Yield optimization of nanocarbons prepared via chemical vapor decomposition of carbon dioxide using response surface methodology

Ghazaleh Allaedini, Siti Masrinda Tasirin, Payam Aminayi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In this study, the effect of temperature, carbon source flow rate, and catalyst loading on the yield and morphology of the carbon nanotubes obtained via the direct decomposition of CO2 in the chemical vapor decomposition (CVD) method has been investigated. An experimental design based on response surface methodology (RSM) was employed to investigate and optimize the effect of the reaction parameters on the yield of the obtained nanocarbons, and the most significant factor was found to be the reaction temperature. The carbon deposition amount was measured using the energy-dispersive X-ray spectroscopy (EDS) results. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) micrographs were used to illustrate the structure and morphology of the obtained nanocarbons. The crystallography of the obtained nanocarbons at various temperatures was characterized by the X-ray diffraction (XRD) patterns. Raman spectrum of the obtained CNTs showed that the ratio of the intensity of the G band to D band (IG/ID) for the CNTs obtained at 1100 °C is equal to 0.8 which is indicative of a crystalline structure with few defects. Moreover, the formation of multi-walled carbon nanotubes (MWCNTs) was confirmed using thermogravimetric analysis (TGA).

Original languageEnglish
Pages (from-to)196-205
Number of pages10
JournalDiamond and Related Materials
Volume66
DOIs
Publication statusPublished - 1 Jun 2016

Fingerprint

Carbon Dioxide
carbon dioxide
Carbon dioxide
Carbon Nanotubes
carbon nanotubes
Vapors
methodology
vapors
Decomposition
decomposition
optimization
Carbon nanotubes
Carbon
Crystallography
Design of experiments
Temperature
Diffraction patterns
Thermogravimetric analysis
Raman scattering
Energy dispersive spectroscopy

Keywords

  • Carbon nanotubes
  • Chemical vapor decomposition (CVD)
  • CO decomposition
  • Ge/MgO catalyst

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Chemistry(all)

Cite this

Yield optimization of nanocarbons prepared via chemical vapor decomposition of carbon dioxide using response surface methodology. / Allaedini, Ghazaleh; Tasirin, Siti Masrinda; Aminayi, Payam.

In: Diamond and Related Materials, Vol. 66, 01.06.2016, p. 196-205.

Research output: Contribution to journalArticle

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