Search results for "Photocatalysis."

A Collection of Chemical Reaction Engineering Solutions in Photocatalysis

2017

There are problems in photocatalysis that researchers cannot disregard in a rigorous study of photocatalytic systems. The purpose of the present work is to show how chemical reaction engineering can answers to the previous questions, thus helping scientists to face researches on photocatalysis more successfull and consistenty

TiO2-CeO2 based catalysts for photocatalytic oxidation of VOC and water splitting reactions

2016

Photocatalysis with TiO2 is one of the most promising green process for the decomposition of organic pollutants and the hydrogen production . Photo-oxidation of 2-propanol, representative of volatile organic compounds (VOC) and photo-catalytic water splitting for H2 production were investigated over TiO2 catalysts doped with a metal (Au and Ag at 1wt. %) and/or ceria (10 wt.%).

Optimization of coupled advanced oxidation processes and activated carbons for purification of salt water

2015

Photocatalysis, ozonation and activated carbons were investigated separately and in combination as tools for the purification of polluted salt water. Coupling different processes enables to overcome many drawbacks related to the use of the single technologies and at the same time to exploit possible synergistic effects. In this work a kinetic analysis was performed for modelling the degradation of 4-nitrophenol (4NP) as a probe pollutant molecule in synthetic seawater. Thus, the optimum synergistic conditions of the three processes acting together were determined and discussed.

Heterogeneous Photocatalysis Coupled with other Technologies for the Purification of Aqueous Effluents

2009

Photocatalytic conversion of glucose in aqueous suspensions of heteropolyacid-TiO2 composites.

2015

Photocatalytic conversion of glucose was carried out in aqueous suspensions in the presence of dfifferent commercial and home prepared TiO2 samples functionalized with a commercial heteropolyacid. Different reaction extents and distribution of intermediate oxidation products were observed depending on the photocatalyst.

TiO2 Nanocristalline samples used to photo-oxidize aromatic alcohols to aldehydes

2010

TiO2 photocatalysts prepared by thermohydrolysis of TiCl4 solutions

2010

Photocatalysis for Green Synthesis

2014

Photosensitised Seeding of Thiolate-Stabilised Gold Nanoparticles

2010

Synergistic effect between hydrodynamic conditions during Ti anodization and acidic treatment on the photoelectric properties of TiO2 nanotubes

2015

In the present work, the combined influence of controlled hydrodynamic conditions during Ti anodization and the acidic treatment with HClO4 on the photoelectric properties of mixed anatase/rutile TiO2 nanotubes has been studied. Anodized samples were analyzed by means of Field Emission Scanning Electronic Microscopy (FE-SEM), Confocal Raman Microscopy, electrochemical measurements (electrochemical impedance spectroscopy and Mott-Schottky analysis) and photoelectrochemical measurements. It has been observed that the use of hydrodynamic conditions increases the surface area of nanotubes, while acidic treatment enhances their conductivity. Besides, there is a clear synergistic effect between t…