Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
The Influence of different experimental parameters on Pd based chemical vapor deposition growncarbon nanostructures
Umeå University, Faculty of Science and Technology, Department of Physics.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Carbon nanostructures were fabricated by catalytic decomposition of acetylene ondifferently shaped palladium (Pd) nanocatalysts (nanoplates (triangle/hexagonal) andnanocubes) synthesized by an aqueous solution technique. The fabricated carbonnanostructures were investigated by transmission electron microscopy (TEM), itconsists of multi-walled carbon nanotubes (MWCNTs) together with significant numberof helical carbon nanofibers (HCNFs) and straight carbon nanofibers (SCNFs). Thecontributions of the three major components were highly dependent on the morphologyof nanocatalysts, supportive gas ammonia, substrates and on the growth temperatures.Pd nanocatalysts shows structural sensitivity, the nanostructures synthesized on Pdnanoplates at 550 °C have almost the same amount of MWCNTs and carbon nanofibers(CNFs). At 650 °C the fabricated nanostructures on Pd nanoplates consist of more than95% MWCNTs. The yield and average diameter of all the three components increaseswith rising growth temperature (550-700 °C) and the growth seized completely at 750°C. Ammonia supports the growth of MWCNTs. As the nanocatalysts particles areembedded in the centre of the grown nanostructures; this suggests two directionalgrowths for CNFs.

Place, publisher, year, edition, pages
2013. , 41 p.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-84072OAI: oai:DiVA.org:umu-84072DiVA: diva2:679458
Subject / course
Examensarbete i teknisk fysik
Educational program
Master's Programme in Physics
Presentation
2013-11-08, umeå, 10:00 (English)
Supervisors
Examiners
Available from: 2013-12-16 Created: 2013-12-16 Last updated: 2013-12-16Bibliographically approved

Open Access in DiVA

fulltext(2129 kB)249 downloads
File information
File name FULLTEXT01.pdfFile size 2129 kBChecksum SHA-512
27a8099346167f80aa319f99fd50ab0e0c0d716a9e753af1158f89eae3267facf33b473f3000fb12782755d096dd26e68f2caabbc8e549cdd47dc89e3840ed06
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
khan, asghar ali
By organisation
Department of Physics
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 249 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 101 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf