Search results for "O2"
showing 10 items of 1115 documents
Photocatalytic water splitting over inverse opal TiO2 catalysts
2017
Photocatalytic water splitting over inverse opal TiO2 catalysts
TiO2-H3PW12O40 binary solids prepared in different conditions: a comparison of their photocatalytic activity
2010
From smart to lean : how to design for better cities, happier citizens and save the world
2018
Come è possibile progettare città più “sostenibili”, “resilienti” e “smart” in un’era di scarsità di risorse, profondi conflitti sociali ed epocali emergenze ambientali? Le nuove e complesse sfide urbane stanno profondamente cambiando il ruolo di progettisti e pianificatori, sempre più “designer/manager” di un costante processo di revisione di tutto ciò che concerne l’habitat umano. Indagando in modo cross-disciplinare il complesso sistema di relazioni fra uomo, città e risorse naturali, si presenta un nuovo approccio a progetto e attuazione delle politiche urbane per la sostenibilità ambientale e sociale. Un approccio manageriale mutuato dall’ambito della gestione di imprese e l’innovazion…
Analisi teorico-sperimentale dell’influenza dei parametri operativi sullo scambio termico durante l’evaporazione in convezione forzata di CO2 e misce…
2012
An empirical approach for ranking environmental and energy saving measures in the hotel sector
2009
The energy demand of the hotel sector of an Italian region is here utilized for hierarchizing, by means of an empirical method, efficient measures devoted to energy saving and reduction of CO2 emissions. Due to the large number of consumers present in the selected territorial area and the lack in detailed data, the energy demand assessment is here carried out by the analysis of a sample of representative consumers. A short set of indexes, referring to energy and environmental performances, are defined and calculated for different clusters of hotels, grouped on the basis of site characteristics, opening periods, number of beds, and building age. Such indexes are utilized to establish lists o…
The Lean Urban Policies’ Design A values-centered method for sustainable urban planning.
In these past years, the necessity and urgency has emerged for policies tied to an alternate development to be efficiently applied, and not limited to single operations. The policies must be defined by a clear and effective method of action. Starting by investigating what are the relationship among human being, built environment and natural sources, in fact, we think it is possible to enrich the sustainable urban planning policies with new contents and possibly, new tools. By describing the frame, the objective is to define the most effective method, to be able to convey an effective project action and governance for the territory, to achieve predefined social and energy based objectives. …
The effect of Annealing Conditions on the Impedance and on the Photoelectrochemical behavior of TiO2 Nanotubes
2015
Titanium oxide nanotubes (NTs) have attracted much attention during last decade due to their special characteristics such as one-dimensional highly ordered geometry with large surface area and good chemical and optical stability.
Anodic TiO2 in ReRAM: Influence of Si-doping on the Resistive Switching Properties of Titanium Oxide
2016
TiO2 has attracted much attention due to its potential widespread applications, including capacitors, photocatalysis, solar energy conversion and, more recently, redox-based random access memories (ReRAM). For micro and nano-electronics applications, TiO2 is usually grown through Chemical and Physical Vapour Deposition techniques, such as Atomic Layer Deposition (ALD), Pulsed Laser Deposition (PLD), Sputtering and so on. In ReRAM field, the control of oxide structure (crystallinity, defects concentration etc.) and the choice of electrodes are crucial to have resistive switching phenomena inside the oxide. Thus, anodizing can be proposed as a simple and low cost way to grow TiO2 and to tune …
Heteropolyacids - Chitosan Membranes for H2/O2 Low Temperature Fuel Cells
2016
Proton exchange membrane fuel cells (PEMFCs) have received much attention in recent years because of their high power density, efficiency and zero-environmental pollution. As one of the key components in fuel cells, the proton exchange membrane is expected to have high proton conductivity and good electrochemical stability. In the attempt to promote PEMCFs commercialization, high cost of fuel cell systems and short lifecycle are the two main issues that need to be addressed, thus large research effort has been devoted in developing new polymer electrolytes that can replace the usually employed proton conductors, e.g. Nafion®, with other membranes of comparable performances but lower cost.A…