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Ara es mostren els items 227-246 de 347

    • Partial oxidation of methane to syngas using Co/Mg and Co/Mg-Al oxide supported catalysts 

      Moral, A.; Reyero, I.; Llorca Piqué, Jordi; Bimbela, F.; Gandía, L. M. (2018-04-03)
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      Accés obert
      Partial oxidation of methane (POM) was studied over a series of Co/Mg-Al catalysts. Various commercial hydroxides with different Mg/Al ratios were used as precursors of the oxides employed as catalytic supports, as well ...

    • 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 ...

    • Pd/CeO2 catalysts prepared by solvent-free mechanochemical route for methane abatement in natural gas fueled vehicles 

      Danielis, Maila; Colussi, Sara; Llorca Piqué, Jordi; Trovarelli, Alessandro (American Chemical Society (ACS), 2021-03-15)
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      Accés obert
      The increasing diffusion of alternative mobility solutions, ranging from electric technologies to natural gas fueled vehicles (NGVs), has led to a progressive life-cycle analysis approach of their environmental impact in ...

    • Pd/TiO2-WO3 photocatalysts for hydrogen generation from water-methanol mixtures 

      Toledo Camacho, Sandra Yurani; Rey Barroso, Ana; Hernández Alonso, María Dolores; Llorca Piqué, Jordi; Medina Mena, Francisco; Contreras Iglesias, Sandra (2018-10-15)
      Article
      Accés obert
      Solar light is inexhaustible, and therefore to take advantage of this energy it is necessary to develop materials capable of absorbing energy in the widest range of the solar spectra. Although TiO2 is one of the most studied ...

    • Pd0.01Ru0.01Ce0.98O2-delta: A highly active and selective catalyst for the liquid phase hydrogenation of p-chloronitrobenzene under ambient conditions 

      Mistri, Rajib; Llorca Piqué, Jordi; Ray, Bidhan Chandra; Gayen, Arup (2013-09)
      Article
      Accés restringit per política de l'editorial
      Nanostructured bimetal ion substituted ceria, Pd0.01Ru0.01Ce0.98O2−ı (PdRuC2), prepared for the first time by a novel solution combustion synthesis and characterized employing XRD, BET, HRTEM and XPS has been shown to ...

    • Pd2Au36(SR)(24) cluster: structure studies 

      Zhang, Bei; Kaziz, Sameh; Llorca Piqué, Jordi (2015-01-01)
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      Accés obert
      The location of the Pd atoms in Pd2Au36(SC2H4Ph)(24), is studied both experimentally and theoretically. X-ray photoelectron spectroscopy (XPS) indicates oxidized Pd atoms. Palladium K-edge extended X-ray absorption ...

    • Pd2Sn [010] nanorods as a highly active and stable ethanol oxidation catalyst 

      Luo, Zhishan; Lu, jianmin; Flox Donoso, Cristina; Nafria Soler, Raquel; Genç, Aziz; Arbiol, Jordi; Llorca Piqué, Jordi; Ibañez, María; Morante, Joan Ramon; Cabot Codina, Andreu (Royal Society of Chemistry, 2016)
      Article
      Accés restringit per política de l'editorial
      The development of highly active, low cost and stable electrocatalysts for direct alcohol fuel cells remains a critical challenge. While Pd2Sn has been reported as an excellent catalyst for the ethanol oxidation reaction ...

    • PdCu alloy nanoparticles on alumina as selective catalysts for trichloroethylene hydrodechlorination to ethylene 

      Meshesha, B.T.; Barrabes, Noelia; Llorca Piqué, Jordi; Dafinov, Antonio; Medina, Francisco; Foettinger, Karin (2013-02-26)
      Article
      Accés restringit per política de l'editorial
      PdCu bimetallic catalysts supported on alumina were prepared by different common impregnation protocols and by a polyol nanoparticles synthesis route. These materials were studied in order to establish the relationship ...

    • PdO hydrate as an efficient and recyclable catalyst for the Suzuki-Miyaura reaction in water/ethanol at room temperature 

      Amoroso, Francesco; Colussi, Sara; Del Zotto, Alessandro; Llorca Piqué, Jordi; Trovarelli, Alessandro (2011-02-12)
      Article
      Accés restringit per política de l'editorial
      PdO·1.4H2O 1 prepared in our laboratories, as well as commercially available palladium oxides 2–4 have been found to act as efficient catalysts for the Suzuki–Miyaura reaction in ethanol/water mixture at room temperature ...

    • Performance comparison of Ni/TiO2 and Au/TiO2 photocatalysts for H2 production in different alcohol-water mixtures 

      Chen, Wan-Ting; Chan, Andrew; Sun-Waterhouse, Dongxiao; Llorca Piqué, Jordi; Idriss, Hicham; Waterhouse, Geoffrey I.N. (2018-11-01)
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      Accés obert
      This study systematically compares the performance of 0.5¿wt% Ni/P25 TiO2 and 2¿wt% Au/P25 TiO2 photocatalysts for H2 production in alcohol-water mixtures under UV excitation. HRTEM, XANES and EXAFS confirmed the presence ...

    • Phase engineering of defective copper selenide toward robust lithium-sulfur batteries 

      Yang, Dawei; Li, Mengyao; Zheng, Xuejiao; Han, Xu; Zhang, Chaoqi; Jacas Biendicho, Jordi; Llorca Piqué, Jordi; Wang, Jiaao; Hao, Hongchang; Li, Junshan; Henkelman, Graeme; Arbiol, Jordi; Morante, Joan Ramon; Mitlin, David; Chou, Shu-Lei; Cabot, Andreu (American Chemical Society, 2022-06-27)
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      Accés obert
      The shuttling of soluble lithium polysulfides (LiPS) and the sluggish Li–S conversion kinetics are two main barriers toward the practical application of lithium–sulfur batteries (LSBs). Herein, we propose the addition of ...

    • PHEV battery ageing study using voltage recovery and internal resistance from On-board data 

      Canals Casals, Lluc; Schiffer González, Adrián Miguel; Amante García, Beatriz; Llorca Piqué, Jordi (2015)
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      Accés obert
      It is well known that batteries do not perform equally the first day of use than some years later. Their properties are in constant degradation, their capacity fades and the maximum power reduces. Batteries ageing has ...

    • Phosphorous incorporation in Pd2Sn alloys for electrocatalytic ethanol oxidation 

      Yu, Xiaoting; Liu, Junfeng; Li, Junshan; Luo, Zhishan; Zuo, Yong; Xing, Congcong; Llorca Piqué, Jordi; Nasiou, Despina; Arbiol, Jordi; Cabot, Andreu (2020-11-01)
      Article
      Accés obert
      Direct ethanol fuel cells (DEFCs) show a huge potential to power future electric vehicles and portable electronics, but their deployment is currently limited by the unavailability of proper electrocatalysis for the ethanol ...

    • 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, ...

    • Photocatalytic hydrogen production from water-methanol and -glycerol mixtures using Pd/TiO2(-WO3) catalysts and validation in a solar pilot plant 

      Toledo Camacho, Sandra Yurani; Rey Barroso, Ana; Maldonado Rubio, M. Ignacio; Llorca Piqué, Jordi; Contreras Iglesias, Sandra; Medina Cabello, Francisco (2021-10-13)
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      Accés obert
      This paper is focused on the photocatalytic hydrogen production on Pd/TiO2(-WO3) catalysts from water-methanol and water-glycerol mixtures under UVA and solar irradiation. The photodeposition method for Pd was studied ...

    • Photocatalyzed hydrogen evolution from water by a composite catalyst of NH2-MIL-125(Ti) and surface nickel(II) species 

      Meyer, Kim; Bashir, Shahid; Llorca Piqué, Jordi; Idriss, Hicham; Ranocchiari, Marco; van Bokhoven, Jeroen A. (2016-09-01)
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      Accés obert
      A composite of the metal–organic framework (MOF) NH2-MIL-125(Ti) and molecular and ionic nickel(II) species, catalyzed hydrogen evolution from water under UV light. In 95 v/v¿% aqueous conditions the composite produced ...

    • Photodehydrogenation of ethanol over cu2o/tio2 heterostructures 

      Xing, Congcong; Zhang, Yu; Liu, Yongpeng; Wang, Xiang; Li, Junshan; Spadaro, Maria Chiara; Guardia, Pablo; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot, Andreu (2021-05-25)
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      Accés obert
      The photodehydrogenation of ethanol is a sustainable and potentially cost-effective strategy to produce hydrogen and acetaldehyde from renewable resources. The optimization of this process requires the use of highly active, ...

    • Photoproduction of hydrogen in microreactors: catalytic coating or slurry configuration? 

      Chausse Calbet, Victor; Llorca Piqué, Jordi (2020-01-01)
      Article
      Accés obert
      A quartz microreactor containing 28 microchannels of 500 µm width and 105 mm length has been used to photoproduce hydrogen from liquid water-ethanol using an Au/TiO2 photocatalyst and UV light. The photomicroreactor has ...

    • Plasma functionalized surface of commodity polymers for dopamine detection 

      Fabregat Jové, Georgina; Osorio Madrigal, Joaquin; Castedo Rodríguez, Alejandra; Armelín Diggroc, Elaine Aparecida; Buendía Morales, Jorge Juan; Llorca Piqué, Jordi; Alemán Llansó, Carlos (2017-03-31)
      Article
      Accés obert
      We have fabricated potentially generalizable sensors based on polymeric-modified electrodes for the electrochemical detection of dopamine. Sensitive and selective sensors have been successfully obtained by applying a ...

    • Plasma surface modification of polymers for sensor applications 

      Alemán Llansó, Carlos; Fabregat Jové, Georgina; Armelín Diggroc, Elaine Aparecida; Buendía Morales, Jorge Juan; Llorca Piqué, Jordi (Royal Society of Chemistry (RSC), 2018-09-07)
      Article
      Accés obert
      Polymeric sensors play an increasingly important role in monitoring the environment we live in, providing relevant information for a host of applications. Among them, significant efforts have been made to fabricate polymeric ...