Morphology Change and Structural ‎Evaluation of Carbon Nanostructures

Authors

  • A. Ghozatloo ‎Research Institute of Petroleum Industry (RIPI), Azadi Sport Complex, P.O. Box: 14665-‎‎137, Tehran, I. R. Iran.‎
  • A. Yazdani ‎Research Institute of Petroleum Industry (RIPI), Azadi Sport Complex, P.O. Box: 14665-‎‎137, Tehran, I. R. Iran.‎
  • M. Shariaty-Niassar Transport Phenomena & Nanotech. Lab (TPNT), School of Engineering, University of Tehran, ‎P.O. Box: 11155-4563, Tehran, I. R. Iran.‎
Abstract:

   In this study, the change of porosity and roughness of carbon nanostructures, including fullerenes, carbon nanotubes and graphene was investigated according to oxidation process. The effect of oxidation was more sensible on smoother surface of nanostructures. Oxidation increases surface roughness of graphene up to 5.2% and porosity up to 35.2%. While, roughness of hummers graphene is 13.1% higher than pure graphene. According to AFM results, oxidation can increase porosity and roughness of the surface. The amount of this increase is clearly a function of surface smoothness and multi-dimensional geometry of nanostructure. The functionalization processes have a positive effect on reducing the clustering phenomenon of nanoparticles and reduction of nanostructure particle size in their clusters that causes increases in surface porosity and roughness. So, functionalization processes can strongly change morphology of the nanoparticles in terms of structure, surface properties and geometry and according to these changes, nanostructures shows different behaviors.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Investigation of Hardness, Morphology and Structural Analysis of NiCrBSi Composite Coating on Plain Carbon Steel

High velocity oxy-fuel (HVOF) is one of the emerging technologies among the thermal spraying techniques, for producing uniform and dense coatings, having high hardness and very low porosity. A NiCrBSi alloy coating was prepared with approximately 400µm thick, on the A516 steel by means of HVOF and was analyzed with regard to its detailed microstructures, phase formation, thickness, roughness an...

full text

morphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials

ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...

15 صفحه اول

IR and UV Spectroscopic Analysis of C20 Carbon Nanostructures

Infrared (IR) and ultraviolet (UV) spectroscopic analysis of eight structural isomers of C20 carbon nanostructures, i.e. ring, tadpole, bow-tie, dumb-bell, spiro, propellane, bowl and cage, were performed at different levels of theory including semi-empirical (AM1 and PM3), Hartree-Fock (HF/6-31++G, 6-31++G**) and density functional theory (B3LYP/6-31++G, 6-31++G**). A broad range of IR spectra...

full text

investigation of the electronic properties of carbon and iii-v nanotubes

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

15 صفحه اول

Theoretical evaluation of hydrogen storage capacity in pure carbon nanostructures

Carbon nanotubes have been proposed as promising hydrogen storage materials for the automotive industry. By theoretical analyses and total-energy density functional theory calculations, we show that contribution from physisorption in nanotubes, though significant at liquid nitrogen temperature, should be negligible at room temperature; contribution from chemisorption has a theoretical upper lim...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 13  issue 2

pages  97- 104

publication date 2017-05-01

By following a journal you will be notified via email when a new issue of this journal is published.

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023