Carbon and Oxide Nanostructures: Synthesis, Characterisation by Noorhana Yahya

By Noorhana Yahya

This quantity covers all facets of carbon and oxide established nanostructured fabrics. the themes contain synthesis, characterization and alertness of carbon-based particularly carbon nanotubes, carbon nanofibres, fullerenes, carbon stuffed composites and so on. furthermore, steel oxides specifically, ZnO, TiO2, Fe2O3, ferrites, garnets etc., for varied functions like sensors, sun cells, transformers, antennas, catalysts, batteries, lubricants, are awarded. The ebook additionally comprises the modeling of oxide and carbon dependent nanomaterials. The booklet covers the subjects: • Synthesis, characterization and alertness of carbon nanotubes, carbon nanofibres, fullerenes • Synthesis, characterization and alertness of oxide established nanomaterials. • Nanostructured magnetic and electrical fabrics and their purposes. • Nanostructured fabrics for petro-chemical undefined. • Oxide and carbon established skinny movies for electronics and sustainable power. • idea, calculations and modeling of nanostructured materials.

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26, 51–62 (1972) 14. : J. Catal. 37, 101–105 (1975) 15. : J. Phys. Chem. Solids 54, 1841–1848 (1993) 16. : Carbon 33, 51–55 (1995) 17. : Carbon 33, 873–881 (1995) 18. : Chemtech 18, 568–576 (1988) 19. : J. Cryst. Growth 66, 632–638 (1984) 20. : Carbon 27, 745–747 (1989) 21. : J. Cryst. Growth 73, 431–438 (1985) 22. : Carbon 25, 367–375 (1987) 23. : Carbon 27, 315–323 (1989) 24. : J. Phys. Chem. 63, 133–140 (1959) 25. : Graphite Fibers and Filaments. Springer, Berlin (1988) Synthesis of Carbon Nanostructures by CVD Method 26.

In this mechanism, pyrolysis of the hydrocarbon gas occurs on the surface of the catalyst particle, releasing hydrogen gas and carbon, the later dissolving into the catalyst. The dissolved carbon then diffuses through the catalyst particle and is precipitated at the trailing edge of the particle. This step possibly relies on the presence of a temperature gradient across the particle, which is often created by the exothermic nature of the hydrocarbon decomposition. This gradient causes carbon to be precipitated at the cooler trailing edge of the catalyst particle, and therefore causing the elongation of the fibre.

A room temperature growth of carbon nanofibers using PECVD was subsequently demonstrated by Minea et al. [124]. Using dc PECVD Hofmann et al. [125] demonstrated synthesis of aligned carbon nanofibres at temperatures as low as 120  C and on plastic substrates [126]. Although MWCNT and nanofibers synthesis have been achieved through PECVD at low temperature [121], SWCNT synthesis still remains largely a high temperature process (800–1,200 C) produced in arc-discharge, laser ablation, or tube furnace.

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