GranitiFiandre SpA

Castellarano, Italy

GranitiFiandre SpA

Castellarano, Italy
SEARCH FILTERS
Time filter
Source Type

Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Sacchi B.,University of Milan | Sacchi B.,Consortium for Science and Technology of Materials | And 8 more authors.
Environmental Science and Pollution Research | Year: 2017

Pharmaceutical compounds and their metabolites raise worrying questions because of their continuous release and lack of efficient removal by conventional wastewater treatments; therefore, they are being detected in groundwater, surface water and drinking water in increasing concentrations. Paracetamol and aspirin are two of the most commonly used drugs employed as fever reducer, analgesic and anti-inflammatory. They and their metabolites are very often found in river water, so their degradation is necessary in order to render water suitable for human consumption. The present work is focused on the comparison of the photocatalytic performance of industrial active grés porcelain tiles covered with a commercial micro-sized TiO2 by industrial process using either conventional spray deposition or innovative digital printing methods. The photodegradation of two commonly used drugs, namely aspirin and paracetamol, was investigated both individually and as a mixture, in both deionized and tap water. The results reveal the full conversion of the drugs and the significant role of the photocatalytic tiles in the mineralization processes leading to harmless inorganic species. In particular, the digitally printed tiles exhibited better photodegradation performance for both drugs compared to the spray deposited tiles. No deactivation was observed on both photocatalytic tiles. © 2017 Springer-Verlag Berlin Heidelberg


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Gatto S.,University of Milan | Pirola C.,University of Milan | And 7 more authors.
Applied Catalysis B: Environmental | Year: 2014

Volatile organic compounds (VOCs) are prevalent components of indoor air pollution. The photocatalytic degradation could be an interesting method to degrade them.This paper reports the photoactivity study of two classical nano-sized and two micro-sized commercial TiO2 powdered samples. Photocatalytic tests have been performed following the degradation of acetone, acetaldehyde and toluene in the gas phase under UV light. An accurate study of the intermediate oxidation products was performed. XPS and FTIR analyses allowed to highlight the relationship between TiO2 surface properties and reactivity toward VOCs explaining the different behavior of the photocatalyst in case of hydrophilic and hydrophobic pollutants. © 2013 Elsevier B.V.


Stucchi M.,University of Milan | Stucchi M.,Consortium for Science and Technology of Materials | Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | And 10 more authors.
Ultrasonics Sonochemistry | Year: 2016

The most important drawback of the use of TiO2 as photocatalyst is its lack of activity under visible light. To overcome this problem, the surface modification of commercial micro-sized TiO2 by means of high-energy ultrasound (US), employing CuCl2 as precursor molecule to obtain both metallic copper as well as copper oxides species at the TiO2 surface, is here. We have prepared samples with different copper content, in order to evaluate its impact on the photocatalytic performances of the semiconductor, and studied in particular the photodegradation in the gas phase of some volatile organic molecules (VOCs), namely acetone and acetaldehyde. We used a LED lamp in order to have only the contribution of the visible wavelengths to the TiO2 activation (typical LED lights have no emission in the UV region). We employed several techniques (i.e., HR-TEM, XRD, FT-IR and UV-Vis) in order to characterize the prepared samples, thus evidencing different sample morphologies as a function of the various copper content, with a coherent correlation between them and the photocatalytic results. Firstly, we demonstrated the possibility to use US to modify the TiO2, even when it is commercial and micro-sized as well; secondly, by avoiding completely the UV irradiation, we confirmed that pure TiO2 is not activated by visible light. On the other hand, we showed that copper metal and metal oxides nanoparticles strongly and positively affect its photocatalytic activity. © 2016 Elsevier B.V.


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Pirola C.,University of Milan | Pirola C.,Consortium for Science and Technology of Materials | And 8 more authors.
Advances in Materials Science and Engineering | Year: 2012

Traditional photocatalysis is here brought forward for both the use of nanosized TiO2 crystallites and the possibility to have a release of TiO2 particles during the final use of the manufactured products. In the present paper both the preparation and characterization of a new generation of photocatalytic tiles are presented. The originality of these products is the surface presence of microsized TiO2 as it is not clear yet the impact of the nanoparticles on both human and environmental safety. TiO2 is here mixed with a silica compound and the final thermal treatment at 680°C allows the complete surface vitrification which, in turn, makes the tiles surface strongly resistant to abrasion. Photocatalytic efficiency towards the degradation of NOxin gas phase was measured in both a batch and a plug-flow reactor. The latter reactor configuration was also modeled by digital simulations. Copyright © 2012 C. L. Bianchi et al.


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Pirola C.,University of Milan | Pirola C.,Consortium for Science and Technology of Materials | And 10 more authors.
Catalysis Science and Technology | Year: 2016

Many reactors were proposed to investigate the efficiency of photocatalytic materials in the degradation of NOx, but the operative conditions are often very far from reality: the parameters and the reactor set-up, which are good for laboratory tests, cannot verify the real efficiency of a photocatalytic material in a real context. To solve this issue, we experimented for the first time with a new kind of gas-flow reactor able to test photocatalytic building materials of large size, optimizing the reaction conditions in order to work both under artificial conditions of irradiation (UV-A lamp) and under direct sunshine. © The Royal Society of Chemistry 2016.


Cannillo V.,University of Modena and Reggio Emilia | Esposito L.,Centro Ceramico Bologna | Pellicelli G.,Granitifiandre S.p.A. | Sola A.,University of Modena and Reggio Emilia | Tucci A.,Centro Ceramico Bologna
Journal of the European Ceramic Society | Year: 2010

Innovative porcelain stoneware tiles with a surface layer containing 2.4. wt% of stainless-steel particles were produced by the Double Charge Technology. Considering this layer as a composite material, the effects of the metal particles on the mechanical behaviour of the ceramic matrix were extensively investigated in terms of Young's modulus, fracture toughness and flexural strength. With this aim, composite materials were prepared by using the same silicate-based ceramic matrix with increasing weight percentages of the same stainless-steel powder. The composites were accurately characterised. In particular, due to the high sintering temperature, possible changes at the interface between metal particles and ceramic matrix were thoroughly analysed by means of SEM and EDS microanalysis. To clarify the role of the observed chromium-rich interphase on the mechanical behaviour of the steel particles-stoneware composites, analytical equations were used and simulations were performed by using the Object Oriented Finite (OOF) element method. © 2010 Elsevier Ltd.


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Sacchi B.,University of Milan | Sacchi B.,Consortium for Science and Technology of Materials | And 8 more authors.
Environmental Science and Pollution Research | Year: 2016

Micro-sized TiO2 catalyst was employed to degrade pharmaceutical compounds, i.e. aspirin and paracetamol, two of the most widely used drugs, purchasable without prescription. Their active agents, acetylsalicylic acid and acetaminophen, are characterized by different substituent groups, linked to the aromatic ring, which affect both the photodegradation and mineralization processes. The experimental conditions highlight the relationship between the nature of the pristine molecules, their degradation mechanisms, their mutual interference and the water’s role. The research started from model systems with a single pollutant to the mixture of them and finally by moving from deionized water to tap water. © 2016 Springer-Verlag Berlin Heidelberg


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Pirola C.,University of Milan | Pirola C.,Consortium for Science and Technology of Materials | And 7 more authors.
Chemical Engineering Journal | Year: 2015

The photocatalytic degradation of NOx in the gas phase was investigated comparing several commercial TiO2 sold as pigmentary-powders and characterized by crystallite sizes ranging from nano to micrometer dimensions. In particular the photocatalytic activity of the micro-sized sample was evaluated in comparison with the well-known activity of the nano-sized samples, being these last photocatalysts potentially dangerous due to the risk towards the human safety. The studied samples were precisely chosen among different commercially available products on the basis of the following features: pure anatase, uncoated surface, undoped material, not sold as photocatalytic materials. All samples reveal good photoactivity in the photodegradation of NOx in gas phase with an evident superiority of the nano-sized sample. However, the gap of activity between nano and micro-sized samples tends to be canceled when the starting NO2 concentration was reduced and fixed from 1000 to 200ppb, a precise amount that is the first alert threshold for NO2 in air (World Health Organization). A proper kinetic model, based on the Langmuir-Hinshelwood mechanism and on the hypothesis of irreversible adsorption of the products on the catalysts surface, has been developed and discussed. © 2014 Elsevier B.V.


Bianchi C.L.,University of Milan | Colombo E.,University of Milan | Gatto S.,University of Milan | Stucchi M.,University of Milan | And 3 more authors.
Journal of Photochemistry and Photobiology A: Chemistry | Year: 2014

Some particular drawbacks due to the industrial use of nano-sized TiO 2 (safety, recovery) in photocatalytic processes for water remediation can be avoided choosing micro-sized TiO2. Tests on both micro-sized TiO2 powder and industrially prepared photocatalytic tiles, having the surface of porcelain-grès tiles hot-coated with the same photocatalyst, were performed. Good photocatalytic performance in the degradation of three organic dyes (rhodamine B, crystal violet and methylene blue) in water phase were achieved. Photocatalytic tiles can really represent a good alternative to TiO2 suspensions and pave the way for the fully industrial use of photocatalysis in environmental remediation. © 2014 Elsevier B.V.


Bianchi C.L.,University of Milan | Bianchi C.L.,Consortium for Science and Technology of Materials | Gatto S.,University of Milan | Pirola C.,University of Milan | And 4 more authors.
Cement and Concrete Composites | Year: 2013

New industrially produced photocatalytic tiles provide not only good photocatalytic performance, but also meet standard requirements with respect to hardness, lack of porosity, vitrified surface, durability. These characteristics were obtained mixing the photocatalytic materials with a commercial SiO 2-based compound conventionally used to create vitrified surfaces. In the preparation, a commercial micro-TiO2 was used to avoid the use of traditional nanomaterials in powder form. Anatase form is maintained even after thermal treatments at 680 °C, as confirmed by both band gap and XRPD measurements on the final material. Photocatalytic degradation tests performed in water and air using methylene blue and NOx as a model pollutant, respectively, confirm the good performance of the tiles in both liquid and gas phase. © 2012 Elsevier Ltd. All rights reserved.

Loading GranitiFiandre SpA collaborators
Loading GranitiFiandre SpA collaborators