Preparation of Co3O4 conical nanotube and its application in calcium ion biosensor
Preparation of Co3O4 conical nanotube and its application in calcium ion biosensor
复制标题
Co3O4锥形纳米管的制备及其在钙离子生物传感器中的应用
DOI:
10.1007/s00339-017-1460-x
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发表时间:
2018-01
期刊:
影响因子:
--
通讯作者:
Cunzhi Liu
中科院分区:
文献类型:
--
作者:
Hongwen Yuan;Chi Ma;Junlong Geng;Liqiang Zhang;Hai Cui;Cunzhi Liu
Calcium ion (Ca2+) is an important ion involved in body life activities, and its content detection in biomedical field owns great significance. In this study, we fabricated Co3O4 conical nanotube on F-doped tin oxide (FTO) substrate for detecting Ca2+. Co3O4 is fabricated through a hydrothermal method and demonstrates a regular hexagon structure, with a length of 5–10 μm and wall thickness of 30 nm. The structure and morphology of Co3O4 were characterized by X-ray diffraction (XRD), scanning electron microscope, and transmission electron microscopy, respectively. In addition, then, we used electrochemical technique to characterize the Ca2+ concentration in the simulated body fluid. The detection of Ca2+ is originated from the electrochemical reaction of hydrogen peroxide using Co3O4 as a catalyst, in which Ca2+ plays a significant role for accelerating the decomposition of hydrogen peroxide catalytic performance. By monitoring the electron transfer signals changes during the electrochemical reaction, we can quickly quantify the Ca2+ concentrations.
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