Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules
Facile, and low-cost preparation of three-dimensional graphene nanomesh (3D-GNM) with electrocatalytic sites and its application in electrochemical sensors is still a challenge. Herein, we demonstrate a fast and convenient strategy to prepare free-standing 3D-GNM, which possesses in-plane nanopores,...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522001277 |
| _version_ | 1818759758957510656 |
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| author | Jiawei Gong Hongliang Tang Meifang Wang Xueting Lin Kailong Wang Jiyang Liu |
| author_facet | Jiawei Gong Hongliang Tang Meifang Wang Xueting Lin Kailong Wang Jiyang Liu |
| author_sort | Jiawei Gong |
| collection | DOAJ |
| description | Facile, and low-cost preparation of three-dimensional graphene nanomesh (3D-GNM) with electrocatalytic sites and its application in electrochemical sensors is still a challenge. Herein, we demonstrate a fast and convenient strategy to prepare free-standing 3D-GNM, which possesses in-plane nanopores, artificial function edges and electrocatalytic properties. 3D graphene foam (3D-G) with monolithic and macroporous structure serves as the starting electrode. 3D-GNM is easily prepared by simple electrochemical polarization of 3D-G, including anodic oxidation (anodization, +5 V, in ionic liquid-IL electrolyte) and subsequent cathodic reduction (cathodization, −1 V, in phosphate buffer solution-PBS), which can be completed within 10 min. 3D-GNM exhibits well-separated oxidation peaks towards dopamine (DA), uric acid (UA), and ascorbic acid (AA). Compared with that on 3D-G, the oxidation potentials of DA, UA, and AA on 3D-GNM respectively have cathodic shifts of 180 mV, 130 mV and 290 mV and the current intensities of DA and UA increase by 52 times and 12 times. Selective determination of DA, UA and AA in ternary mixture (limit of detection is 0.26 μM, 6.0 nM and 3.1 μM, respectively) or biological (serum) samples is achieved. |
| first_indexed | 2024-12-18T06:47:49Z |
| format | Article |
| id | doaj.art-e0c592f88b694c36aed84fb7acf87b6a |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-18T06:47:49Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-e0c592f88b694c36aed84fb7acf87b6a2022-12-21T21:17:26ZengElsevierMaterials & Design0264-12752022-03-01215110506Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomoleculesJiawei Gong0Hongliang Tang1Meifang Wang2Xueting Lin3Kailong Wang4Jiyang Liu5Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaAffiliated Fangchenggang Hospital, Guangxi University of Chinese Medicine, Fangchenggang 538001, ChinaDepartment of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, ChinaGuangxi University of Chinese Medicine, Nanning 530200, ChinaThe First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530023, ChinaDepartment of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China; Corresponding author.Facile, and low-cost preparation of three-dimensional graphene nanomesh (3D-GNM) with electrocatalytic sites and its application in electrochemical sensors is still a challenge. Herein, we demonstrate a fast and convenient strategy to prepare free-standing 3D-GNM, which possesses in-plane nanopores, artificial function edges and electrocatalytic properties. 3D graphene foam (3D-G) with monolithic and macroporous structure serves as the starting electrode. 3D-GNM is easily prepared by simple electrochemical polarization of 3D-G, including anodic oxidation (anodization, +5 V, in ionic liquid-IL electrolyte) and subsequent cathodic reduction (cathodization, −1 V, in phosphate buffer solution-PBS), which can be completed within 10 min. 3D-GNM exhibits well-separated oxidation peaks towards dopamine (DA), uric acid (UA), and ascorbic acid (AA). Compared with that on 3D-G, the oxidation potentials of DA, UA, and AA on 3D-GNM respectively have cathodic shifts of 180 mV, 130 mV and 290 mV and the current intensities of DA and UA increase by 52 times and 12 times. Selective determination of DA, UA and AA in ternary mixture (limit of detection is 0.26 μM, 6.0 nM and 3.1 μM, respectively) or biological (serum) samples is achieved.http://www.sciencedirect.com/science/article/pii/S0264127522001277Three-dimensional graphene nanomeshElectrochemical sensorElectrocatalysisActive small moleculesSelective determination |
| spellingShingle | Jiawei Gong Hongliang Tang Meifang Wang Xueting Lin Kailong Wang Jiyang Liu Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules Materials & Design Three-dimensional graphene nanomesh Electrochemical sensor Electrocatalysis Active small molecules Selective determination |
| title | Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules |
| title_full | Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules |
| title_fullStr | Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules |
| title_full_unstemmed | Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules |
| title_short | Novel three-dimensional graphene nanomesh prepared by facile electro-etching for improved electroanalytical performance for small biomolecules |
| title_sort | novel three dimensional graphene nanomesh prepared by facile electro etching for improved electroanalytical performance for small biomolecules |
| topic | Three-dimensional graphene nanomesh Electrochemical sensor Electrocatalysis Active small molecules Selective determination |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522001277 |
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