Browsing by Subject "XRD"

Now showing items 1-12 of 12

    • Article  

      Comparative study of La-Sr-Fe-O perovskite-type oxides prepared by ceramic and surfactant methods over the CH4 and H2 lean-deNOx 

      Stathopoulos, Vassilis N.; Belessi, Vassiliki C.; Bakas, Thomas V.; Neophytides, Stylianos G.; Costa, Costas N.; Pomonis, Phillippos J.; Efstathiou, Angelos M. (2009)
      Mixed oxides of the general formula La0.8Sr0.2FeO3-x were prepared by ceramic and surfactant methods and tested towards the NO/H2/O2 and NO/CH4/O2 lean-deNOx reactions in the 200-450 °C range. The materials were characterized ...
    • Article  

      Deactivation of Pd/Ce 0.5Zr 0.5O 2 model three-way catalyst by P, Ca and Zn deposition 

      Christou, Stavroula Y.; García-Rodríguez, S.; Fierro, José Luis García; Efstathiou, Angelos M. (2012)
      The negative effects of P, P-Ca and P-Zn deposition on the surface of a model 1wt% Pd/Ce 0.5Zr 0.5O 2 " three-way" catalyst (TWC) on its structural, morphological, textural, oxygen storage and release, and catalytic ...
    • Article  

      Nanostructural studies of PVD TiAlB coatings 

      Monclus, M. A.; Baker, M. A.; Rebholz, Claus; Stolojan, V.; Gibson, P. N.; Leyland, A.; Matthews, A. (2006)
      TiAlB coatings with different compositions were deposited by co-sputtering from TiAl and TiB2 targets onto AISI316 stainless steel substrates at a temperature of 170 °C. The stoichiometry and nanostructure have been studied ...
    • Article  

      Pine needle–derived biochar adsorbents for removal of Sm(III) and competitive toxic metals from model aqueous matrices 

      Philippou, Katerina; Evangelou, Christina; Ioannidis, Ioannis; Pashalidis, Ioannis (Elsevier, 2023)
      Pine needle–derived biochars have been prepared and investigated as adsorbent materials for the removal of trivalent samarium (Sm(III)) from aqueous systems. The biochars, which were previously oxidized and magnetized), ...
    • Article  

      Role of P-containing species in phosphated CeO2 in the deterioration of its oxygen storage and release properties 

      López Granados, M.; Galisteo, F. C.; Lambrou, Panayiota S.; Mariscal, R.; Sanz, J.; Sobrados, I.; Fierro, José Luis García; Efstathiou, Angelos M. (2006)
      The chemical nature of P-containing species incorporated on the surface and within the subsurface regions of CeO2 solid and their effects on the deterioration of the oxygen storage and release properties of phosphated ceria ...
    • Article  

      Room temperature synthesis and high temperature frictional study of silver vanadate nanorods 

      Singh, D. P.; Polychronopoulou, K.; Rebholz, Claus; Aouadi, S. M. (2010)
      We report the room temperature (RT) synthesis of silver vanadate nanorods (consisting of mainly β-AgVO3) by a simple wet chemical route and their frictional study at high temperatures (HT). The sudden mixing of ammonium ...
    • Article  

      Study of the crystallization of nanoporous mixed metal oxide phases 

      Theocharis, Charis R.; Attipa, Christothea; Hapeshi, Evroula; Tillirou, Aphrodite A.; Kokkinofta, Rebecca I. (2008)
      A systematic study of the synthesis and characterization of pristine ceria and of mixed cerium/metal oxides has been undertaken. Various synthetic routes were explored, with the crystallization process being examined via ...
    • Doctoral Thesis  Open Access

      A technical approach to pottery production in Attica during the historic period : use of raw materials and processing techniques over time 

      Chaviara, Artemi I. (Πανεπιστήμιο Κύπρου, Φιλοσοφική Σχολή / University of Cyprus, Faculty of Letters, 2018-12)
      Η Διδακτορική Διατριβή αναφέρεται στο αρχαιολογικό ερώτημα σχετικά με τον εντοπισμό των αργιλικών πηγών, που χρησιμοποιήθηκαν για την παραγωγή της Αττικής Κεραμικής και συνάγει συμπεράσματα για την οργάνωση των εργαστηρίων ...
    • Article  

      Textured VN coatings with Ag3VO4 solid lubricant reservoirs 

      Luster, B.; Stone, D.; Singh, D. P.; Baben, M. to; Schneider, J. M.; Polychronopoulou, K.; Rebholz, Claus; Kohli, P.; Aouadi, S. M. (2011)
      Silver oxovanadate powders were produced using a low temperature hydrothermal synthesis method. X-ray diffraction (XRD) and Raman microscopy revealed the formation of the α-Ag3VO4 phase, and differential scanning calorimetry ...
    • Article  

      Thermoelectric properties of Mg2Si coatings deposited by pack cementation assisted process on heavily doped Si substrates 

      Stathokostopoulos, D.; Stefanaki, E. C.; Ioannou, M.; Polymeris, G. S.; Chaliampalias, D.; Pavlidou, E.; Kyratsi, Theodora; Paraskevopoulos, K. M.; Vourlias, G.; Hatzikraniotis, E. (2014)
      This work presents a study of structural and thermoelectric properties of Mg2Si coatings deposited on heavily doped p- and n-type Si substrates, at 650 C. The as-grown layers were smooth and uniform in thickness without ...
    • Article  

      Tribological properties of twin electron-beam evaporated Cr-N and Al-Cr-N coatings under laboratory sliding and drill experiments 

      Polychronopoulou, K.; Demas, N. G.; Rebholz, Claus; Polycarpou, A. A. (2008)
      The tribological behavior of substoichiometric Cr-N and Al-Cr-N coatings prepared by twin electron-beam evaporation at 450°C was studied. Al-Cr-N coatings with Al to Cr ratios in the range of 1-8 (and nitrogen concentrations ...
    • Master Thesis  Open Access

      Ανάκτηση Ουρανίου από Φωσφορικά και Ανθρακικά Ορυκτά/Πετρώματα 

      Μιχαήλ, Άντρια (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2023-02-15)
      Αντικείμενο της παρούσας Μεταπτυχιακής διατριβής αποτελεί η ανάκτηση του ουρανίου ασβεστολιθικά πετρώματα και ορυκτά και στόχος της παρούσας έρευνας ήταν η ανάπτυξη μιας μεθόδου η οποία θα χρησιμοποιεί φιλικούς προς το ...