Ara es mostren els items 1-12 de 244

    • A high conductivity 1D p–d conjugated metal–organic framework with efficient polysulfide trapping-diffusion-catalysis in lithium–sulfur batteries 

      Yang, Dawei; Liang, Zhifu; Tang, Pengyi; Zhang, Chaoqi; Tang, Mingxue; Li, Qizhen; Jacas Biendicho, Jordi; Li, Junshan; Heggen, Marc; Dunin-Borkowski, Rafal E.; Xu, Ming; Llorca Piqué, Jordi; Arbiol Cobos, Jordi; Morante, Joan Ramon; Chou, Shu-Lei; Cabot, Andreu (John Wiley & sons, 2022-03-10)
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      Accés obert
      The shuttling behavior and sluggish conversion kinetics of the intermediate lithium polysulfides (LiPS) represent the main obstructions to the practical application of lithium–sulfur batteries (LSBs). Herein, a 1D p–d ...
    • Optimization of the sintering thermal treatment and the ceramic ink used in direct ink writing of a-Al2O3: Characterization and catalytic application 

      Álvarez Maté, Ferran; Cifuentes López, Alejandro; Serrano Carreño, M. Isabel; Franco García, María Lourdes; Fargas Ribas, Gemma; Fenollosa i Artés, Felip; Uceda Molera, Roger; Llanes Pitarch, Luis Miguel; Tardivat, C; Llorca Piqué, Jordi; Roa Rovira, Joan Josep (Elsevier, 2022-06-01)
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      Accés restringit per política de l'editorial
      Unlike other engineered ceramic products, alumina (Al2O3) displays interesting mechanical and physical properties, which makes it an ideal candidate for a wide range of uses in different fields and in particular for catalytic ...
    • Methanol steam reforming over PdZn/ZnAl2O4/Al2O3 in a catalytic membrane reactor: An experimental and modelling study 

      Cifuentes López, Alejandro; Soler Turu, Lluís; Torres Cámara, Ricardo; Llorca Piqué, Jordi (2022-03-11)
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      Accés obert
      A catalytic membrane reactor equipped with Pd–Ag metallic membranes and loaded with PdZn/ZnAl2O4/Al2O3 catalytic pellets was tested for the methanol steam reforming reaction (S/C = 1) aimed at producing a pure hydrogen ...
    • Enhanced photoproduction of hydrogen on Pd/TiO2 prepared by mechanochemistry 

      Chen, Yufen; Soler Turu, Lluís; Armengol Profitós, Marina; Xie, Chenyang; Crespo Artiaga, Daniel; Llorca Piqué, Jordi (Elsevier, 2022-07-15)
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      Accés obert
      Supported metal clusters are considered as promising cocatalysts in heterogeneous photocatalysis due to their singular geometric structures and unique reactivity. Nevertheless, to explore efficient synthetic routes that ...
    • Au/TiO2 2D-photonic crystals as UV–visible photocatalysts for H2 production 

      Torras, Miquel; Molet, Pau; Soler Turu, Lluís; Llorca Piqué, Jordi; Roig, Anna; Mihi, Agustin (2022-02-10)
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      Accés obert
      Noble metal decoration of wideband gap semiconductors enables the excitation of surface plasmons in the visible range that upon relaxation generate hot carriers used for catalysis. However, this strategy leads to photocatalytic ...
    • Ultradispersed Mo/TiO2 catalysts for CO2 hydrogenation to methanol 

      Pérez Dieste, Virginia; Llorca Piqué, Jordi; Puzenat, Eric; Afanasiev, Pavel; Morfin, Franck; Piccolo, Laurent (Royal Society of Chemistry (RSC), 2021-09-21)
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      Accés obert
      Mo/TiO2 catalysts with atomic dispersion of molybdenum appear active and stable in the gas-phase hydrogenation of CO2. A comparison between various titania materials shows a crucial effect of the support surface structure ...
    • Preparation of SBA-15 and Zr-SBA-15 materials by direct-synthesis and pH-adjustment methods 

      Chimentäo, Ricardo José; Peixoto, Agnes; Llorca Piqué, Jordi (2021-10-15)
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      Accés obert
      SBA-15 mesoporous silica materials with zirconium atoms incorporated into its structure were prepared by two methods: direct-synthesis and pH-adjustment. Two nominal ratios of Zr/Si = 0 and 0.10 were evaluated. N2-physisorption, ...
    • Ligand conversion in nanocrystal synthesis: the oxidation of alkylamines to fatty acids by nitrate 

      Calcabrini, Mariano; Miquel Ribot, Sebastià; Llorca Piqué, Jordi (American Chemical Society (ACS), 2021-11-22)
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      Accés obert
      Ligands are a fundamental part of nanocrystals. They control and direct nanocrystal syntheses and provide colloidal stability. Bound ligands also affect the nanocrystals’ chemical reactivity and electronic structure. Surface ...
    • Catalytic ammonia decomposition over Ni-Ru supported on CeO2 for hydrogen production: Effect of metal loading and kinetic analysis 

      Lucentini, Ilaria; García Colli, Germán; Luzi, Carlos Daniel; Serrano Carreño, M. Isabel; Martínez, Osvaldo Miguel; Llorca Piqué, Jordi (Elsevier, 2021-06-05)
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      Accés obert
      Ceria-supported Ni-Ru bimetallic catalysts with different metal loadings have been prepared by co-impregnation, characterized and tested in the production of hydrogen from the catalytic decomposition of ammonia. The ...
    • PbS-Pb-Cu xS Composites for Thermoelectric Application 

      Li, Mengyao; Liu, Yu; Zhang, Yu; Han, Xu; Xiao, Ke; Nabahat, Mehran; Arbiol, Jordi; Llorca Piqué, Jordi; Alzate Ibáñez, Angélica María; Cabot, Andreu (2021-10-19)
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      Accés obert
      Composite materials offer numerous advantages in a wide range of applications, including thermoelectrics. Here, semiconductor-metal composites are produced by just blending nanoparticles of a sulfide semiconductor obtained ...
    • The importance of surface adsorbates in solution-processed thermoelectric materials: the case of SnSe 

      Liu, Yu; Calcabrini, Mariano; Yu, Yuan; Genç, Aziz; Chang, Cheng; Costanzo, Tommaso; Kleinhanns, Tobias; Lee, Seungho; Llorca Piqué, Jordi; Cojocaru-Mirédin, Oana; Ibánez, María (John Wiley & sons, 2021-12-29)
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      Accés obert
      Solution synthesis of particles emerges as an alternative to prepare thermoelectric materials with less demanding processing conditions than conventional solid-state synthetic methods. However, solution synthesis generally ...
    • Photocatalytic hydrogen production from alcohol aqueous solutions over TiO2-activated carbon composites decorated with Au and Pt 

      Serafin, Jaroslaw; Ouzzine, Mohammed; Srensce-Nazzal, Joanna; Llorca Piqué, Jordi (2022-03)
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      Accés obert
      Nanocomposites based on titanium dioxide loaded with metal nanoparticles (Au and Pt) and activated carbon were synthesized and tested for hydrogen photogeneration in the gas phase using a mixture of alcohol-water (methanol, ...