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石墨鳞片和多层石墨烯糊电极的比较电化学研究。

Comparative Electroanalytical Studies of Graphite Flake and Multilayer Graphene Paste Electrodes.

机构信息

Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, University of Lodz, 91-403 Lodz, Poland.

Institute of Chemistry, Faculty of Natural Sciences and Mathematics, University of Ss. Cyril and Methodius in Skopje, 1000 Skopje, Macedonia.

出版信息

Sensors (Basel). 2020 Mar 18;20(6):1684. doi: 10.3390/s20061684.

DOI:10.3390/s20061684
PMID:32197336
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7146468/
Abstract

In this paper, the fabrication, surface characterisation and electrochemical properties of graphite flake (GFPE) and multilayer graphene (MLGPE) paste electrodes are described. The Raman investigations and scanning electron microscopy were used to analyze and compare structure of both carbon materials. The electroanalytical performance of both electrodes was examined and compared on the basis of the square-wave and cyclic voltammetric behavior of acetaminophen and model redox systems. Results of those studies revealed that GFPE has a larger electroactive surface area and better conductive properties, whilst MLGPE demonstrate better analytical characteristic in case of acetaminophen (AC) determination. AC determination was developed using square wave voltammetry (SWV) and square wave stripping voltammetry (SWSV). For both working electrodes, the process of accumulation enabled us to obtain an extended linear range and to lower the detection limit. In pharmaceutical formulations, AC was determined with good recovery.

摘要

本文描述了石墨鳞片 (GFPE) 和多层石墨烯 (MLGPE) 糊电极的制备、表面特性和电化学性能。拉曼研究和扫描电子显微镜用于分析和比较两种碳材料的结构。基于对氨基酚和模型氧化还原体系的方波和循环伏安行为，对两种电极的电分析性能进行了检查和比较。这些研究的结果表明，GFPE 具有更大的活性表面积和更好的导电性能，而 MLGPE 在测定对氨基酚 (AC) 时表现出更好的分析特性。AC 的测定采用方波伏安法 (SWV) 和方波溶出伏安法 (SWSV)。对于两种工作电极，通过积累过程，我们能够获得扩展的线性范围并降低检测限。在药物制剂中，AC 的测定具有良好的回收率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/a554fb96ecbc/sensors-20-01684-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/11bae9c16024/sensors-20-01684-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/6d611c9169a2/sensors-20-01684-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/4c8806b35a2f/sensors-20-01684-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/a554fb96ecbc/sensors-20-01684-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/11bae9c16024/sensors-20-01684-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/fc11c9df361e/sensors-20-01684-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/6d611c9169a2/sensors-20-01684-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/dba17350c3f8/sensors-20-01684-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/4c8806b35a2f/sensors-20-01684-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f0bf/7146468/a554fb96ecbc/sensors-20-01684-g006.jpg

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