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Browsing by Subject "Carbon"

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    • Article  

      Composite DLC-metal/metal-carbide coatings produced by electron enhanced unbalanced magnetron sputtering 

      Rebholz, Claus; Ziegele, H.; Voevodin, A. A.; Schneider, J. M.; Matthews, A. (1997)
      Composite coatings consisting of metal containing diamond like carbons were produced by unbalanced magnetron sputtering in a closed field magnetic configuration. Targets of Pta and W were poisoned with acetylene during the ...

    • Article  

      Geometrically strained carbenes: Interdependence among geometry, spin multiplicity and reactivity 

      Takahashi, Y.; Nicolaïdes, Andrew N.; Tomioka, H. (2001)
      The singlet and triplet states of cyclobutenylidene 1 and benzocyclobutenylidene 2 have been studied computationally (using ab initio and DFT methods) in order to assess the effect of angle strain on the S-T gap of vinyl- ...

    • Article  

      Low temperature and cost-effective growth of vertically aligned carbon nanofibers using spin-coated polymer-stabilized palladium nanocatalysts 

      Saleem, A. M.; Shafiee, S.; Krasia-Christoforou, T.; Savva, I.; Göransson, G.; Desmaris, V.; Enoksson, P. (2015)
      We describe a fast and cost-effective process for the growth of carbon nanofibers (CNFs) at a temperature compatible with complementary metal oxide semiconductor technology, using highly stable polymer-Pd nanohybrid colloidal ...

    • Article  

      Molecular dynamic simulations of carbon nanotubes in CO2 atmosphere 

      Alexiadis, A.; Kassinos, Stavros C. (2008)
      This work investigates by means of molecular dynamics the filling of carbon nanotubes by carbon dioxide molecules. Nanotubes of various sizes are simulated and the resulting CO2 density calculated. The effects of various ...

    • Article  

      Multilayer composite ceramic-metal-DLC coatings for sliding wear applications 

      Voevodin, A. A.; Schneider, J. M.; Rebholz, Claus; Matthews, A. (1996)
      The design of anti-friction coatings able to perform well in different wear conditions without lubricants requires a combination of adequate hardness and toughness, good adhesion, a low friction coefficient and a low wear ...

    • Article  

      Nanoporous activated carbon cloth as a versatile material for hydrogen adsorption, selective gas separation and electrochemical energy storage 

      Kostoglou, N.; Koczwara, C.; Prehal, C.; Terziyska, V.; Babic, B.; Matovic, B.; Constantinides, G.; Tampaxis, C.; Charalambopoulou, Georgia; Steriotis, T.; Hinder, S.; Baker, M. A.; Polychronopoulou, K.; Doumanidis, C. C.; Paris, O.; Mitterer, C.; Rebholz, Claus (2017)
      The efficient storage of energy combined with a minimum carbon footprint is still considered one of the major challenges towards the transition to a progressive, sustainable and environmental friendly society on a global ...

    • Article  

      Nanostructure, mechanical and tribological properties of reactive magnetron sputtered TiCx coatings 

      Polychronopoulou, K.; Rebholz, Claus; Baker, M. A.; Theodorou, L.; Demas, N. G.; Hinder, S. J.; Polycarpou, A. A.; Doumanidis, C. C.; Böbel, K. (2008)
      This study describes the correlation between microstructure, mechanical and tribological properties of TiCx coatings (with x being in the range of 0-1.4), deposited by reactive magnetron sputtering from a Ti target in ...

    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, Andréas; Ioannou, Ioannis; Efstathiou, Angelos M.; Kyratsi, Theodora (2016)
      The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate ...

    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, I.; Petallidou, Klito C.; Vasiliades, M. A.; Delimitis, A.; Ioannou, I.; Efstathiou, A. M.; Kyratsi, Theodora (2016)
      The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate ...

    • Article  

      A reductive-aggregation route to [Mn12O12(OMe) 2(O2CPh)16(H2O)2] 2- single-molecule magnets related to the [Mn12] family 

      Tasiopoulos, Anastasios J.; Wernsdorfer, W.; Abboud, K. A.; Christou, George (2004)
      Axes of power: Jahn-Teller isomerism (that is, Jahn-Teller distortion along different axes) accounts for the presence of both faster and slower relaxing magnetization dynamics of the title compound (see core structure

    • Article  

      Reforming of methane with carbon dioxide to synthesis gas over supported Rh catalysts 

      Tsipouriari, Vaso A.; Efstathiou, Angelos M.; Zhang, Z. L.; Verykios, Xenophon E. (1994)
      Reforming of methane with carbon dioxide to synthesis gas (CO/H2) has been investigated over rhodium supported on SiO2, TiO2, γ-Al2O3, MgO, CeO2, and YSZ (ZrO2 (8 mol% Y2O3)) catalysts in the temperature range of 650-750°C ...

    • Article  

      Stereochemistry of the [4 + 2] cycloadditions of trans,trans- and cis,trans-2,4-hexadiene to C60 

      Chronakis, Nikos; Froudakis, G.; Orfanopoulos, Michael (2002)
      The [4 + 2] cycloaddition of trans,trans-2,4-hexadiene with C60 proceeds via a concerted mechanism with retention of stereochemistry in the cycloadduct 1a. However, when cis,trans-2,4-hexadiene reacts with C60, isomerization ...

    • Article  

      Strong paramagnetism and possible ferromagnetism in pure carbon nanofoam produced by laser ablation 

      Rode, A. V.; Gamaly, E. G.; Christy, A. G.; Gerald, J. G. Fitz; Hyde, S. T.; Elliman, R. G.; Luther-Davies, B.; Veinger, A. I.; Androulakis, J.; Giapintzakis, John (2005)
      We report the production of a hierarchically nanostructured magnetic carbon foam by high-repetition-rate laser ablation of glassy carbon in Ar. The clusters contain both sp2 and sp3 bonded carbon atoms. The material contains ...

    • Article  

      Studies of steam-activated viscose rayon chars 

      Tomlinson, J. B.; Theocharis, Charis R. (1992)
      Standard techniques, such as nitrogen adsorption, mercury porosimetry, and X-ray photoelectron spectroscopy, have been used to characterise steam-activated viscose rayon-derived chars pretreated with aqueous solutions of ...

    • Article  

      Synthesis, structural characterization and in vitro inhibitory studies against human breast cancer of the bis-(2,6-di-tert-butylphenol)tin(iv) dichloride and its complexes 

      Shpakovsky, D. B.; Banti, Christina N.; Beaulieu-Houle, G.; Kourkoumelis, Nikolaos; Manoli, Maria; Manos, Manolis J.; Tasiopoulos, Anastasios J.; Hadjikakou, Sotiris K.; Milaeva, E. R.; Charalabopoulos, Konstantinos A.; Bakas, Thomas V.; Butler, I. S.; Hadjiliadis, Nick (2012)
      Four new organotin(iv) complexes of bis-(2,6-di-tert-butylphenol)tin(iv) dichloride [(tert-Bu-)2(HO-Ph)]2SnCl2 (1) with the heterocyclic thioamides 2-mercapto-pyrimidine (PMTH), 2-mercapto-4-methyl- pyrimidine (MPMTH), ...

    • Conference Object  

      Transmission electron microscopy of steam activated viscose rayon chars 

      Tomlinson, John B.; Theocharis, Charis R. (Publ by Electrochemical Soc Inc, 1991)
      It was established that TEM could be employed to provide complementary data on the nature of the pores formed, in particular, their size, shape and distribution within the fibre cross-section. It was found that the borate ...

    • Article  

      X-Ray diffraction investigations of magnetron sputtered TiCN coatings 

      Schneider, J. M.; Voevodin, A.; Rebholz, Claus; Matthews, A.; Hogg, J. H. C.; Lewis, D. B.; Ives, M. (1995)
      X-ray diffraction measurements were performed on titanium carbonitride coatings produced in an electron enhanced, unbalanced magnetron system. The films were deposited onto AISI 316 stainless steel substrates with an argon ...

    • Doctoral Thesis  Open Access

      Ανάπτυξη νέων καταλυτικών συστημάτων βασισμένων στο CeO2 για την αντίδραση WGS 

      Πεταλλίδου, Κλειτώ Χ. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2014-06)
      H αντίδραση Water-Gas Shift (WGS, CO+H2OCO2+H2, ΔHo= -41 KJ/mol) αποτελεί σημαντικό μέρος του δικτύου των αντιδράσεων βιομηχανικής παραγωγής H2 μέσω αναμόρφωσης υδρογονανθράκων. Το αέριο προϊόν, πλούσιο σε Η2 είναι δυνατό ...

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