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Increasing the yield in the exfoliation of graphite using serum from skim natural rubber latex in ultrasound-induced and shear-induced systems |
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| รหัสดีโอไอ | |
| Creator | 1. Natchanon Jirasitthanit 2. Panu Danwanichakul |
| Title | Increasing the yield in the exfoliation of graphite using serum from skim natural rubber latex in ultrasound-induced and shear-induced systems |
| Publisher | Faculty of Engineering, Khon Kaen University |
| Publication Year | 2567 |
| Journal Title | Engineering and Applied Science Research |
| Journal Vol. | 51 |
| Journal No. | 1 |
| Page no. | 42-49 |
| Keyword | Liquid-phase exfoliation, Ammonia, Skim natural rubber latex, Graphite, Graphene |
| URL Website | https://ph01.tci-thaijo.org/index.php/easr/index |
| Website title | Engineering and Applied Science Research |
| ISSN | 2539-6161 |
| Abstract | The green exfoliation of graphite using the serum from skim natural rubber latex, with some left-over ammonia, was investigated. The methods proposed to increase the exfoliation yield included varying the graphite concentration from 10 to 25 mg/ml of serum, using smaller graphite powders obtained from the sedimentation of a graphite precursor, and increasing rotor speed of a homogenizer. The two former cases were performed in an ultrasonic bath. In the first case, using 10 mg of graphite/ml of serum gave the maximum yield of 0.70%. In the second case of using graphite suspended in the supernatant after 15-min settling as starting material in exfoliation, the yield was increased to 0.74% at the graphite concentration of 25 mg/ml. In the last case, using the homogenizer probe at 5,400 rpm for 20 min gave the yield up to 10.5%. Based on Raman spectroscopy, all these exfoliated products were multilayer graphene-based materials and could be comparable to the commercial graphene-based product. |
