Au复合纳米烯片在H 2 O 2存在下朝向过氧化物酶底物3,3'，5,5'-四甲基苯胺（TMB）氧化良好的过氧化物酶样催化活性。 RGO / CUS / AU复合纳米片也用作新的表面增强拉曼散射（SERS）底物，从而能够监测其活性表面上的过氧化物酶样催化反应。 在过氧化物酶样反应过程中形成的TMB的氧化中间体被菌光谱捕获并清楚地鉴定，提供了对TMB氧化的定量定量的途径。 这种方法也可用于直接检测H2O2，检测限为约2.1亩。

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  • 来源
    《RSC Advances》 |2016年第59期|共7页
  • 作者

    Song Wei; Nie Guangdi; Ji Wei; Jiang Yanzhou; Lu Xiaofeng; Zhao Bing; Ozaki Yukihiro;

  • 作者单位

    Jilin Univ State Key Lab Supramol Struct &

    Mat Changchun 130012 Peoples R China;

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Peoples R China;

    Kwansei Gakuin Univ Sch Sci &

    Technol 2-1 Gakuen Sanda Hyogo 6601337 Japan;

    Jilin Univ Coll Chem Alan G MacDiarmid Inst Changchun 130012 Peoples R China;

    Kwansei Gakuin Univ Sch Sci &

    Technol 2-1 Gakuen Sanda Hyogo 6601337 Japan;

    Jilin Univ State Key Lab Supramol Struct &

    Mat Changchun 130012 Peoples R China;

    Kwansei Gakuin Univ Sch Sci &

    Technol 2-1 Gakuen Sanda Hyogo 6601337 Japan;

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  • 正文语种 eng
  • 中图分类 化学;
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