Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub>
The development of efficient H<sub>2</sub>O<sub>2</sub> sensors is crucial because of their multiple functions inside and outside the biological system and the adverse effects that a higher concentration can cause. This work reports a highly sensitive and selective non-enzyma...
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| التنسيق: | مقال |
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MDPI AG
2023-01-01
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| سلاسل: | Biosensors |
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| الوصول للمادة أونلاين: | https://www.mdpi.com/2079-6374/13/1/108 |
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| author | Asha Ramesh Ajay Ajith Neeraja Sinha Gudipati Siva Rama Krishna Vanjari S. Abraham John Vasudevanpillai Biju Ch Subrahmanyam |
| author_facet | Asha Ramesh Ajay Ajith Neeraja Sinha Gudipati Siva Rama Krishna Vanjari S. Abraham John Vasudevanpillai Biju Ch Subrahmanyam |
| author_sort | Asha Ramesh |
| collection | DOAJ |
| description | The development of efficient H<sub>2</sub>O<sub>2</sub> sensors is crucial because of their multiple functions inside and outside the biological system and the adverse effects that a higher concentration can cause. This work reports a highly sensitive and selective non-enzymatic electrochemical H<sub>2</sub>O<sub>2</sub> sensor achieved through the hybridization of Co<sub>3</sub>S<sub>4</sub> and graphitic carbon nitride nanosheets (GCNNS). The Co<sub>3</sub>S<sub>4</sub> is synthesized via a hydrothermal method, and the bulk g-C<sub>3</sub>N<sub>4</sub> (b-GCN) is prepared by the thermal polycondensation of melamine. The as-prepared b-GCN is exfoliated into nanosheets using solvent exfoliation, and the composite with Co<sub>3</sub>S<sub>4</sub> is formed during nanosheet formation. Compared to the performances of pure components, the hybrid structure demonstrates excellent electroreduction towards H<sub>2</sub>O<sub>2</sub>. We investigate the H<sub>2</sub>O<sub>2</sub>-sensing performance of the composite by cyclic voltammetry, differential pulse voltammetry, and amperometry. As an amperometric sensor, the Co<sub>3</sub>S<sub>4</sub>/GCNNS exhibits high sensitivity over a broad linear range from 10 nM to 1.5 mM H<sub>2</sub>O<sub>2</sub> with a high detection limit of 70 nM and fast response of 3 s. The excellent electrocatalytic properties of the composite strengthen its potential application as a sensor to monitor H<sub>2</sub>O<sub>2</sub> in real samples. The remarkable enhancement of the electrocatalytic activity of the composite for H<sub>2</sub>O<sub>2</sub> reduction is attributed to the synergistic effect between Co<sub>3</sub>S<sub>4</sub> and GCNNS. |
| first_indexed | 2024-03-09T13:24:46Z |
| format | Article |
| id | doaj.art-df5fbb6598a54ebe9b3d69b9a01fec2c |
| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-03-09T13:24:46Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-df5fbb6598a54ebe9b3d69b9a01fec2c2023-11-30T21:25:37ZengMDPI AGBiosensors2079-63742023-01-0113110810.3390/bios13010108Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub>Asha Ramesh0Ajay Ajith1Neeraja Sinha Gudipati2Siva Rama Krishna Vanjari3S. Abraham John4Vasudevanpillai Biju5Ch Subrahmanyam6Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, IndiaCentre for Nanoscience and Nanotechnology, Department of Chemistry, The Gandhigram Rural Institute, Gandhigram, Dindigul 624302, Tamilnadu, IndiaDepartment of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, IndiaDepartment of Electrical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, IndiaCentre for Nanoscience and Nanotechnology, Department of Chemistry, The Gandhigram Rural Institute, Gandhigram, Dindigul 624302, Tamilnadu, IndiaResearch Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 001-0020, JapanDepartment of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502285, Telangana, IndiaThe development of efficient H<sub>2</sub>O<sub>2</sub> sensors is crucial because of their multiple functions inside and outside the biological system and the adverse effects that a higher concentration can cause. This work reports a highly sensitive and selective non-enzymatic electrochemical H<sub>2</sub>O<sub>2</sub> sensor achieved through the hybridization of Co<sub>3</sub>S<sub>4</sub> and graphitic carbon nitride nanosheets (GCNNS). The Co<sub>3</sub>S<sub>4</sub> is synthesized via a hydrothermal method, and the bulk g-C<sub>3</sub>N<sub>4</sub> (b-GCN) is prepared by the thermal polycondensation of melamine. The as-prepared b-GCN is exfoliated into nanosheets using solvent exfoliation, and the composite with Co<sub>3</sub>S<sub>4</sub> is formed during nanosheet formation. Compared to the performances of pure components, the hybrid structure demonstrates excellent electroreduction towards H<sub>2</sub>O<sub>2</sub>. We investigate the H<sub>2</sub>O<sub>2</sub>-sensing performance of the composite by cyclic voltammetry, differential pulse voltammetry, and amperometry. As an amperometric sensor, the Co<sub>3</sub>S<sub>4</sub>/GCNNS exhibits high sensitivity over a broad linear range from 10 nM to 1.5 mM H<sub>2</sub>O<sub>2</sub> with a high detection limit of 70 nM and fast response of 3 s. The excellent electrocatalytic properties of the composite strengthen its potential application as a sensor to monitor H<sub>2</sub>O<sub>2</sub> in real samples. The remarkable enhancement of the electrocatalytic activity of the composite for H<sub>2</sub>O<sub>2</sub> reduction is attributed to the synergistic effect between Co<sub>3</sub>S<sub>4</sub> and GCNNS.https://www.mdpi.com/2079-6374/13/1/108Co<sub>3</sub>S<sub>4</sub>g-C<sub>3</sub>N<sub>4</sub> nanosheetsH<sub>2</sub>O<sub>2</sub> sensorcyclic voltammetrydifferential pulse voltammetryamperometry |
| spellingShingle | Asha Ramesh Ajay Ajith Neeraja Sinha Gudipati Siva Rama Krishna Vanjari S. Abraham John Vasudevanpillai Biju Ch Subrahmanyam Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> Biosensors Co<sub>3</sub>S<sub>4</sub> g-C<sub>3</sub>N<sub>4</sub> nanosheets H<sub>2</sub>O<sub>2</sub> sensor cyclic voltammetry differential pulse voltammetry amperometry |
| title | Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> |
| title_full | Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> |
| title_fullStr | Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> |
| title_full_unstemmed | Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> |
| title_short | Hybridization of Co<sub>3</sub>S<sub>4</sub> and Graphitic Carbon Nitride Nanosheets for High-performance Nonenzymatic Sensing of H<sub>2</sub>O<sub>2</sub> |
| title_sort | hybridization of co sub 3 sub s sub 4 sub and graphitic carbon nitride nanosheets for high performance nonenzymatic sensing of h sub 2 sub o sub 2 sub |
| topic | Co<sub>3</sub>S<sub>4</sub> g-C<sub>3</sub>N<sub>4</sub> nanosheets H<sub>2</sub>O<sub>2</sub> sensor cyclic voltammetry differential pulse voltammetry amperometry |
| url | https://www.mdpi.com/2079-6374/13/1/108 |
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