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首页> 外文期刊>RSC Advances >Cuprous oxide microspheres on graphene nanosheets: an enhanced material for non-enzymatic electrochemical detection of H2O2 and glucose
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Cuprous oxide microspheres on graphene nanosheets: an enhanced material for non-enzymatic electrochemical detection of H2O2 and glucose

机译：石墨烯纳米片上的氧化亚铜微球：H 2 O 2和葡萄糖的非酶促电化学检测的增强材料

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摘要

We report here a facile one-step green synthesis of cuprous oxide microspheres (Cu2OMS) on reduced graphene oxide (RGO) by reducing Cu2+ ions and GO with sodium ascorbate synchronously in the presence of sodium hydroxide. Cu2OMS with different sizes on the surface of RGO were successfully synthesized by adjusting the mass ratio of GO to CuSO4 center dot 5H(2)O in this reaction system. It was found that uniform Cu2OMS were formed on RGO by increasing the mass ratio from 1 : 20 to 1 : 80. The synthesized Cu2OMS-RGO composites with different structures were immobilized onto glassy carbon electrodes and applied to construct electrochemical hydrogen peroxide (H2O2) and glucose sensors. The results indicate that the Cu2OMS-RGO composite created with the mass ratio of 1 : 80 presents the best sensor performances. The fabricated H2O2 sensor exhibits a fast amperometric response to H2O2 with a linear detection range from 0.005 to 2.775 mM and a detection limit of 0.0108 mM, and the glucose sensor has a linear detection range from 0.001 to 0.419 mM and a detection limit of 7.288 x 10(-4) mM. The superior performance is ascribed to the unique structure of the synthesized Cu2OMS and the excellent conductivity of the RGO content. In addition, the synthesized Cu2OMS-RGO composites exhibited improved electrochemical stability. Such novel Cu2OMS-RGO hybrid materials represent promising non-enzymatic electrochemical glucose and H2O2 sensors with high sensitivity and selectivity, improved stability, and fast amperometric response.
机译：我们通过减少Cu 2 +离子并在氢氧化钠存在下同步地与抗坏血酸钠同步地进行氧化亚铜微球（Cu2OMS）的氧化亚铜微球（Cu2Oms）的容易一步绿色合成。通过在该反应系统中调节转到Cuso4中心点5h（2）O的质量比，成功地合成了Rgo表面上具有不同尺寸的Cu2。发现通过将具有不同结构的质量比增加，将具有不同结构的合成的Cu2Oms-Rgo复合材料固定在玻璃状碳电极上并施加以构建电化学氢过氧化氢（H2O2）和葡萄糖传感器。结果表明，以质量比为1：80产生的Cu2Oms-Rgo复合材料显示了最佳的传感器性能。制造的H 2 O 2传感器对H 2 O 2的快速慢性响应，线性检测范围为0.005至2.775mm，检测限为0.0108 mm，葡萄糖传感器的线性检测范围为0.001至0.419 mm，检测限为7.288 x 10（-4）mm。优异的性能归因于合成的Cu2OM的独特结构和RGO含量的优异导电性。此外，合成的Cu2Oms-Rgo复合材料表现出改善的电化学稳定性。这种新型Cu2OMS-RGO混合材料代表了有前途的非酶促电化学葡萄糖和H2O2传感器，具有高灵敏度和选择性，改善稳定性和快速排平响应。

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  • 来源
    《RSC Advances》 |2015年第44期|共8页
  • 作者

    Ding Junwei; Sun Wei; Wei Gang; Su Zhiqiang;

  • 作者单位

    Beijing Univ Chem Technol State Key Lab Chem Resource Engn Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Chem Resource Engn Beijing 100029 Peoples R China;

    Univ Bremen Fac Prod Engn Hybrid Mat Interface Grp D-28359 Bremen Germany;

    Beijing Univ Chem Technol State Key Lab Chem Resource Engn Beijing 100029 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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