Preparation of co-Co3 O4 /carbon nanotube/carbon foam for glucose sensor.,Journal of Molecular Recognition

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Preparation of co-Co3 O4 /carbon nanotube/carbon foam for glucose sensor.
Journal of Molecular Recognition ( IF 2.3 ) Pub Date : 2019-12-13 , DOI: 10.1002/jmr.2820
Jiajia Han ₁ , Longfei Miao ₁ , Yonghai Song ₁

Affiliation

Co-Co3 O4 /carbon nanotube/carbon foam (Co-Co3 O4 /CNT/CF) nanocomposites were prepared by soaking melamine foam into a solution of Co(NO3 )2 ·6H2 O, followed by calcination in N2 and air in sequence. The obtained Co-Co3 O4 /CNT/CF nanocomposites were characterized with scanning electron microscopy and cyclic voltammetry. It was found that Co3 O4 nanoparticles were grown on the external of CF successfully, while CNTs were grown on the surfaces of CF in a large amount, which further improved the electrical conductivity of the. The prepared Co-Co3 O4 /CNT/CF nanocomposites were then used to construct nonenzymatic sensor to detect glucose in alkaline solution. The sensor showed detection range from 1.2 μM to 2.29 mM with a detection limit of 0.4 μM (S/N =3) and a high sensitivity of 637.5 μA-1 cm-2 . The developed sensor also showed an instant response, favorable reproducibility, and high selectivity. The results attest that Co-Co3 O4 /CNT/CF composites have great potential in the development of nonenzymatic sensors for glucose.

中文翻译：

用于葡萄糖传感器的co-Co3 O4 /碳纳米管/碳泡沫的制备。

通过将三聚氰胺泡沫浸泡在Co（NO3）2·6H2 O的溶液中，然后依次在N2和空气中煅烧来制备Co-Co3 O4 /碳纳米管/碳泡沫（Co-Co3 O4 / CNT / CF）纳米复合材料。用扫描电子显微镜和循环伏安法对所得的Co-Co3 O4 / CNT / CF纳米复合材料进行表征。结果发现，Co3O4纳米粒子成功地生长在CF的外部，而CNTs大量地生长在CF的表面，这进一步提高了碳纳米管的电导率。然后将制备的Co-Co3O4 / CNT / CF纳米复合材料用于构建非酶传感器，以检测碱性溶液中的葡萄糖。该传感器的检测范围为1.2μM至2.29 mM，检测限为0.4μM（S / N = 3），高灵敏度为637.5μA-1cm-2。开发的传感器还显示出即时响应，良好的重现性和高选择性。结果证明，Co-Co3 O4 / CNT / CF复合材料在开发非酶葡萄糖传感器方面具有巨大潜力。

更新日期：2020-02-04

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