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Aproximadamente 19 registro(s) hasta el momento: (journal)

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Recurso libre

Synthesis and characterization of electroactive films deposited from aniline dimers
Cotarelo Méndez, María de los Ángeles - Huerta Arráez, Francisco - Quijada Tomás, César - Mallavia Marín, Ricardo - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical oxidation of the aniline dimers 2-aminodiphenylamine (2-adpa) and 4-aminodiphenylamine (4-adpa) has been performed in strongly acidic medium on platinum, graphite, and indium tin oxide electrodes. The resulting films have been characterized by a number of electrochemical, microscopic, and…
Fecha:	2007-11-21
Recurso:	RUA Docencia

Recurso libre

Electrochemical regeneration of activated carbon saturated with toluene
García Otón, Miguel - Montilla Jiménez, Francisco - Lillo Ródenas, María Ángeles - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical regeneration of an activated carbon, previously saturated with toluene by gas phase adsorption, was studied. Cathodic and anodic regeneration methods were analyzed using a small batch electrochemical cell. In both cases, a stripping efﬁciency close to 100% was…
Fecha:	2007-10-29
Recurso:	RUA Docencia

Recurso libre

Electrochemical behaviour of conducting polymers obtained into clay-catalyst layers: an in situ Raman spectroscopy study
Boutaleb, Nadia - Benyoucef, Abdelghani - Salavagione, Horacio Javier - Belbachir, Mohammed - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	In this paper we present the study of the electrochemical properties of the following conducting polymers: poly(o-anisidine), polyaniline and copolymers of aniline and o-anisidine obtained by a new synthetic method. The polymers are synthesized in free-of-acid conditions, using an activated…
Fecha:	2007-10-26
Recurso:	RUA Docencia

Recurso libre

Synthesis and in situ FTIRS characterization of conducting polymers obtained from aminobenzoic acid isomers at platinum electrodes
Benyoucef, Abdelghani - Huerta Arráez, Francisco - Vázquez Picó, José Luis - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical homo-polymerization of o-, m- and p-aminobenzoic acids has been performed on Pt electrodes in perchloric acid aqueous medium by cyclic scanning of the potential. Diﬀerent limit potentials were employed to obtain thin polymeric ﬁlms. When the switching potential…
Fecha:	2007-10-28
Recurso:	RUA Docencia

Recurso libre

Effect of the intercalated cation on the properties of poly(o-methylaniline)/maghnite clay nanocomposites
Salavagione, Horacio Javier - Cazorla Amorós, Diego - Tidjane, Selma - Belbachir, Mohammed - Benyoucef, Abdelghani - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	A detailed study about the synthesis, characterization and properties of poly(o-methylaniline)(PoMea)/maghnite nanocomposites has been performed. Changes in the characteristics of the nanocomposites, depending on the intercalated cation between the clay layers before the synthesis, have been observed. Intercalated morphology has…
Fecha:	2008-09-30
Recurso:	RUA Docencia

Recurso libre

Voltammetric and in situ FTIRS study of the electropolymerization of o-aminobenzoic acid at gold and graphite carbon electrodes: influence of pH on the electrochemical behaviour of polymer films
Benyoucef, Abdelghani - Huerta Arráez, Francisco - Ferrahi, Mohammed Issam - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical homopolymerization of o-aminobenzoic acid has been performed on both gold and graphite surfaces in perchloric acid aqueous medium by cyclic scanning of the potential. Electroactive polymeric materials are formed in all cases but the amount of electropolymerization products…
Fecha:	2009-05-19
Recurso:	RUA Docencia

Recurso libre

Spectroscopic and electrochemical study of the redox process of poly(2,2'-dithiodianiline)
Cotarelo Méndez, María de los Ángeles - Huerta Arráez, Francisco - Quijada Tomás, César - Pérez Martínez, José María - Valle de la Cortina, María Angélica del - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The redox process undergone by the electrochemically synthesized poly(2,2-dithiodianiline), poly(DTDA), has been examined in acetonitrile-water mixtures by electrochemical and spectroscopic techniques. The spectroscopic properties of this material are equivalent to those exhibited by the chemically synthesized one. The polymeric structure…
Fecha:	2007-10-26
Recurso:	RUA Docencia

Recurso libre

Evaluation of the electrocatalytic activity of antimony-doped tin dioxide anodes toward the oxidation of phenol in aqueous solutions
Montilla Jiménez, Francisco - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	Antimony-doped tin dioxide electrodes supported on titanium have been used in the electrochemical treatment of aqueous solution containing phenol. Ti/SnO2–Sb anode has high efficiency in the elimination of phenol, but its use is hindered by its short service life. The…
Fecha:	2007-11-21
Recurso:	RUA Docencia

Recurso libre

Study of the chemical copolymerization of 2-aminoterephthalic acid and aniline. Synthesis and copolymer properties
Arias Pardilla, Joaquín - Salavagione, Horacio Javier - Barbero, César Alfredo - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	Aniline (ANI) and 2-aminoterephthalic acid (2ATA) copolymers, with diﬀerent compositions, were prepared by chemical oxidative polymerization varying the feed ratio. The new materials have been characterized by techniques such as XPS, FTIR, Raman spectroscopies and thermal analysis. It has been…
Fecha:	2007-10-26
Recurso:	RUA Docencia

Recurso libre

10.

Adsorbed cyanide reactions at the Pt(100) surface
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	In contrast to what is observed in alkaline media, cyanide adlayers formed on Pt(100) are very reactive in 0.1 M HClO4 solutions. In this medium, dissimilar behaviour has been observed for the potential regions above and below 0.4 V (RHE).…
Fecha:	2007-11-02
Recurso:	RUA Docencia

Recurso libre

11.

Pt/carbon nanofibers electrocatalysts for fuel cells: effect of the support oxidizing treatment
Zaragoza Martín, Francisco - Sopeña Escario, Daniel - Morallón Núñez, Emilia - Salinas Martínez de Lecea, Concepción

Formato:	info:eu-repo/semantics/article
Enlaces:	Different Pt-based electrocatalysts supported on carbon nanofibers and carbon black (Vulcan XC-72R) have been prepared using a polymermediated synthesis. The electrocatalysts have been characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and cyclic voltammetry. The effect of carbon nanofibers…
Fecha:	2008-09-22
Recurso:	RUA Docencia

Recurso libre

12.

Study of redox mechanism of poly(o-aminophenol) using in situ techniques: evidence of two redox processes
Salavagione, Horacio Javier - Arias Pardilla, Joaquín - Pérez Martínez, José María - Vázquez Picó, José Luis - Morallón Núñez, Emilia - Miras, María Cristina - Barbero, César Alfredo

Formato:	info:eu-repo/semantics/article
Enlaces:	The poly(o-aminophenol) (POAP) redox process has been studied in aqueous acid solution using spectroscopic and optic in situ techniques. The redox transition of the POAP from its completely oxidized state to its completely reduced state occurs through two consecutive reactions…
Fecha:	2007-10-29
Recurso:	RUA Docencia

Recurso libre

13.

Potential modulated reflectance study of the electrooxidation of simple amino acids on Pt(111) in acidic media
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Quijada Tomás, César - Vázquez Picó, José Luis - Berlouis, L.E.A.

Formato:	info:eu-repo/semantics/article
Enlaces:	The electroreflectance (ER) technique has been applied to the study of the electrooxidation of some simple amino acids (glycine, serine and alanine) on a Pt(111) surface in acid medium. A different behaviour in the (1:R)(#R:#E) response as a function of
Fecha:	2007-11-02
Recurso:	RUA Docencia

Recurso libre

14.

Friendly conditions-synthesis of platinum nanoparticles supported on conducting polymer: methanol electrooxidation
Salavagione, Horacio Javier - Sanchis Bermúdez, Carlos - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	An easy method to synthesize Pt nanoparticles supported on conductive polymers has been explored. The synthesis was carried out under “soft” conditions, i.e., at low temperatures and without using strong reducing agent. The optimal synthesis conditions have been established. Thus,…
Fecha:	2010-10-27
Recurso:	RUA Docencia

Recurso libre

15.

Ferrocenium strong adsorption on sulfonated polyaniline modified electrodes
Sanchis Bermúdez, Carlos - Salavagione, Horacio Javier - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrocatalytic oxidation of ferrocene (Fc) at neutral pH in aqueous solution has been studied over thin films of electroactive sulfonated polyaniline (SPAN) by cyclic voltammetry. Strong adsorption of the oxidised species (ferrocenium ion) on the polymer arises as the…
Fecha:	2009-05-19
Recurso:	RUA Docencia

Recurso libre

16.

The effects of manifold flow on mass transport in electrochemical filter-press reactors
Frías Ferrer, Ángel - González García, José - Sáez Bernal, Verónica - Ponce de León Albarrán, Carlos - Walsh, Frank C.

Formato:	info:eu-repo/semantics/article
Enlaces:	The mass transport rates to planar electrodes, in a series of electrochemical laboratory filter-press reactors were measured to quantify the effects of the inlet and outlet design manifolds on the fluid flow. In small reactors, entrance/exit effects are especially important…
Fecha:	2008-11-05
Recurso:	RUA Docencia

Recurso libre

17.

Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers
Domínguez Domínguez, Sonia - Arias Pardilla, Joaquín - Berenguer Murcia, Ángel - Morallón Núñez, Emilia - Cazorla Amorós, Diego

Formato:	info:eu-repo/semantics/article
Enlaces:	Electrodeposition of Pt nanoparticles under potentiostatic conditions was performed on several types of carbon electrode supports: commercial macroporous carbon (a three-dimensional electrode), glassy carbon and graphite. Conducting polymers (poly-aniline and poly-oaminophenol) were also used. The platinum nanoparticles were obtained by…
Fecha:	2009-04-28
Recurso:	RUA Docencia

Recurso libre

18.

Spectroelectrochemical study of the oxidation of aminophenols on platinum electrode in acid medium
Salavagione, Horacio Javier - Arias Pardilla, Joaquín - Garcés Terradillos, Pedro - Morallón Núñez, Emilia - Barbero, César Alfredo - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical oxidation of para-, meta- and ortho-aminophenols was carried out using a platinum electrode in aqueous acid medium. The spectroscopic results indicate that p-aminophenol suﬀers hydrolysis giving the formation of hydroquinone/p-benzoquinone. CO2 has been detected by in situ FTIR…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

19.

Voltammetric and in situ FTIRS study of the electrochemical oxidation of aniline from aqueous solutions buffered at pH 5
Cases Iborra, Francisco Javier - Huerta Arráez, Francisco - Garcés Terradillos, Pedro - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical oxidation of aniline at low concentration was carried out in phosphate buffer solutions of pH 5. Both electrochemical and spectroscopic results indicate that during the initial stages of aniline oxidation, a dimerisation process takes place. The dimer has…
Fecha:	2008-09-25
Recurso:	RUA Docencia