Search results for "Tecnologie"

Selective Laser Melting of Ti6Al4V: Effects of Heat Accumulation Phenomena Due to Building Orientation

2022

Titanium alloy Ti6Al4V is one of the most utilized alloys in the field of additive manufacturing due to the excellent combination of mechanical properties, density and good corrosion behavior. These characteristics make the use of this material particularly attractive for additively manufacturing components with complex geometry in sectors such as aeronautics and biomedical. Selective Laser Melting (SLM), by which a component is fabricated by selectively melting of stacked layers of powder using a laser beam, is the one of most promising additive manufacturing technologies for Ti6Al4V alloy. Although this technique offers numerous advantages, it has some critical issues related to the high …

TiO2 Photocatalytic glucose conversion to H2 and high value chemicals

2015

In this work it is reported the conversion of glucose in aqueous dispersion of various TiO2 based photocatalysts. Aerobic and anaerobic conditions were used to study the distribution of the products both in the liquid (arabinose, gluconic acid, fructose and formic acid) and gas (H2 and CO2) phases. Commercial and home prepared bare and Pt-supported TiO2 samples were used as the photocatalysts.

Selective Heterogeneous Photocatalysis by TiO2 for Green Innovative Organic Syntheses: Achievements and Challenges

2009

Photocatalytic membranes based on TiO2 catalysts and fluorinated polymers for CO2 conversion

2015

In this work, prepared TiO2–Nafion™-based membranes were used in a photocatalytic membrane reactor, operated in continuous mode, for converting CO2 to methanol.

Preparation of Sm-loaded brookite nanoparticles and thin films

2010

Sintesi di TiO2 anatasio in presenza di HF: studio delle proprietà strutturali e fotocatalitiche

2016

In questo lavoro viene riportata la sintesi di TiO2 anatasio in presenza di soluzioni contenenti quantità diverse di HF allo scopo di ottenere campioni con proprietà strutturali diverse e la valutazione dell’attività fotocatalitica in reazioni liquido-solido e gas-solido.

Preparation, thermal analysis and photoactivity of TiO2 samples

2012

Sintesi di Piperonale tramite fotocatalisi eterogenea in condizioni green

2013

Addressing the photocatalytic mechanism through TiO2 surface engineering

2018

Addressing the photocatalytic mechanism through TiO2 surface engineering

COMPARISON OF THE PHOTOCATALYTIC DEGRADATION OF 2-PROPANOL IN GAS-SOLID AND LIQUID-SOLID SYSTEMS BY USING TiO2 – LnPc2 HYBRID POWDERS

2009

Photocatalytic degradation of 2-propanol was carried out as a probe reaction both in gas–solid and in liquid–solid systems in the presence of TiO2 both bare and impregnated with lanthanide (Sm, Gd, Ho) bis-phthalocyanines (LnPc2) used as sensitizers. Continuous and batch photo-reactors, irradiated with an equal flux of photons, were used in gas–solid and in liquid–solid systems, respectively. Propanone and acetaldehyde were the main intermediates found in both systems during 2-propanol oxidation, whereas carbon dioxide and water were the final oxidation products exclusively in the gas–solid regime. The photocatalysts exhibited significantly higher activity in the liquid–solid system than in…