| Autor: |
Ristiani, Deril, Maulida, Pramitha Yuniar Diah, Firdaus, Aulia Anisa, Asih, Retno, Astuti, Fahmi, Baqiya, Malik Anjleh, Tunmee, Sarayut, Nakajima, Hideki, Darminto, Darminto |
| Zdroj: |
Materials Science Forum; July 2023, Vol. 1094 Issue: 1 p129-134, 6p |
| Abstrakt: |
Graphenic carbon (GC) has been successfully synthesized from biomass (coconut shell charcoal) using the liquid phase exfoliation method. The dopants, in the form of light atoms such as boron (B-GC), were introduced with the aim of improving their magnetic properties. X-ray diffraction was used to identify the GC and B-GC, and the results show broad peaks around 24° and 43°, indicating the presence of graphene-like carbon structure. The bonding structure was also analyzed using X-ray photoelectron (XPS). It reveals the main bonds in GC consist of sp2, sp3, and C=O. While the B-GC sample shows an additional bond, namely the B-C bond, as an indicator of the successful doping process of B into the GC structure. Both GC and B-GC show weak room temperature ferromagnetism. Furthermore, these findings show that introducing boron atoms into the graphenic structure can improve magnetization. |
| Databáze: |
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