[PDF]  https://doi.org/10.3952/physics.v61i4.4643

Open access article / Atviros prieigos straipsnis
Lith. J. Phys. 61, 251–260 (2021)
 

SYNTHESIS AND CHARACTERIZATION OF IRIDIUM-DOPED MULTI-WALLED CARBON NANOTUBES
Eldar Jakubovskija, Algirdas Selskisb, Ilja Ignatjevc, Giedrius Stalnionisb, and Valdas Šablinskasa
  a Institute of Chemical Physics, Faculty of Physics, Vilnius University, Saulėtekio 3, 10257 Vilnius, Lithuania
b Department of Structural Analysis of Materials, Center for Physical Sciences and Technology, Saulėtekio 3, 10257 Vilnius, Lithuania
c Department of Organic Chemistry, Center for Physical Sciences and Technology, Saulėtekio 3, 10257 Vilnius, Lithuania
Email: mail@eldar.jakubovskij.name

Received 4 August 2021; accepted 6 September 2021

Multi-walled carbon nanotubes have been prepared by chemical vapour deposition pyrolysis of ethyl alcohol at 665 °C. The addition of atoms other than carbon to the nanostructure, in our case the iridium component, leads to the formation of defects that contribute to changes in the electrical and optoelectrical properties. The formation and structural changes of multi-walled nanotubes were studied using an electron microscope, Raman and energydisperse spectrometry. Using the Raman and X-ray spectrum, a clear difference between the synthesis without and with the addition of iridium impurities was found.
Keywords: multi-walled carbon nanotubes (MWCNT), iridium-doped, nanohybrid composite, Raman spectrum, energy-dispersive X-ray spectroscopy

DAUGIASIENIŲ ANGLIES NANOVAMZDELIŲ SU IRIDŽIO PRIEMAIŠOMIS SINTEZĖ IR CHARAKTERIZAVIMAS
Eldar Jakubovskija, Algirdas Selskisb, Ilja Ignatjevc, Giedrius Stalnionisb, Valdas Šablinskasa

a Vilniaus universiteto Fizikos fakulteto Cheminės fizikos institutas, Vilnius, Lietuva
b Fizinių ir technologijos mokslų centro Medžiagų struktūrinės analizės skyrius, Vilnius, Lietuva
c Fizinių ir technologijos mokslų centro Organinės chemijos skyrius, Vilnius, Lietuva
Daugiasieniai anglies nanovamzdeliai buvo gauti etilo alkoholio cheminio garų nusodinimo (pirolizės) būdu 665 °C temperatūroje. Prie nanostruktūros pridedant kitų atomų, mūsų atveju – iridžio komponentą, susidaro defektai, kurie lemia elektrinių ir optoelektrinių savybių pokyčius. Daugiasienių nanovamzdelių susidarymas ir struktūriniai pokyčiai buvo tiriami naudojant elektroninį mikroskopą, Ramano ir energijos dispersijos spektrometrijas. Ramano ir rentgeno spindulių spektrai parodė iridžio priemaišos įnašą į sintezės procesą.


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