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Results for 'titan'
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Lithium Storage in Titania Films: Unification of Insertion Electrode and Supercapacitor Concepts
€ 175,95 -
Facile Engineered nano Zinc titanate:
Nanophosphor materials are being extensively investigated in last few decades due to potential applications in various types of displays such as plasma display panels, field emission displays. Conventional phosphors used in fluorescent lamps are not ideal for solid state lighting because they have poor absorption for the light emitting diodes (LED). Quantum dots exhibit narrow absorption and emission with a small Stoke shift. This behavior makes them useful in light management like upconversion and downconversion. Now a days, laboratory synthesized nanostructured materials have attracted the research community a lot and the materials not only motivated by the basic science aspects but also by the expectation that novel properties will lead to new technological applications. Nanostructures have been recognized as an important physical system in view of the remarkable alteration of the bulk properties such as structural, magnetic, optical, dielectric, thermal, etc., due to surface and quantum confinement effects. The potential applications of these quantum-confined atoms in the realm of nanotechnology field are expected to dominate the materials development.
€ 60,90 -
Handbook of Materials Science, Volume 4
Photocatalytic MaterialsThis book presents state-of-the-art coverage of the basic concept, new materials for photocatalysis and their applications. The contents cover types of photocatalysis, homogeneous photocatalysis, heterogeneous photocatalysis, photoelectrochemistry, basic principles of photocatalytic water splitting, theoretical models, UV-light-active photocatalysis, visible-light-active photocatalysis, NIR-lighter-active photocatalysis, various synthesis methods, solar energy conversion, photo-reductive process for trace metal ions, and theoretical design of novel photocatalyst for H2 generation under sunlight. Various semiconductors such as BiFeO3, BiVO4, titanate perovskites (ATiO3), nitrides, oxynitides, metal chalcogenides, graphenes, G-C3N4 based core-shells, transition metals based complexes, transition metal selenides, metal oxides like TiO2, ZnO, SnO2, NiO, CuO and MgO and their various nanocomposites, layered double hydroxides (LDHs), plasmonic semiconductor heterostructures, 2D-layered nanostructures, perovskite-oxide based nanostructures, semiconductors heterostructures, rare-earth ions doped nanomaterials, role of co-catalyst, and band gap engineering are also elaborated. The contents of this book are useful for researchers and professionals working in the areas of materials science, especially photocatalytic materials.
€ 219,95 -
Photoreaktionen im CO2-CH4-System auf metallmodifizierten Titanat-Nanoröhren
€ 43,50 -
Fotorreacções no sistema CO2-CH4 em nanotubos de titanato modificados com metal
€ 43,50 -
Réactions photochimiques dans le système CO2-CH4 sur des nanotubes de titanate modifiés par des métaux
€ 43,50 -
Reazioni fotocatalitiche nel sistema CO2-CH4 su nanotubi di titanato modificati con metalli
€ 43,50 -
Fotorreacciones en el sistema CO2-CH4 sobre nanotubos de titanato modificados con metal
En el presente estudio se investigó la transformación fotocatalítica del sistema metano-dióxido de carbono mediante métodos in situ. En las pruebas catalíticas se utilizaron catalizadores de oro y rodio soportados en nanotubos de titanato (TNT). Nuestro objetivo principal era analizar el papel de los catalizadores en las diferentes partes del mecanismo de reacción. Los catalizadores se caracterizaron mediante espectroscopia fotoelectrónica de rayos X (XPS), microscopía electrónica de transmisión de alta resolución (HRTEM) y espectroscopia de reflectancia difusa UV-visible (DR-UV-VIS). Las pruebas fotocatalíticas se realizaron en un reactor de cuarzo de flujo continuo equipado con un detector de espectrometría de masas y una fuente UV de arco de mercurio. Se utilizó la espectroscopia infrarroja de reflectancia difusa (DRIFTS) para analizar la superficie del catalizador durante la fotorreacción. También se realizaron pruebas poscatalíticas en los catalizadores, incluyendo métodos XPS, reducción programada por temperatura (TPR) y espectroscopia Raman, con el fin de seguir los cambios de los materiales.
€ 35,90 -
Photocatalytic reduction of nitrate in water
Nitrate is one of the most commonly found compounds in watercourses due to the infinity and diversity of existing sources, whether natural or man-made. Its excess can lead to various health and environmental problems, but cheap and efficient ways of treating water contaminated with nitrate are not yet a reality. One of the ways of remediating aquifers or water sources contaminated with nitrate or nitrite, which can add low cost and efficiency, is the use of photocatalysis, which uses ultraviolet (UV) or visible radiation as an energy source for the degradation of nitrate and nitrite. Focusing on this form of treatment, new photocatalysts were synthesised for the reduction of nitrogenous species such as nitrate and nitrite to molecular nitrogen.
€ 39,90 -
Riduzione fotocatalitica del nitrato in acqua
Il nitrato è uno dei composti più comunemente presenti nei corsi d'acqua a causa dell'infinità e della diversità delle fonti esistenti, sia naturali che artificiali. Il suo eccesso può portare a diversi problemi sanitari e ambientali, ma non esistono ancora metodi economici ed efficienti per trattare le acque contaminate da nitrati. Uno dei modi per risanare le falde acquifere o le fonti idriche contaminate da nitrati o nitriti, che può aggiungere costi bassi ed efficienza, è l'uso della fotocatalisi, che utilizza la radiazione ultravioletta (UV) o visibile come fonte di energia per la degradazione di nitrati e nitriti. Concentrandosi su questa forma di trattamento, sono stati sintetizzati nuovi fotocatalizzatori per la riduzione di specie azotate come nitrati e nitriti in azoto molecolare.
€ 39,90 -
Réduction photocatalytique du nitrate dans l'eau
Le nitrate est l'un des composés les plus fréquemment trouvés dans les cours d'eau en raison de l'infinité et de la diversité des sources existantes, qu'elles soient naturelles ou artificielles. Son excès peut entraîner divers problèmes sanitaires et environnementaux, mais les moyens peu coûteux et efficaces de traiter l'eau contaminée par les nitrates ne sont pas encore une réalité. L'un des moyens d'assainir les aquifères ou les sources d'eau contaminés par les nitrates ou les nitrites, qui peut s'avérer peu coûteux et efficace, est l'utilisation de la photocatalyse, qui utilise les rayons ultraviolets (UV) ou visibles comme source d'énergie pour la dégradation des nitrates et des nitrites. En se concentrant sur cette forme de traitement, de nouveaux photocatalyseurs ont été synthétisés pour la réduction des espèces azotées telles que les nitrates et les nitrites en azote moléculaire.
€ 39,90 -
Photokatalytische Reduktion von Nitrat in Wasser
Nitrat ist eine der am häufigsten vorkommenden Verbindungen in Wasserläufen, da es unendlich viele und unterschiedliche natürliche oder vom Menschen verursachte Quellen gibt. Ein Übermaß an Nitrat kann zu verschiedenen Gesundheits- und Umweltproblemen führen, aber billige und effiziente Methoden zur Behandlung von nitratbelastetem Wasser gibt es noch nicht. Eine der kostengünstigen und effizienten Möglichkeiten zur Sanierung von mit Nitrat oder Nitrit kontaminierten Grundwasserleitern oder Wasserquellen ist die Photokatalyse, bei der ultraviolette (UV) oder sichtbare Strahlung als Energiequelle für den Abbau von Nitrat und Nitrit genutzt wird. Für diese Form der Behandlung wurden neue Photokatalysatoren synthetisiert, die stickstoffhaltige Stoffe wie Nitrat und Nitrit zu molekularem Stickstoff reduzieren.
€ 39,90