Now showing items 1-6 of 6

    • Direct growth of hydrotalcite nanolayers on carbon fibers by electrospinning 

      Modesto Lopez, Luis B; Chimentao, Ricardo J; Alvarez, Mayra G; Rosell Llompart, Joan; Medina Cabello, Francisco; Llorca Piqué, Jordi (2014-11-01)
      Article
      Restricted access - publisher's policy
      Hydrotalcite (HT) nanolayers have been grown directly on carbon fibers by carbonization and subsequent hydration of electrospun PVA/PEO/MgAl-nitrate fibers. The growth of the layered material was ascertained by X-ray ...
    • Enhanced photocatalytic degradation of methylene blue: Preparation of TiO2/reduced graphene oxide nanocomposites by direct sol-gel and hydrothermal methods 

      Atout, H.; Alvarez, Mayra G; Chebli, D.; Bouguettoucha, A.; Tichit, Didier; Llorca Piqué, Jordi; Medina Cabello, Francisco (2017-11)
      Article
      Open Access
      In this study, two different preparation methods of titanium dioxide nanoparticles/reduced graphene oxide nanocomposites were investigated using direct sol-gel method followed by hydrothermal treatment or simple hydrothermal ...
    • Heterogeneous Fenton-like oxidation of p-hydroxybenzoic acid using Fe/CeO2-TiO2 catalyst 

      Hammedi, Tijani; Triki, Mohamed; Alvarez, Mayra G; Llorca Piqué, Jordi; Ghorbel, Abdelhamid; Ksibi, Zouhaier; Medina Mena, Francisco (2019-04-01)
      Article
      Open Access
      This paper is built on the Fenton-like oxidation of p-hydroxybenzoic acid (p–HBZ) in the presence of H2O2 and 3%Fe supported on CeO2-TiO2 aerogels under mild conditions. These catalysts were deeply characterized by X-ray ...
    • Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts 

      Alvarez, Mayra G; Tichit, Didier; Medina Cabello, Francesc; Llorca Piqué, Jordi (2017-02-28)
      Article
      Open Access
      Layered double hydroxides (LDH or HT) or their derived mixed oxides present marked acid-base properties useful in catalysis, but they lead to agglomerate inducing a weak accessibility to the active sites. In this study we ...
    • Synthesis of tungsten carbide on Al-SBA-15 mesoporous materials by carburization 

      Alvarez, Mayra G; Chimentao, Ricardo J; Tichit, D.; Santos, Jeannette B O; Dafinov, Antonio; Modesto Lopez, Luis B; Rosell Llompart, Joan; Gueell, E. J.; Gispert Guirado, Francesc; Llorca Piqué, Jordi; Medina Mena, Francisco (2016-01-01)
      Article
      Open Access
      Aluminum was incorporated into SBA-15 supports at molar ratios Si/Al = 10 and 2 by the pH-adjusting method. The calcined mesoporous Al-SBA-15 supports, as well as the Al-free SBA-15 support, were impregnated with ammonium ...
    • Total degradation of p-hydroxybenzoic acid by Ru-catalysed wet air oxidation: a model for wastewater treatment 

      Hammedi, Tijani; Triki, Mohamed; Alvarez, Mayra G; Chimentao, Ricardo J; Ksibi, Zouhaier; Ghorbel, Abdelhamid; Llorca Piqué, Jordi; Medina Mena, Francisco (2015-12-01)
      Article
      Open Access
      Catalytic wet air oxidation using heterogeneous catalysts is a promising technology for treatment of wastewaters. Wastewaters from olive oil mills are difficult to clean because effluents contain high levels of phenolic ...