Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature
Closing the resource loop by transforming plastic waste into higher value products is an important step for changing from a linear to circular economy. Using a sequential pyrolysis and catalytic chemical vapour deposition process, plastics have been successfully converted into carbon nanotubes (CNTs...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/145364 |
| _version_ | 1824456695437328384 |
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| author | Moo, James Guo Sheng Veksha, Andrei Oh, Wen-Da Giannis, Apostolos Udayanga, W. D. Chanaka Lin, Sheng-Xuan Ge, Liya Lisak, Grzegorz |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Moo, James Guo Sheng Veksha, Andrei Oh, Wen-Da Giannis, Apostolos Udayanga, W. D. Chanaka Lin, Sheng-Xuan Ge, Liya Lisak, Grzegorz |
| author_sort | Moo, James Guo Sheng |
| collection | NTU |
| description | Closing the resource loop by transforming plastic waste into higher value products is an important step for changing from a linear to circular economy. Using a sequential pyrolysis and catalytic chemical vapour deposition process, plastics have been successfully converted into carbon nanotubes (CNTs). Pure low density polyethylene (LDPE), polypropylene (PP) and mixed plastics (MP) were used as raw materials in the two-stage process. In the first stage, the plastics were pyrolysed at 600 °C. In the second stage, the non-condensable gases were converted into multi-walled CNTs over a Ni-based catalyst at two different temperatures, 500 and 800 °C. The influence of plastic feedstock and synthesis temperature on the performance of plastic-derived CNTs as electrode materials in electrocatalysis was investigated. The CNTs were evaluated as electrode materials for their heterogeneous electron transfer rate using a redox probe, which showed improved electrochemical behaviour. For oxygen reduction reaction (ORR), CNTs produced at 500 °C demonstrated superior performance compared to those produced at 800 °C. Influence of feedstock on electrocatalytic ORR activity of the as synthesised CNTs was marginal. Temperature was the governing factor influencing the properties of CNTs due to annealing and oxidation of edge defects generated during synthesis at higher temperatures. |
| first_indexed | 2025-02-19T03:58:11Z |
| format | Journal Article |
| id | ntu-10356/145364 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:58:11Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1453642020-12-19T20:11:20Z Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature Moo, James Guo Sheng Veksha, Andrei Oh, Wen-Da Giannis, Apostolos Udayanga, W. D. Chanaka Lin, Sheng-Xuan Ge, Liya Lisak, Grzegorz School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Civil engineering Carbon Nanotubes Electrodes Closing the resource loop by transforming plastic waste into higher value products is an important step for changing from a linear to circular economy. Using a sequential pyrolysis and catalytic chemical vapour deposition process, plastics have been successfully converted into carbon nanotubes (CNTs). Pure low density polyethylene (LDPE), polypropylene (PP) and mixed plastics (MP) were used as raw materials in the two-stage process. In the first stage, the plastics were pyrolysed at 600 °C. In the second stage, the non-condensable gases were converted into multi-walled CNTs over a Ni-based catalyst at two different temperatures, 500 and 800 °C. The influence of plastic feedstock and synthesis temperature on the performance of plastic-derived CNTs as electrode materials in electrocatalysis was investigated. The CNTs were evaluated as electrode materials for their heterogeneous electron transfer rate using a redox probe, which showed improved electrochemical behaviour. For oxygen reduction reaction (ORR), CNTs produced at 500 °C demonstrated superior performance compared to those produced at 800 °C. Influence of feedstock on electrocatalytic ORR activity of the as synthesised CNTs was marginal. Temperature was the governing factor influencing the properties of CNTs due to annealing and oxidation of edge defects generated during synthesis at higher temperatures. Economic Development Board (EDB) Nanyang Technological University Published version The authors would like to acknowledge the Nanyang Environment and Water Research Institute, Nanyang Technological University (Singapore) and Economic Development Board - Singapore for financial support of this research. 2020-12-18T06:56:41Z 2020-12-18T06:56:41Z 2019 Journal Article Moo, J. G. S., Veksha, A., Oh, W.-D., Giannis, A., Udayanga, W. D. C., Lin, S.-X., . . . Lisak, G. (2019). Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature. Electrochemistry Communications, 101, 11-18. doi:10.1016/j.elecom.2019.02.014 1388-2481 https://hdl.handle.net/10356/145364 10.1016/j.elecom.2019.02.014 101 11 18 en Electrochemistry Communications © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/). application/pdf |
| spellingShingle | Engineering::Civil engineering Carbon Nanotubes Electrodes Moo, James Guo Sheng Veksha, Andrei Oh, Wen-Da Giannis, Apostolos Udayanga, W. D. Chanaka Lin, Sheng-Xuan Ge, Liya Lisak, Grzegorz Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title | Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title_full | Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title_fullStr | Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title_full_unstemmed | Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title_short | Plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction : effects of plastic feedstock and synthesis temperature |
| title_sort | plastic derived carbon nanotubes for electrocatalytic oxygen reduction reaction effects of plastic feedstock and synthesis temperature |
| topic | Engineering::Civil engineering Carbon Nanotubes Electrodes |
| url | https://hdl.handle.net/10356/145364 |
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