Low-temperature graphitization by amine-assisted combustion of graphite oxide
Abstract Scalable production of bulk graphene materials, by deoxygenation and partial graphitization of graphite oxide (GO), is considered the most mature pathway towards graphene-fortified products. We reimagined a combustion process in which a mixture of GO (the oxidant) and amino acid (high-energ...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
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| Series: | npj 2D Materials and Applications |
| Online Access: | https://doi.org/10.1038/s41699-025-00572-2 |
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| Summary: | Abstract Scalable production of bulk graphene materials, by deoxygenation and partial graphitization of graphite oxide (GO), is considered the most mature pathway towards graphene-fortified products. We reimagined a combustion process in which a mixture of GO (the oxidant) and amino acid (high-energy fuel and reductant) undergoes solid-state reactions at relatively benign conditions (nominal temperature ~900 °C) to produce combusted reduced-graphite oxide (C-rGO) powders. The product is strewn with ordered and long graphene crystallites ( > 80 nm long), exhibits heavily graphitized (002) reflections in XRD and sharp selected area diffraction patterns, with a high C/O ratio ( > 18), and significant nitrogen doping (2.93 at%). We demonstrated that these inks can be printed into patterns on plastic substrates such as PET and roll-compressed to produce highly conductive thin films. Prototype chipless RFID tags were fabricated with a resonant microwave frequency of 3.986 GHz, capable of wireless reading from a distance of 28 mm. |
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| ISSN: | 2397-7132 |