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首页> 外文期刊>Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry >A novel nanohybrid of cobalt oxide-sulfide nanosheets deposited three-dimensional foam as efficient sensor for hydrogen peroxide detection
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A novel nanohybrid of cobalt oxide-sulfide nanosheets deposited three-dimensional foam as efficient sensor for hydrogen peroxide detection

机译：一种新型氧化钴硫化物 - 硫化物纳米液的纳米混合物作为有效传感器沉积三维泡沫，用于过氧化氢检测

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摘要

In this study, we successfully prepared a highly sensitive hydrogen peroxide sensor by directly growing heterostructure of cobalt oxide-sulfide nanosheets on three-dimensional foam. As a self-supporting sensor, it exhibited good activity and excellent stability for hydrogen peroxide detection with a sensitivity of 0.059 mA mu M(-1)cm(-2), wide detection range of 2 to 954 mu M, and low detection limit of 0.890 mu M. In addition, such sensor also displayed outstanding selectivity and good current response retention of around 87.1% after long-term operation of 1500 s. The achieved results may be due to the synergistic effects generated by the formation of metallic oxide-sulfide heterostructure and unique hierarchical 3D structure, which improved electroactive surface area, electron transfer, and electrolyte/ion diffusion, thereby resulting in the enhancement of catalytic performance. Our research may introduce a promising option for fabricating highly catalytic electrocatalyst towards hydrogen peroxide detection in analytical applications. (C) 2019 Elsevier B.V. All rights reserved.
机译：在这项研究中，我们成功地制备由钴氧化物 - 硫化物纳米片的直接生长异质结构的高灵敏度的过氧化氢传感器上三维泡沫。作为自支撑传感器，它表现出对过氧化氢的检测良好活性和优异的稳定性的0.059毫安微米灵敏度（-1）厘米（-2）为2〜954微米，宽检测范围和低检测限0.890亩M.此外，例如传感器还1500周的长期操作之后显示优秀的选择性和大约87.1％的良好的电流响应的保留。所获得的结果可能是由于通过形成金属氧化物 - 硫化物异质结构和独特的分层3D结构，提高了电活性表面区域，电子转移，和电解质/离子的扩散，从而导致催化剂性能的提高所产生的协同效应。我们的研究可能会引入一个有前途的选择用于向在分析应用过氧化氢检测制造高度催化电催化剂。 （c）2019 Elsevier B.v.保留所有权利。

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