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

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Recurso libre

Electrochemical behaviour of amino acids on Pt(hkl): a voltammetric and in situ FTIR study. Part III. Glycine on Pt(100) and Pt(110)
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Vázquez Picó, José Luis - Pérez Martínez, Juan Manuel - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical behaviour of glycine on well-defined Pt(100) and Pt(110) electrodes has been studied in an acid medium by means of cyclic voltammetry and in situ FTIR spectroscopy. The results presented in this paper and those reported previously for the…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

Electrochemical methods to enhance the capacitance in activated carbon/polyaniline composites
Bleda Martínez, María Jesús - Peng, Chuang - Zhang, Shenguen - Chen, George Z. - Morallón Núñez, Emilia - Cazorla Amorós, Diego

Formato:	info:eu-repo/semantics/article
Enlaces:	Activated carbon/polyaniline composites have been prepared using different electrochemical methods: single-step potentiostatic polymerization, multiple-step potentiostatic polymerization, and potentiodynamic polymerization with the anodic potential limits being fixed at either 0.75 or 1 V (vs Ag/AgCl). The prepared composite samples were characterized…
Fecha:	2009-05-19
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

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

Voltammetric and in situ FTIRS study on CN- and Au(CN)-x complexes at the polycrystalline gold surface in citrate medium
Huerta Arráez, Francisco - Mele, Claudio - Bozzini, Benedetto - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	The adsorption and reactivity of citrate anions, cyanide anions, and the Au(I) and Au(III) cyanocomplexes (KAu(CN)2 and KAu(CN)4, respectively) on gold polycrystalline electrodes have been investigated by means of cyclic voltammetry and in situ FTIR spectroscopy in pH 7 sodium…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

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

Conducting films obtained by electro-oxidation of p-aminodiphenylamine (ADPA) in the presence of aniline in buffer aqueous solution at pH 5
Cases Iborra, Francisco Javier - Huerta Arráez, Francisco - Lapuente Aragó, Rocío - Quijada Tomás, César - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical oxidation of aniline and p-aminodiphenylamine (ADPA) was carried out in a phosphate buffer solution at pH 5. Cyclic voltammetry and ‘‘in situ’’ FTIR spectroscopy were combined to study the redox behavior of the oxidation products. When ADPA is…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

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

Recurso libre

Electrochemical behaviour of amino acids on Pt(hkl): a voltammetric and in situ FTIR study. Part IV. Serine and alanine on Pt(100) and Pt(110)
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Vázquez Picó, José Luis - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrochemical oxidation of serine and alanine was performed at Pt(100) and Pt(110) electrodes and analysed by means of FTIR spectroscopy and cyclic voltammetry. The open circuit adsorption of both amino acids was also investigated. The oxidation of serine gives…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

10.

Oxidation of methylamine and ethylamine on Pt single crystal electrodes in acid medium
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Pérez Martínez, Juan Manuel - Vázquez Picó, José Luis - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	Cyclic voltammetry (CV) and Fourier transform infrared reflection-absorption spectroscopy (FT-IRRAS) have been combined to analyse the oxidation of methylamine and ethylamine on platinum single crystal electrodes in an acidic medium. The oxidation of both amines on Pt(hkl) electrodes gives rise…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

11.

The adsorption of methylamine on Pt single crystal surfaces
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Quijada Tomás, César - Vázquez Picó, José Luis - Pérez Martínez, Juan Manuel - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	The irreversible adsorption of methylamine at platinum single-crystal electrodes has been studied by a combination of electrochemical and in situ spectroscopic techniques. From purely electrochemical data, it has been stated that the adsorption of CH3NH2 molecules results in significant alteration…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

12.

Potential modulated reflectance spectroscopy of Pt(111) in acidic and alkaline media: cyanide adsorption
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 a Pt(111) electrode in different acidic and alkaline electrolytes. The variation in the normalised potential derivative of the reflectance signal, 1/R(dR/dE) is observed in sulphuric and perchloric acid media…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

13.

A voltammetric and FTIR–ATR study of the electropolymerization of phenol on platinum electrodes in carbonate medium Influence of sulfide
Lapuente Aragó, Rocío - Cases Iborra, Francisco Javier - Garcés Terradillos, Pedro - Morallón Núñez, Emilia - Vázquez Picó, José Luis

Formato:	info:eu-repo/semantics/article
Enlaces:	Voltammetry and FTIR–ATR techniques have been employed to investigate polyphenol films formed on platinum surfaces by electrochemical oxidation of phenol. The media used in the electropolymerization were aqueous carbonate solutions, with and without Na2S. The polymeric films created are not…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

14.

Electrochemical behaviour of amino acids on Pt(h,k,l): a voltammetric and in situ FTIR study. Part 1. Glycine on Pt(111)
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Cases Iborra, Francisco Javier - Rodes García, Antonio - Vázquez Picó, José Luis - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	A spectroelectrochemical study of the adsorption and oxidation of glycine on a Pt(111) electrode has been carried out in 0.1 M HClO4 solution. Two types of adsorbate were identified. On the one hand, strongly adsorbed cyanide which comes from the…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

15.

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

16.

Electrochemical behaviour of amino acids on Pt(h, k, l): a voltammetric and in situ FTIR study. Part II. Serine and alanine on Pt(111)
Huerta Arráez, Francisco - Morallón Núñez, Emilia - Cases Iborra, Francisco Javier - Rodes García, Antonio - Vázquez Picó, José Luis - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	A spectroelectrochemical study of the adsorption and oxidation of serine and alanine on Pt(111) electrodes has been carried out in 0.1 M HClO4 solutions. From the voltammetric and FTIR spectroscopic results, we concluded that adsorbed cyanide is formed at the…
Fecha:	2008-09-25
Recurso:	RUA Docencia

Recurso libre

17.

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

18.

Redox flow cells for energy conversion
Ponce de León Albarrán, Carlos - Frías Ferrer, Ángel - González García, José - Szánto, D.A. - Walsh, Frank C.

Formato:	info:eu-repo/semantics/article
Enlaces:	Energy storage technologies provide an alternative solution to the problem of balancing power generation and power consumption. Redox flow cells are designed to convert and store electrical energy into chemical energy and release it in a controlled fashion when required.…
Fecha:	2008-11-06
Recurso:	RUA Docencia

Recurso libre

19.

Cyanide and phenol oxidation on nanostructured Co3O4 electrodes prepared by different methods
Berenguer Betrián, Raúl - Valdés-Solís Iglesias, Teresa - Fuertes Arias, Antonio Benito - Quijada Tomás, César - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	Nanostructured cobalt oxide (Co3O4) electrodes were prepared by two different methods. The first one involved the synthesis of Co3O4 nanoparticles through a nanocasting route using commercial silica gel as a sacrificial template, and in the second one, the Co3O4 electrodes…
Fecha:	2009-04-28
Recurso:	RUA Docencia