Nguyen Van, T.D. and Sufian, S. and Mansor, N. and Yahya, N. (2014) Characterization of carbon nanofibers treated with thermal nitrogen as a catalyst support using point-of-zero charge analysis. Journal of Nanomaterials, 2014. ISSN 16874110
Full text not available from this repository.Abstract
The chemical and physical purification of carbon nanofiber exposes more anchoring sites between meal precursors and carbon surface but thermal Ngas flow maintains the crystal's structure as well as its defect and edge sites, referred to as active sites or anchoring sites. After calcination in nitrogen at 450°C, samples were characterized by Raman spectra X-ray diffraction, as well as thermogravimetric and nitrogen physisorption analyses. Results showed a relatively lower fraction of amorphous carbon to graphite, indicating a greater removal of amorphous carbon. Moreover, the disorder intensity of carbon nanofibers that were treated in Nflow rate of 1 L/min and 3 hours, called 1Gcom-3h sample, achieved far more defect sites compared with unmodified carbon nanofiber. In addition, the surface areas of mesoporous carbon nanofibers decreased over prolonged residence time. The carbon nanofiber support-metal cation interaction therefore improved the deposition of iron when the point-of-zero charge reading was greater than four. © 2014 Thien Duc Nguyen Van et al.
Item Type: | Article |
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Additional Information: | cited By 18 |
Uncontrolled Keywords: | Carbon nanofibers; Crystal structure; Nanofibers; Nitrogen; Surface defects; X ray diffraction, Carbon surface; Defect sites; Mesoporous carbon nanofibers; Metal cation; Nitrogen physisorption; Point of zero charge; Residence time; Thermo-gravimetric, Amorphous carbon |
Depositing User: | Mr Ahmad Suhairi UTP |
Date Deposited: | 09 Nov 2023 16:16 |
Last Modified: | 09 Nov 2023 16:16 |
URI: | https://khub.utp.edu.my/scholars/id/eprint/4551 |