Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers
In this work, we report on a rapid, efficient electrochemical iodine sensor based on mechanically treated carbon nanofiber (MCNF) electrodes. The electrode’s highly graphitic content, unique microstructure, and the presence of nitrogen heteroatoms in its atomic lattice contribute to increa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-05-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/18/5/1486 |
| _version_ | 1811306651337097216 |
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| author | Eunbyul Cho Alexandra Perebikovsky Olivia Benice Sunshine Holmberg Marc Madou Maziar Ghazinejad |
| author_facet | Eunbyul Cho Alexandra Perebikovsky Olivia Benice Sunshine Holmberg Marc Madou Maziar Ghazinejad |
| author_sort | Eunbyul Cho |
| collection | DOAJ |
| description | In this work, we report on a rapid, efficient electrochemical iodine sensor based on mechanically treated carbon nanofiber (MCNF) electrodes. The electrode’s highly graphitic content, unique microstructure, and the presence of nitrogen heteroatoms in its atomic lattice contribute to increased heterogeneous electron transfer and improved kinetics compared to conventional pyrolytic carbons. The electrode demonstrates selectivity for iodide ions in the presence of both interfering agents and high salt concentrations. The sensor exhibits clinically relevant limits of detection of 0.59 µM and 1.41 µM, in 1X PBS and synthetic urine, respectively, and a wide dynamic range between 5 µM and 700 µM. These results illustrate the advantages of the material’s unique electrochemical properties for iodide sensing, in addition to its simple, inexpensive fabrication. The reported iodine sensor eliminates the need for specimen processing, revealing its aptitude for applications in point-of-care diagnostics. |
| first_indexed | 2024-04-13T08:49:18Z |
| format | Article |
| id | doaj.art-dd1b1b94f76142d89cf4ecf33cd10201 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:49:18Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-dd1b1b94f76142d89cf4ecf33cd102012022-12-22T02:53:33ZengMDPI AGSensors1424-82202018-05-01185148610.3390/s18051486s18051486Rapid Iodine Sensing on Mechanically Treated Carbon NanofibersEunbyul Cho0Alexandra Perebikovsky1Olivia Benice2Sunshine Holmberg3Marc Madou4Maziar Ghazinejad5Department of Biomedical Engineering, University of California, Irvine, CA 92697, USADepartment of Physics and Astronomy, University of California, Irvine, CA 92697, USADepartment of Chemistry, University of California, Irvine, CA 92697, USADepartment of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USADepartment of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USADepartment of Mechanical and Aerospace Engineering, University of California, Irvine, CA 92697, USAIn this work, we report on a rapid, efficient electrochemical iodine sensor based on mechanically treated carbon nanofiber (MCNF) electrodes. The electrode’s highly graphitic content, unique microstructure, and the presence of nitrogen heteroatoms in its atomic lattice contribute to increased heterogeneous electron transfer and improved kinetics compared to conventional pyrolytic carbons. The electrode demonstrates selectivity for iodide ions in the presence of both interfering agents and high salt concentrations. The sensor exhibits clinically relevant limits of detection of 0.59 µM and 1.41 µM, in 1X PBS and synthetic urine, respectively, and a wide dynamic range between 5 µM and 700 µM. These results illustrate the advantages of the material’s unique electrochemical properties for iodide sensing, in addition to its simple, inexpensive fabrication. The reported iodine sensor eliminates the need for specimen processing, revealing its aptitude for applications in point-of-care diagnostics.http://www.mdpi.com/1424-8220/18/5/1486carbon nanofiberelectrochemical sensoriodine deficiencycarbon microstructurepoint-of-careelectrochemical sensor |
| spellingShingle | Eunbyul Cho Alexandra Perebikovsky Olivia Benice Sunshine Holmberg Marc Madou Maziar Ghazinejad Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers Sensors carbon nanofiber electrochemical sensor iodine deficiency carbon microstructure point-of-care electrochemical sensor |
| title | Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers |
| title_full | Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers |
| title_fullStr | Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers |
| title_full_unstemmed | Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers |
| title_short | Rapid Iodine Sensing on Mechanically Treated Carbon Nanofibers |
| title_sort | rapid iodine sensing on mechanically treated carbon nanofibers |
| topic | carbon nanofiber electrochemical sensor iodine deficiency carbon microstructure point-of-care electrochemical sensor |
| url | http://www.mdpi.com/1424-8220/18/5/1486 |
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