| 韩枫,夏承锴,王斯琰,李冰,何蛟,徐宏妍.化学通报,2018,81(9):834-839. |
| 高性能多级花状Co3O4基无酶葡萄糖电化学传感器 |
| High performance non-enzymatic glucose eletrochemcial sensor basedon multistage flower-like Co3O4 |
| 投稿时间：2018-03-06 修订日期：2018-04-04 |
| DOI： |
| 中文关键词: 电化学传感器 Co3O4 葡萄糖 水热反应 纳米材料 |
| 英文关键词:electrochemical sensors Co3O4 glucose hydrothermal reaction nanomaterials |
| 基金项目:山西省重点研发计划(指南)项目(201703D421008)、山西省回国留学人员科研资助项目(2017-094)和国家青年科学资助(61501408) |
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| 中文摘要: |
| 以硝酸钴、碳酸钠、尿素为原料，泡沫镍为基体，采用水热和煅烧相结合的二步法制备了一种多级花状Co3O4/Ni异质结构的无酶葡萄糖传感器。通过X射线衍射（XRD）与扫描电子显微镜（SEM）对Co3O4/Ni电极的成分及形貌进行了表征，并采用循环伏安法（CV）在1M KOH溶液中测试了Co3O4/Ni异质结构葡萄糖传感器电极的电化学性能。测试结果表明，通过二步法在泡沫镍表面制备的Co3O4呈现多级花状纳米纤维结构。将制备的Co3O4/Ni异质结构作为电极构建的无酶葡萄糖传感器表现出响应时间快（低于5s），检测灵敏度高(7 .4mA?mM-1?cm-2)，检出限低(1.17μM，S/N=3）和线性检测范围宽（0-5mM）的特点。进一步的抗干扰性检测表明所制备的传感器在+0.44V vs.SCE对葡萄糖表现出良好的选择性。所有结果表明所制备的多级花状Co3O4基电极在无酶葡萄糖传感器的发展中有着很大的应用潜力。 |
| 英文摘要: |
| With cobalt nitrate, Sodium carbonate and urea as raw materials and nickel foam as matrix, a multilevel hierarchical flower-like Co3O4/Ni heterostructure-based non-enzymatic glucose sensor was fabricated by two-step procedure consisting of hydrothermal method and subsequent calcination. The composition and morphology of the Co3O4/Ni electrode was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), and the electrochemical properties of the fabricated Co3O4/Ni heterostructure-based glucose sensor were detected in 1M KOH solution by the cyclic voltammetry (CV) and chronoamperometry methods. The results showed that the two-step prepared Co3O4, grown on nickel foammatrix, exhibited a multilevel hierarchical flower-like nanofiber structure. The non-enzymatic glucose sensor, with the prepared Co3O4/Ni heterostructure as electrode, showed a fast response time, a high sensitivity of 7.4mA?mM-1?cm-2, a low detection limit of 1.17μM (S/N=3）and a wide linear detection range of 0~5mM. Further anti-interference detection showed that the prepared sensor had a good selectivity for glucose at an applied potential of +0.44V vs.SCE. All the results indicated the multilevel hierarchical flower-like Co3O4-based electrode has great potential in the development of non-enzyme glucose sensor. |
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