Fabrication of Graphitic Carbon Spheres via a Hydrothermal Carbonization Combined Catalytic Graphitization Method Using Cobalt as Catalysts

Abstract:

Graphitic carbon spheres (GCS) with an average diameter of 1.6 μm were prepared via a hydrothermal carbonization combined catalytic graphitization method using glucose as carbon source and cobalt nitrate as catalyst precursor. The as-prepared GCS were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectroscopy. It was found that the optimal weight ratio of Co catalyst for graphitization of amorphous carbonaceous spheres was 2.0 wt%, and the optimal temperature and dwelling time required for graphitization were respectively 1100 °C and 3 h.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 807-812
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.807
• Online since: August 2018
• Authors: Sai Sai Li*, Jun Kai Wang, Qing Zhu, Xiao Wei Zhao, Hai Jun Zhang
• Keywords: Catalytic Graphitization, Graphitic Carbon Spheres, Hydrothermal Carbonization

References

[1] K. Asaka, Y. Saito, Spontaneous graphenization of amorphous carbon on clean surfaces of nanometer-sized nickel particles at room temperature, Carbon. 103 (2016) 352-355.

DOI: 10.1016/j.carbon.2016.03.031

[2] K. Barbera, L. Frusteri, G. Italiano, Low-temperature graphitization of amorphous carbon nanospheres, Chinese J Catal. 35 (2014) 869-876.

DOI: 10.1016/s1872-2067(14)60098-x

[3] K.J. Briston, J.M. Martin, C. Héau, Fabrication of nanoporous carbon by electrical transformation of amorphous carbon nanospheres, Nanotechnology. 23 (2012) 485602.

DOI: 10.1088/0957-4484/23/48/485602

[4] C.M. Lei, W.L. Yuan, H.C. Huang, Synthesis and conductivity measurement of carbon spheres by catalytic CVD using non-magnetic metal complexes, Synthetic Met. 161 (15–16) 2011 1590-1595.

DOI: 10.1016/j.synthmet.2011.05.023

[5] M. Karthik, A. Faik, S. Doppiu, A simple approach for fabrication of interconnected graphitized macroporous carbon foam with uniform mesopore walls by using hydrothermal method, Carbon. 87 (2015) 434-443.

DOI: 10.1016/j.carbon.2015.02.060

[6] G.B. Barin, I. de Fátima Gimenez, L.P. da Costa, Influence of hydrothermal carbonization on formation of curved graphite structures obtained from a lignocellulosic precursor, Carbon. 78 (2014) 609-612.

DOI: 10.1016/j.carbon.2014.07.017

[7] J. Wang, X. Deng, H. Zhang, Synthesis of carbon nanotubes via Fe-catalyzed pyrolysis of phenolic resin, Physica E. 86 (2017) 24-35.

DOI: 10.1016/j.physe.2016.09.016

[8] J. Wang, X. Deng, H. Zhang, Synthesis of carbon nanotubes from phenolic resin using nickel nitrate as a catalyst precursor, Key Eng. Mater. 697 (2016) 691-694.

DOI: 10.4028/www.scientific.net/kem.697.691

[9] Z. Huang, F. Liang, J. Wang, Catalytic preparation of carbon nanotubes from phenolic resin using cobalt nanoparticle, J.Chin. Ceram. Soc. 44 (2016) 1388-1394.

[10] H. Yang, G. Wang, N. Ding, Size-controllable synthesis of carbon spheres with assistance of metal ions, Synthetic Met. 214 (2016) 1-4.

DOI: 10.1016/j.synthmet.2016.01.011

[11] S. Li, F. Liang, J. Wang, Preparation of mono-dispersed carbonaceous spheres via hydrothermal process, Adv Powder Technol. 28 (2017) 2648-2657.

DOI: 10.1016/j.apt.2017.07.017

[12] M. Xie, J. Yang, J. Liang, In situ hydrothermal deposition as an efficient catalyst supporting method towards low-temperature graphitization of amorphous carbon, Carbon 77 (2014) 215-225.

DOI: 10.1016/j.carbon.2014.05.024