Formation of nanostructured graphitic carbon from coconut waste via low-temperature catalytic graphitisation

Engineering Science and Technology, an International Journal

Andri Hardiansyah¹  Yuyun Irmawati²  Yu-I Hsu³  Henry Widodo³  Fredina Destyorini³  Hiroshi Uyama³  Ilham Nur Dimas Yahya³  Nanik Indayaningsih³  Rike Yudianti³ 

[1] Corresponding authors at: Research Center for Physics, Indonesian Institute of Sciences (LIPI), Kompleks PUSPIPTEK, Gedung 440-442, Serpong, Tangerang Selatan 15314, Banten, Indonesia (Fredina Destyorini).;Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan;Research Center for Physics, Indonesian Institute of Sciences (LIPI), Kompleks PUSPIPTEK, Gedung 440-442, Serpong, Tangerang Selatan 15314, Banten, Indonesia;

关键词: Coconut coir waste;    Value-added materials;    Catalytic graphitisation;    Graphitic carbon;   

DOI  :  

来源: DOAJ

【 摘 要 】

We report a simple and relatively low-temperature method for producing graphitic carbon from renewable and abundant coconut coir. This study also aims to promote the utilisation and conversion of locally sourced coconut coir waste into value-added materials. We obtained amorphous charcoal by carbonising coconut coir and transforming it into graphitic carbon using a Ni-based catalyst at 1300 °C for 3 h. The HR-TEM, XPS, XRD and Raman spectroscopy results confirmed the structural transformation from amorphous to graphitic nanostructure. The formation of graphitic layers is observed in the form of well-defined lattice fringes that are separated by an interplanar distance of 0.3367 nm around Ni. Graphitic carbon has a high graphitisation degree of 84.88%, which is slightly lower than that of commercial graphite (90.23%). This structural change enhances the electrical conductivity of powder carbon from 14.97 to 25.75 S/cm under 741 kPa of pressure. Producing graphitic and conductive carbon from renewable coconut coir can alleviate the environmental burden of coconut waste.

【 授权许可】

Unknown