Carbon nanostructures grown on 3D silicon carbide foams: Role of intermediate silica layer and metal growth

Saheed A. Ganiyu, Oki Muraza, Abbas S. Hakeem, Khalid Alhooshani, Muataz Atieh

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Carbon nanostructures (CNSs) in the form of fibers and spheres have been successfully grown on 3 dimensional (3D) macroscopic silicon carbide (SiC) foams with the aid of mesoporous silica-films as interfacial layer via ethylene decomposition on nickel and iron as growth catalysts using chemical vapor deposition (CVD). The effect of growth temperature from 600 to 900°C on morphology, diameter and specific surface area of as-grown CNSs was studied. The as-grown CNSs were characterized by field emission scanning electron microscope (FE-SEM) and transmission electron microscope (TEM) to examine the morphology, diameter, microstructure and defect. Crystallinity and degree of graphitization were determined by X-ray diffraction and Raman spectrometer. Textural properties such as specific surface area, pore size and pore volume were measured by nitrogen gas adsorption-desorption. Uniform distribution of CNSs on 3D SiC-foam was obtained at 700°C for short synthesis time (30min), as well as high surface area of above 100m2/g. Degree of graphitization of CNSs grown on modified SiC substrates by using Ni as growth catalyst was higher than the one with the Fe-growth catalyst.

Original languageEnglish
Pages (from-to)110-118
Number of pages9
JournalChemical Engineering Journal
Volume258
DOIs
Publication statusPublished - 15 Dec 2014
Externally publishedYes

Fingerprint

foam
Silicon carbide
Silicon Dioxide
silicon
Foams
Nanostructures
Carbon
silica
Metals
Silica
metal
graphitization
carbon
Graphitization
surface area
catalyst
Specific surface area
Catalysts
Electron microscopes
electron

Keywords

  • Carbon nanostructures
  • CVD
  • Mesoporous silica-films
  • Metal growth
  • Silicon-carbide foam

ASJC Scopus subject areas

  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry
  • Chemical Engineering(all)

Cite this

Carbon nanostructures grown on 3D silicon carbide foams : Role of intermediate silica layer and metal growth. / Ganiyu, Saheed A.; Muraza, Oki; Hakeem, Abbas S.; Alhooshani, Khalid; Atieh, Muataz.

In: Chemical Engineering Journal, Vol. 258, 15.12.2014, p. 110-118.

Research output: Contribution to journalArticle

Ganiyu, Saheed A. ; Muraza, Oki ; Hakeem, Abbas S. ; Alhooshani, Khalid ; Atieh, Muataz. / Carbon nanostructures grown on 3D silicon carbide foams : Role of intermediate silica layer and metal growth. In: Chemical Engineering Journal. 2014 ; Vol. 258. pp. 110-118.
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