https://scholars.lib.ntu.edu.tw/handle/123456789/573727
標題: | Edge-rich interconnected graphene mesh electrode with high electrochemical reactivity applicable for glucose detection | 作者: | Tran V.V., Nguyen D.D., Hofmann M., Hsieh Y.-P., Kan H.-C., Hsu C.-C. Mario Hofmann |
公開日期: | 2021 | 卷: | 11 | 期: | 2 | 起(迄)頁: | 1-14 | 來源出版物: | Nanomaterials | 摘要: | The development of graphene structures with controlled edges is greatly desired for understanding heterogeneous electrochemical (EC) transfer and boosting EC applications of graphene-based electrodes. We herein report a facile, scalable, and robust method to produce graphene mesh (GM) electrodes with tailorable edge lengths. Specifically, the GMs were fabricated at 850 °C under a vacuum level of 0.6 Pa using catalytic nickel templates obtained based on a crack lithography. As the edge lengths of the GM electrodes increased from 5.48 to 24.04 m, their electron transfer rates linearly increased from 0.08 to 0.16 cm?s?1, which are considerably greater than that (0.056 ± 0.007 cm?s?1 ) of basal graphene structures (defined as zero edge length electrodes). To illustrate the EC sensing potentiality of the GM, a high-sensitivity glucose detection was conducted on the graphene/Ni hybrid mesh with the longest edge length. At a detection potential of 0.6 V, the edge-rich graphene/Ni hybrid mesh sensor exhibited a wide linear response range from 10.0 μM to 2.5 mM with a limit of detection of 1.8 μM and a high sensitivity of 1118.9 μA?mM?1?cm?2. Our findings suggest that edge-rich GMs can be valuable platforms in various graphene applications such as graphene-based EC sensors with controlled and improved performance. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101168325&doi=10.3390%2fnano11020511&partnerID=40&md5=bbae4a73ad4295a6518bceca548f651c https://scholars.lib.ntu.edu.tw/handle/123456789/573727 |
ISSN: | 20794991 | DOI: | 10.3390/nano11020511 |
顯示於: | 物理學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。