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Aproximadamente 18 registro(s) hasta el momento: (journal)

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Recurso libre

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

Characterization of a carbon felt electrode: structural and physical properties
González García, José - Bonete Ferrández, Pedro - Expósito Rodríguez, Eduardo - Montiel Leguey, Vicente - Aldaz Riera, Antonio - Torregrosa Maciá, Rosa

Formato:	info:eu-repo/semantics/article
Enlaces:	The aim of this paper is the characterization of a carbon felt (Le Carbone Lorraine, RVC 4002) to be used as three-dimensional electrode. A wide group of very different techniques were used in the physical and structural characterization of this…
Fecha:	2008-11-03
Recurso:	RUA Docencia

Recurso libre

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

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

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

Kinetics of electrocrystallization of PbO2 on glassy carbon electrodes: influence of ultrasound
González García, José - Gallud Martínez, Francisco - Iniesta Valcárcel, Jesús - Montiel Leguey, Vicente - Aldaz Riera, Antonio - Lasia, Andrzej

Formato:	info:eu-repo/semantics/article
Enlaces:	Electrocrystallisation of lead dioxide on glassy carbon electrodes was studied in 1 M HNO3+ 0.1 M Pb(NO3)2 in the presence of ultrasound using chronoamperometry and scanning electron microscopy. In order to compare these results with those obtained in the absence…
Fecha:	2008-11-05
Recurso:	RUA Docencia

Recurso libre

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

Application of recent double-hybrid density functionals to low-lying singlet-singlet excitation energies of large organic compounds
Di Meo, Florent - Trouillas, Patrick - Adamo, Carlo - Sancho García, Juan Carlos

Formato:	info:eu-repo/semantics/article
Enlaces:	The present work assesses some recently developed double-hybrid density functionals (B2π-PLYP, PBE0-DH, and PBE0-2) using linear-response Tamm-Dancoff Time-Dependent Density Functional Theory. This assessment is achieved against experimentally derived low-lying excitation energies of large organic dyes of recent interest, including some…
Fecha:	2013-11-12
Recurso:	RUA Docencia

Recurso libre

10.

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

11.

Recovery by means of electrodialysis of an aromatic amino acid from a solution with a high concentration of sulphates and phosphates
Montiel Leguey, Vicente - García García, Vicente - González García, José - Carmona, F. - Aldaz Riera, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	In the industrial obtention of D-a-p-hydroxyphenylglycine the separation of the amino acid is carried out by precipitation and during this process, a mother liquor is produced with a high salt content (phosphates and sulphates) and an amino acid concentration of…
Fecha:	2008-11-04
Recurso:	RUA Docencia

Recurso libre

12.

Kinetics of electrocrystallization of PbO2 on glassy carbon electrodes: partial inhibition of the progressive three-dimensional nucleation and growth
González García, José - Gallud Martínez, Francisco - Iniesta Valcárcel, Jesús - Montiel Leguey, Vicente - Aldaz Riera, Antonio - Lasia, Andrzej

Formato:	info:eu-repo/semantics/article
Enlaces:	Electrocrystallization of PbO2 on glassy carbon electrodes was studied in 1 M HNO3 + 0.1 M Pb(NO3)2 using cyclic voltammetry rotating disk electrode experiments, chronoamperometry, and scanning electron microscopy. In order to explain the experimental curves, a new theory of…
Fecha:	2008-11-05
Recurso:	RUA Docencia

Recurso libre

13.

Effects of ultrasound on the electrodeposition of lead dioxide on glassy carbon electrodes
González García, José - Iniesta Valcárcel, Jesús - Aldaz Riera, Antonio - Montiel Leguey, Vicente

Formato:	info:eu-repo/semantics/article
Enlaces:	The electrodeposition of lead dioxide from lead(II) nitrate in an acid medium has been used as a test reaction to study the effects of an ultrasound field. The different behaviours found between platinum and glassy carbon electrodes have been compared…
Fecha:	2008-11-04
Recurso:	RUA Docencia

Recurso libre

14.

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

15.

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

16.

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

17.

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

18.

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