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用于增强电化学传感的电纺纳米纤维的石墨烯包覆

Graphene Wrapping of Electrospun Nanofibers for Enhanced Electrochemical Sensing.

作者信息

Tsiamis Andreas, Diaz Sanchez Francisco, Hartikainen Niklas, Chung Michael, Mitra Srinjoy, Lim Ying Chin, Tan Huey Ling, Radacsi Norbert

机构信息

School of Engineering, Institute for Integrated Micro and Nano Systems, The University of Edinburgh, Scottish Microelectronics Centre, Edinburgh EH9 3FF, U.K.

School of Engineering, Institute for Materials and Processes, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh EH9 3JL, U.K.

出版信息

ACS Omega. 2021 Apr 13;6(16):10568-10577. doi: 10.1021/acsomega.0c05823. eCollection 2021 Apr 27.

DOI:10.1021/acsomega.0c05823
PMID:34056211
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8153741/
Abstract

This paper presents a scalable method of developing ultrasensitive electrochemical biosensors. This is achieved by maximizing sensor conductivity through graphene wrapping of carbonized electrospun nanofibers. The effectiveness of the graphene wrap was determined visually by scanning electron microscopy and chemically by Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray diffraction. The sensing performance of different electrode samples was electrochemically characterized using cyclic voltammetry and electrochemical impedance spectroscopy, with the graphene-wrapped carbonized nanofiber electrode showing significantly improved performance. The graphene-wrapped carbonized nanofibers exhibited a relative conductivity of ∼14 times and an electroactive surface area of ∼2 times greater compared to the bare screen-printed carbon electrode despite experiencing inhibitive effects from the carbon glue used to bind the samples to the electrode. The results indicate potential for a highly conductive, inert sensing platform.

摘要

本文提出了一种可扩展的超灵敏电化学生物传感器开发方法。这是通过对碳化电纺纳米纤维进行石墨烯包覆来最大化传感器电导率实现的。通过扫描电子显微镜直观地确定了石墨烯包覆的有效性，并通过傅里叶变换红外光谱、拉曼光谱和X射线衍射进行了化学测定。使用循环伏安法和电化学阻抗谱对不同电极样品的传感性能进行了电化学表征，结果表明石墨烯包覆的碳化纳米纤维电极性能有显著改善。尽管用于将样品与电极结合的碳胶产生了抑制作用，但与裸丝网印刷碳电极相比，石墨烯包覆的碳化纳米纤维的相对电导率约高14倍，电活性表面积约大2倍。结果表明了构建高导电性、惰性传感平台的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/44d181bdca5a/ao0c05823_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/997b5440e23f/ao0c05823_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/03aa738c1acc/ao0c05823_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/89e7c33694bc/ao0c05823_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/32b98315c66a/ao0c05823_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/15a606a1ddda/ao0c05823_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/c2f159b324d9/ao0c05823_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/4d8ad1a4e271/ao0c05823_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/d3a7d9f0816e/ao0c05823_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/44d181bdca5a/ao0c05823_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/997b5440e23f/ao0c05823_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/03aa738c1acc/ao0c05823_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/89e7c33694bc/ao0c05823_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/32b98315c66a/ao0c05823_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/15a606a1ddda/ao0c05823_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/c2f159b324d9/ao0c05823_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/4d8ad1a4e271/ao0c05823_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/d3a7d9f0816e/ao0c05823_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8aaa/8153741/44d181bdca5a/ao0c05823_0010.jpg

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