Synthesis and characterization of Co3O4 ultra-nanosheets and Co3O4 ultra-nanosheet-Ni(OH)2 as non-enzymatic electrochemical sensors for glucose detection.

Synthesis and characterization of Co3O4 ultra-nanosheets and Co3O4 ultra-nanosheet-Ni(OH)2 as non-enzymatic electrochemical sensors for glucose detection.
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DOI：
10.1016/j.msec.2015.10.055
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发表时间：
2016-02
期刊：
Materials science & engineering. C, Materials for biological applications
影响因子：
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通讯作者：
M. Mahmoudian;W. Basirun;P. Woi;M. Sookhakian;R. Yousefi;Hanieh Ghadimi;Y. Alias
M. Mahmoudian;W. Basirun;P. Woi;M. Sookhakian;R. Yousefi;Hanieh Ghadimi;Y. Alias
中科院分区：
其他
文献类型：
--
作者：
M. Mahmoudian;W. Basirun;P. Woi;M. Sookhakian;R. Yousefi;Hanieh Ghadimi;Y. Alias

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本研究采用溶剂热法合成了Co 3 O 4超纳米片（Co 3 O 4UNSs）和Co 3 O 4超纳米片-Ni（OH）2（Co 3 O 4UNS-Ni（OH）2），并将其作为非酶电化学传感器用于葡萄糖检测。X射线衍射和透射电子显微镜结果证实了Co 3 O 4UNS在Ni（OH）2表面的沉积。与Co 3 O 4UNSs相比，Co 3 O 4UNSs-Ni（OH）2/玻碳电极（电流密度：2000 μA·cm− 2）上葡萄糖氧化峰电流的增加提高了葡萄糖检测的灵敏度。这些结果证实了Ni（OH）2/玻碳电极是一种检测葡萄糖的敏感材料，而Co 3 O 4UNSs由于其高的比表面积，可以增加葡萄糖的相互作用和检测。线性段（5-40 μM）的估计检测限（S/N = 3）和定量限（S/N = 10）分别为1.08 μM和3.60 μM。重复性实验证实了Co 3 O 4 UNS-Ni（OH）2用于葡萄糖定量检测的可行性。
The present study examines the synthesis of Co3O4ultra-nanosheets (Co3O4UNSs) and Co3O4ultra-nanosheet-Ni(OH)2(Co3O4UNS-Ni(OH)2) via solvothermal process and their application as non-enzymatic electrochemical sensors for glucose detection. X-ray diffraction and transmission electron microscopy results confirmed the Co3O4UNS deposition on Ni(OH)2surface. The presence of Co3O4UNSs on Ni (OH)2surface improved the sensitivity of glucose detection, from the increase of glucose oxidation peak current at the Co3O4UNS-Ni(OH)2/glassy carbon electrode (current density: 2000 μA·cm− 2), compared to the Co3O4UNSs. These results confirmed that Ni(OH)2on glassy carbon electrode is a sensitive material for glucose detection, moreover the Co3O4UNSs can increase the interaction and detection of glucose due to their high surface area. The estimated limit of detection (S/N = 3) and limit of quantification (S/N = 10) of the linear segment (5–40 μM) are 1.08 μM and 3.60 μM respectively. The reproducibility experiments confirmed the feasibility of Co3O4UNS-Ni(OH)2for the quantitative detection of certain concentration ranges of glucose.