Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine
Recently, nitrogen-doped graphene quantum dots (NGQDs), as a new type of quantum semiconductor and photoelectrochemical material, are promising candidates in photoelectric sensing, water splitting, and biological imaging and have various potential application prospects. In this work, NGQDs were prep...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2019-11-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2019-0418 |
| _version_ | 1818363103933366272 |
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| author | Wang Jin Lu Cheng Chen Tingting Hu Lanping Du Yukou Yao Yong Goh M. Cynthia |
| author_facet | Wang Jin Lu Cheng Chen Tingting Hu Lanping Du Yukou Yao Yong Goh M. Cynthia |
| author_sort | Wang Jin |
| collection | DOAJ |
| description | Recently, nitrogen-doped graphene quantum dots (NGQDs), as a new type of quantum semiconductor and photoelectrochemical material, are promising candidates in photoelectric sensing, water splitting, and biological imaging and have various potential application prospects. In this work, NGQDs were prepared by a simple calcination method, and then a photoelectrochemical sensing platform based on the NGQDs electrode with superior photoelectrochemical activity was designed and fabricated for the detection of dopamine (DA). Benefitting from the quantum effect and size effect, NGQDs displayed an enhanced photocurrent effective within ultra-low detection limit (0.03 μm), wide detection range (0.03–450 and 450–9680 μm), and high sensitivity in detecting DA with the assistance of ultraviolet light irradiation. The NGQDs electrode also showed continuous and stable photocurrent densities after long-term experiment, indicating the excellent durability of NGQDs for DA detection. |
| first_indexed | 2024-12-13T21:43:10Z |
| format | Article |
| id | doaj.art-6ad153cbb3554f6bb41e00728268dd4f |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-13T21:43:10Z |
| publishDate | 2019-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-6ad153cbb3554f6bb41e00728268dd4f2022-12-21T23:30:30ZengDe GruyterNanophotonics2192-86062192-86142019-11-019123831383910.1515/nanoph-2019-0418nanoph-2019-0418Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamineWang Jin0Lu Cheng1Chen Tingting2Hu Lanping3Du Yukou4Yao Yong5Goh M. Cynthia6School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaDepartment of Chemistry, Materials Science and Engineering, Institute of Medical Science, University of Toronto, Toronto, Ontario M5S 3H6, CanadaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaCollege of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaDepartment of Chemistry, Materials Science and Engineering, Institute of Medical Science, University of Toronto, Toronto, Ontario M5S 3H6, CanadaRecently, nitrogen-doped graphene quantum dots (NGQDs), as a new type of quantum semiconductor and photoelectrochemical material, are promising candidates in photoelectric sensing, water splitting, and biological imaging and have various potential application prospects. In this work, NGQDs were prepared by a simple calcination method, and then a photoelectrochemical sensing platform based on the NGQDs electrode with superior photoelectrochemical activity was designed and fabricated for the detection of dopamine (DA). Benefitting from the quantum effect and size effect, NGQDs displayed an enhanced photocurrent effective within ultra-low detection limit (0.03 μm), wide detection range (0.03–450 and 450–9680 μm), and high sensitivity in detecting DA with the assistance of ultraviolet light irradiation. The NGQDs electrode also showed continuous and stable photocurrent densities after long-term experiment, indicating the excellent durability of NGQDs for DA detection.https://doi.org/10.1515/nanoph-2019-0418ngqdsphotoelectrochemistrydopamineultrasensitive detection |
| spellingShingle | Wang Jin Lu Cheng Chen Tingting Hu Lanping Du Yukou Yao Yong Goh M. Cynthia Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine Nanophotonics ngqds photoelectrochemistry dopamine ultrasensitive detection |
| title | Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| title_full | Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| title_fullStr | Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| title_full_unstemmed | Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| title_short | Simply synthesized nitrogen-doped graphene quantum dot (NGQD)-modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| title_sort | simply synthesized nitrogen doped graphene quantum dot ngqd modified electrode for the ultrasensitive photoelectrochemical detection of dopamine |
| topic | ngqds photoelectrochemistry dopamine ultrasensitive detection |
| url | https://doi.org/10.1515/nanoph-2019-0418 |
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