Essays about: "SWCNTs"

Found 4 essays containing the word SWCNTs.

  1. 1. Novel Ammonia Storage Materials for SCR Systems : Carbon Materials – Salt Composites

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Nicolas Grimaldos Osorio; [2019]
    Keywords : magnesium chloride; ammonia; carbon materials; SCR; NOx reduction; sorption;

    Abstract : The emissions of nitrogen oxides (NOx) are a serious environmental problem due to its relationship with the formation of smog, acid rain and because they are dangerous for human and animal health. These gases are produced in high quantities in diesel engines used for automotive applications, and different strategies are being used to reduce them, among which are the Selective Catalytic Reduction (SCR) systems. READ MORE

  2. 2. Patterned Nanocomposite of Carbon Nanotube/Polymer

    University essay from Umeå universitet/Institutionen för fysik

    Author : Saeed Motaragheb Jafarpour; [2017]
    Keywords : ;

    Abstract : Single walled carbon nanotubes (SWCNTs) are carbon based nanostructures with extraordinary electronical and mechanical properties. They are used in a wide range of applications, usually embedded in polymer as fillers to form polymer based nanocomposites, in order to affect the electronic behavior of the polymer matrix. READ MORE

  3. 3. Investigation of catalyst composition for cobalt and iron catalyst on the chirality of grown single walled carbon nanotubes

    University essay from Umeå universitet/Institutionen för fysik

    Author : Saeed Motaragheb Jafarpour; [2017]
    Keywords : ;

    Abstract : The synthesis of type-enriched semiconducting or metallic single-walled carbon nanotubes (sc/m-SWCNTs) with high quality by means of catalytic chemical vapor deposition (CCVD) are essential prerequisites for implementing of SWCNTs into nanodevices. In particular, the Fe−Co bimetallic catalysts system is promising due to its ability to grow SWCNTs by CCVD. READ MORE

  4. 4. Carbon Nanotube Raman Spectra Calculations using Density Functional Theory

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Johan Jirlén; Emil Kauppi; [2017]
    Keywords : Density Functional Theory; DFT; Single-Walled Carbon Nanotubes; SWCNTs; Raman; Spectra; VASP;

    Abstract : Utilizing density functional theory (DFT) the Vienna Ab initio Simulation Package (VASP) was used to calculate the Raman spectra for five single-walled carbon nanotubes (SWCNTs) with chiralities (4,4), (6,6), (8,0), (12,0) and (7,1). The radial breathing mode (RBM), when compared with experimental frequencies, shows good correlation. READ MORE