Electrochemical non-enzymatic glucose sensor based on hierarchical 3D Co3O4/Ni heterostructure electrode for pushing sensitivity boundary to a new limit

Electrochemical non-enzymatic glucose sensor based on hierarchical 3D Co3O4/Ni heterostructure electrode for pushing sensitivity boundary to a new limit
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基于分层 3D Co3O4/Ni 异质结构电极的电化学非酶葡萄糖传感器将灵敏度边界推向新极限

DOI:
10.1016/j.snb.2018.04.023
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发表时间:
2018-08
期刊:
Sensors and Actuators B: Chemical
影响因子:
--
通讯作者:
Serge Zhuiykov
Serge Zhuiykov
中科院分区:
其他
文献类型:
--
作者:
Hongyan Xu;Chengkai Xia;Siyan Wang;Feng Han;Mohammad Karbalaei Akbari;Zhenyin Hai;Serge Zhuiykov

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采用水热法在多孔镍基底上制备了三维Co 3 O 4/Ni异质结构,并将其用于葡萄糖的电化学非酶检测。利用X射线衍射(XRD)、傅立叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)等技术对所制备的Co 3 O 4/Ni三维异质结构的结构和形貌进行了表征。结果表明,在室温下,可以制备出直径约为100 nm的纯Co 3 O 4簇纳米纤维。50 nm的纳米晶体在三维Ni衬底上逐层生长。它们提供了高的表面积与体积比,导致17,886 m2/g的高比表面积。基于制造的3D Co 3 O 4/Ni异质结构的电化学非酶传感器实现了迄今为止对葡萄糖的最高灵敏度13,855 μA mM−1cm− 2。在抗坏血酸、尿酸、氯化钠、多巴胺、半胱氨酸和d-果糖存在下,该传感器对葡萄糖具有良好的选择性,响应时间小于1 s,检测限低至1 μM(S/N = 3)。
In this study, 3D Co3O4/Ni heterostructures were synthesized on the porous Ni substrate by hydrothermal method for electrochemical non-enzymatic glucose detection. Both structure and morphology of fabricated 3D Co3O4/Ni heterostructures were characterized by X-ray diffraction (XRD), Fourier transformed infrared (FTIR) and scanning electron microscopy (SEM) techniques. The results showed that the pure Co3O4cluster nanofibers with the diameter of ca. 50 nm have grown layer by layer on the 3D Ni substrate. They provided high surface-to-volume ratio resulting in the high specific surface area of 17,886 m2/g. The electrochemical non-enzymatic sensor based on fabricated 3D Co3O4/Ni heterostructures enabled the highest sensitivity of 13,855 μA mM−1cm−2towards glucose reported-to-date. This sensor also exhibited fast response time (less than 1 s), detection limit as low as 1 μM (S/N = 3) and excellent selectivity to glucose at the presence of ascorbic acid, uric acid, sodium chloride, dopamine, cysteine andd-fructose.
自支撑多孔 CoOOH 纳米片阵列作为非酶葡萄糖传感器,具有良好的重现性
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