Improving the Photoelectrochemical Response of TiO2 Nanotubes upon Decoration with Quantum-Sized Anatase Nanowires

TiO2 nanotubes (NTs) have been widely used for a number of applications including solar cells, photo(electro)chromic devices, and photocatalysis. Their quasi-one-dimensional morphology has the advantage of a fast electron transport although they have a relatively reduced interfacial area compared with nanoparticulate films. In this study, vertically oriented, smooth TiO2 NT arrays fabricated by anodization are decorated with ultrathin anatase nanowires (NWs). This facile modification, performed by chemical bath deposition, allows to create an advantageous self-organized structure that exhibits remarkable properties. On one hand, the huge increase in the electroactive interfacial area induces an improvement by 1 order of magnitude in the charge accumulation capacity. On the other hand, the modified NT arrays display larger photocurrents for water and oxalic acid oxidation than bare NTs. Their particular morphology enables a fast transfer of photogenerated holes but also efficient mass and electron transport. The importance of a proper band energy alignment for electron transfer from the NWs to the NTs is evidenced by comparing the behavior of these electrodes with that of NTs modified with rutile NWs. The NT-NW self-organized architecture allows for a precise design and control of the interfacial surface area, providing a material with particularly attractive properties for the applications mentioned above.

Recensiones

Contiene: BALAGNA, JOS��E, L'Imprimerie arabe en Occident (XVIe, XVIIe et XVIIIe siécles). París, Maisonneuve et Larose. 1984, 153 pp. 21 cm. Islam et Occident, II / Manuela Marín ; MIQUEL BARCELÓ Y OTROS, Historia de los pueblos de España, vol. 2, «Los antiguos territorios de la Corona de Aragón. Aragón, Baleares, Cataluña, País Valenciano». Argos Vergara, Barcelona, 1984, 499 pp. / Míkel de Epalza ; NURI MUcAMMAR, Muhammad b. Waddab al-Qurtubi, mu'assis madrasat al-hadit bi-l-Andalus maCa Baqi b. Majlad Rabat: Dar al-MaCarif, 1403/1983, 480 pp., 24 cm. / María Isabel Fierro.

Longleat House MS 257: a description

From fresh examination of the manuscript, this paper presents a codicological description of Longleat House MS 257, a fifteenth-century codex in vellum that contains Lydgate’s Siege of Thebes, Chaucer’s Knight’s and Clerk’s Tale, and Ipomedon C, among other texts. First, the article discusses the date and place of production of this textual artifact, and after listing the contents of the volume, it examines the manuscript’s material circumstances, provides the collation and compilation, describes the morphology of the hands, and analyzes the decoration.

Traduction et terminologie. A propos de deux versions espagnoles (Madrid, 1800) de la Logique de Dumarsais

Cette étude qui relève du domaine de la traduction philosophique (lato sensu) a pour objet deux versions de la Logique de Dumarsais ([1769]1797) éditées en Espagne (1800). Nous montrons que ces deux Lógicas, oeuvres de deux traducteurs différents, qui eurent chacun des fins également différentes, comme le prouvent le contexte bibliographique et les métatextes respectifs, manifestent la présence d’une terminologie espagnole divergente pour les termes clé de la théorie de la connaissance que l’auteur français exposa dans les pages initiales de sa Logique. La première de ces traductions, qui attribue à la logique un rôle d’introduction aux sciences, choisit des termes systématiquement calqués sur ceux de Dumarsais tandis que J. M. Alea (1781-1826) argumente l’emploi d’une terminologie spécifique, non concordante avec celle du texte source. Ces infidélités terminologiques (et in fine idéologiques) de J. M. Alea peuvent s���expliquer par le désir de ce traducteur de mettre à jour une théorie de la connaissance qu’il voudra rendre conforme à celle de Condillac.

Translation and terminology. Apropos of two Spanish versions of Dumarsais��� Logique (Madrid, 1800)

This article is the English version of “Traducción y terminología. A propósito de dos versiones al español de la Logique (Madrid, 1800) de Dumarsais��� by Brigitte Lépinette. It was not published on the print version of MonTI for reasons of space. The online version of MonTI does not suffer from these limitations, and this is our way of promoting plurilingualism.

The episcopal complex of Eio-El Tolmo de Minateda (Hellín, Albacete, Spain). Architecture and spatial organization. 7th to 8th centuries AD

The episcopal complex of Eio, located in El Tolmo de Minateda, was built between the end of the 6th century and the beginning of the 7th century, possibly as a political decision taken by the ecclesiastical authority in the capital of the Visigothic kingdom (Toletum). With the comprehensive study of the whole complex presented below (construction cycles, furniture, decoration and location of spaces), we can interpret the function of each space in the basilica and the domus episcopi, the liturgical and general movement routes, the existence of some hierarchical environments, and specify the chronological development of the buildings. After the Arab-Berber conquest of Hispania in the early 8th century, the whole complex will experience a series of transformations that will convert the religious and monumental public area into a private, residential and industrial Islamic quarter.

L’episcopio del Tolmo de Minateda (Albacete, Spagna). Architettura e funzione degli ambienti tra la fine del VI e l’inizio dell’VIII secolo

The episcopal complex of Eio, located at El Tolmo de Minateda, was built between the end of the sixth century and the beginning of the seventh century. It may have been created as a result of a political decision taken by the authority of the Visigothic kingdom (based at Toletum) to control the Byzantine territories of south-east Hispania. With a comprehensive study of the construction phases, and of the decoration and location of spaces, we can recreate and interpret the function of each space in the episcopal palatium or episcopium, and detail the chronological development of the building. After the Arab-Berber conquest of Hispania in the early eight century, the whole complex underwent alterations that converted the religious and monumental public area into a private, residential and artisan Islamic quarter.

Los manuscritos ilustrados de la Biblioteca de la Junta

El hallazgo de más de un centenar de manuscritos de origen mudéjar y morisco al tirar una de las paredes de una casa de la población de Almonacid de la Sierra, situada en la provincia de Zaragoza, ha sido uno de los más importantes descubrimientos de manuscritos hispano-árabes, hasta ahora. En este artículo se analizan las ilustraciones de dichos manuscritos, sus funciones y posiciones del texto. As�� se quiere mostrar la importancia del ornamento y decoración de manuscritos en la Península durante la dominación árabe, y cómo este concepto se ve reforzado por la continuidad de los moriscos en decorar sus libros; una continuidad que se puede ver estilística y formalmente, desde los andalus��es hasta los últimos moriscos antes de ser expulsados.