0000000000449734
AUTHOR
Giuseppe Marci'
showing 126 related works from this author
TiO2 thin films: preparation, characterisation and their photocatalytic activity
2005
Titania-Silica Mesoporosa per l’ossidazione Parziale Fotocatalitica di Propilene in Regime Gas-Solido
2013
Polymer leaf of expanded material coated with titanium dioxide exhibiting photocatalytic activity, container and package for foodstuffs obtained from…
2010
Photocatalytic activity of titanium dioxide thin films prepared by a sol-gel method
2006
Comparison between catalytic and photocatalytic activity in gas-solid regime of semiconductor oxides and carbon nanotubes supported Keggin heteropoly…
2015
Catalytic and photocatalytic 2-propanol dehydration was carried out by using a supported Keggin heteropolyacid H3PW12O40 (PW12). Binary materials were prepared by impregnation and/or solvothermal treatment by using commercial supports: SiO2 (Mallinckrodt), TiO2 (Evonik P25) and multiwall carbon nanotubes (Sunnano) or home solvothermically prepared SiO2 and TiO2. All the materials have been characterized by X-ray diffraction (XRD), scanning electron microscopy observations (SEM) coupled with EDX microanalysis, specific surface area measurements, diffuse reflectance spectroscopy (DRS), FTIR and Raman spectroscopy. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regime by usin…
Adsorption and Photocatalytic Degradation of Acetonitrile on TiO2: FTIR and Kinetic Studies
2005
Ossidazione mediante fotocatalisi e ozonizzazione dello ione ossalato in soluzioni acquose contenenti biossido di titanio
2004
Selective heterogeneous photocatalysis: examples of green photosyntheses
2009
Degradation of Drugs in Aqueous Medium: Photocatalytic oxidation of Lincomycin
2004
TiO2-H3PW12O40 binary solids prepared in different conditions: a comparison of their photocatalytic activity
2010
Ba0.5Sr0.5Co0.8Fe0.2O3-x electrocatalyst prepared by combustion-based methods: the role of the fuel type
2010
Binary Materials TiO2 or ZnO-Activated Carbon Used as Photomediators in the Photocatalytic Degradation of 2-Propanol in Gas-Solid Regime
2010
CO2 Reduction in Gas-Solis Regime by Using GaP/TiO2 as Photocatalyst
2014
Tungstophosphoric Acid Supported on TiO2 for the Photodegradation of 4-Nitrophenol in Liquid Phase and of 2-Propanol in gas Phase
2008
TiO2 Supported over Hβ and HZSM-5 Photocatalysts for Salmonelle and Escherichia Coli Disinfection
2008
Cyanuric Acid Oxidationi in UV Irradiated ZnO Suspensions
2008
The role of different oxides as supports of an heteropolyacid in the catalytic and catalytic photo-assisted propene hydration
2013
Evaluation of Biological Effects and Heterogeneous Photodegradation of Terpenes Present in Wastewater From a Citrus Fruit Transformation Factory
2008
Preparation, Characterisation and Photocatalytic activity of SrTiO3 based Perovskites.
2014
Photocatalytic degradation of organic pollutants by using polycrystalline TiO2: case studies for environment remediation
2004
Photodegradation of lincomycin in aqueous solutions
2005
TiO2-Anatase powders for photocatalytic applications: sol-gel synthesis and relative thermal characterization
2004
Comparison of Different Photocatalytic Systems for Acetonitrile Degradation in Gas-Solid Regime
2005
Role of the support on the activity of H3PW12O40 supported on SiO2 or TiO2 in Catalytic and Photocatalytic propene hydration: An EPR Study
2016
Catalytic and catalytic photo-assisted hydration of propene to 2-propanol in gas-solid regime at atmospheric pressure and 85°C were carried out by using the Keggin heteropolyacid (HPA) H3PW12O40 (PW12) supported on home prepared SiO2, WO3, TiO2 or N-doped TiO2. The HPA played the key role both in catalytic and photocatalytic reactions; however, the support strongly influenced the binary material performance. The contemporary presence of heat and UV light improved the activity of the (photo)catalysts. EPR (Electron Paramagnetic Resonance) has been used to understand the intimate mechanism underlying the photoactivity of the supported heteropolyacid and the role played by the support.
Mineralización fotocatalítica de heterociclos aromáticos y alicíclicos que contienen nitrógeno: relación entre productos de reacción que contienen ni…
2008
Cobalt in strontium titanate based perovskites: preparation, characterization and role in the photocatalytic propene partial oxidation
2016
Strontium titanate perovskite (SrTiO3) and analogous materials in which Y partially substitutes Sr have been prepared as basis to integrate Co in the structure. The Co inserrtion has been performed by wet impregnation or coprecipitation methods. The obtained powders have been physico-chemically characterized and tested as photocatalysts in the propene partial oxidation by using a solar simulating reactor. Correlation between photocatalytic performance and physicochemical characteristics of the different catalysts allows to assess a key role of local nanostructuring of CoOx sites on the selectivity and distribution of products.
Preparation, Characterization of rutile obtained by hydrolisis of TiCl4
2005
Film di TiO2 da idrolisi di TiCl4: preparazione, caratterizzazione e fotoattività
2005
Preparazione di TiO2 nanostrutturato a partire da TiCl4.
2004
H3PW12O40 supportato per l'idratazione di propene in regime gas-solido: attività catalitica e catalitica fotoassistita
2011
Photocatalytic CO2 reduction in gas-solid regime in the presence of bare or Cu-loaded TiO2 and water
2013
Photocatalytic partial oxidation of propylene in the presence of mesoporous organosilane-modified titanias
2014
Studies on Catalytic and catalytic photo-assisted propene hydration in the presence of H3PW12O40 supported on different oxides
2013
Perovskiti a base SrTiO3: Preparazione, caratterizzazione ed attività fotocatalitica in regime gas-solido
2014
TRMC, XPS, EPR Characterisations of Polycrystalline TiO2 Porphyrin Impregnated Powders and their Catalytic Activity for 4-Nitrophenol Photodegradatio…
2005
TiO2 Nanomaterials Used as Photocatalysts for Selective Heterogeneous Syntheses of Alcohols to Aldehydes in Water
2011
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…
Preparation of Sm-loaded brookite nanoparticles and thin films
2010
H2 and value added chemicals from photocatalytic conversion of glucose
2015
Commercial and home prepared bare and Pt-supported TiO2 samples were used as the photocatalysts for the aqueous aerobic and anaerobic photo-conversion of glucose at ambient pressure and temperature. H2 and valuable chemicals were the obtained products. The home prepared samples resulted more active than the commercial ones
2-propanol formation by propene hydration: Catalytic and catalytic photo- assisted reaction using H3PW12O40 supported on TiO2 and SiO2.
2012
Photocatalytic oxidatioon of acetonitrile : degradation performance in gas-solid and liquid-solid systems
2004
Exploring Solvent-free Citrate-Nitrate Auto-Combustion for the Synthesis of SOFC Electrocatalysts
2009
Ossidazione fotocatalitica del glucosio in presenza di TiO2
2014
Studio di processi fotocatalitici: dalla preparazione del fotocatalizzatore alla comprensione della cinetica e del meccanismo di reazione
2006
New TiO2 based photocatalysts for the degradation of organic pollutants in water
2009
Photocatalytic Oxidation of Acetonitrile
2004
Oxidación Fotocatalítica de Acetonitrilo en Regimen Gas-Sólido y Líquido-Sólido
2004
Ossidazione del 2-Propanolo Fotocatalizzata da Sistemi Ibridi Bis-Ftalocianina Lantanide-TiO2:Confronto tra Processi Gas-Solido e Liquido-Solido
2008
Role of the support and pseudo-liquid phase in the Phosphotungstic Heteropolyacid (photo)catalytic activity
2016
Catalytic and photocatalytic tests for propene hydration to 2-propanol were successfully carried out by using binary materials obtained by supporting a Keggin or Wells-Dawson heteropolyacids via impregnation method to commercial SiO2 or TiO2. (Photo)catalytic hydration was studied in gas-solid regime by using a continuous (photo)reactor working at atmospheric pressure and 80 °C. The alcohol was the main product. The acidity of the cluster accounts for the catalytic role, whereas both the acidity of the cluster and the oxidant ability were responsible for the increase of the reaction rate of the photo-assisted catalytic reaction. Moreover, the presence of a photoactive semiconductor support …
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.
Kinetics of photocatalytic degradation of pharmaceuticals in aqueous TiO2 suspension
2006
Sintesi e caratterizzazione di polveri e film di TiO2
2006
Studio della Fotodegradazione di Antibiotici in Ambiente Acquoso
2004
A Study on the Influence of the Presence of Activated Carbon in TiO2 and ZnO Photo-Assisted Degradation of 2-Propanol
2010
Preparazione, caratterizzazione e attività fotocatalitica sotto luce solare naturale di perovskiti La1-xSrxCo1-yFeyO3-
2014
Preparation in mild conditions of photocatalitically active nanostructured TiO2 rutile
2006
Photocatalytic mineralization of N-containing alicyclic and aromatic heterocycles: Relationship between products containing nitrogen and structure of…
2009
Green Organic Reactions by TiO2 Photocatalysis
2015
This contribution gives an account of TiO2-based selective photocatalysis as a green synthetic tool for the production of organics. Some case studies of the most common transformations carried out by means of photocatalytic reactions are illustrated.
Synthetic Green Chemistry through Heterogeneous Photocatalysis
2015
This contribution deals with a short review of some application of TiO2 to green organic synthesis. In particular to selective oxidation of aromatic alcohols under mild conditions.
Selective Photocatalytic Production of Aldehydes
2013
Polycrystalline TiO2 Powders Impregnated with Porphyrins Used for the Photocatalytic Degradation of 4-Nitrophenol
2004
"Caratterizzazione ottica di sospensioni acquose di fotocatalizzatori utilizzati in processi di abbattimento di inquinanti organici
2004
Mechanistic aspects of oxalic acid oxidation by photocatalysis and ozonation
2006
Preparazione, Caratterizzazione e Fotoattività di Film di TiO2
2005
Preparation and characterization of photocatalytic TiO2 films
2005
SrTiO3 Based Perovskites: Preparation, Characterization and Photocatalytic Activity in Gas-Solid Regime
2014
Degradazione Fotocatalitica Eterogenea di Acetonitrile e Toluene in Regime Gas-Solido e Liquido-Solido
2004
Photocatalytic activity in gas–solid regime of ZnO-ZnAl2O4 composites
2011
La1−xSrxCo1−yFeyO3− perovskites: Preparation, Characterization and Solar Photocatalytic Activity
2014
Degradación fotocatalítica de 2-Propanol en régimen gas-sólido utilizando como fotocatalizadores materiales binarios TiO2-carbón activo y ZnO-carbón …
2010
Photocatalytic activity of TiO2 thin films prepared in the presence of organic and inorganic additives
2007
Preparation and Photoactivity of Rutile Obtained by Hydrolysis of TiCl4
2005
Citrate-nitrate auto-combustion synthesis of perovskite-type nanopowders: A systematic approach
2009
Characterisation and photoactivity of nanostructured TiO2 obtained by hydrolysis of TiCl4
2005
Photodegradation of Lincomycin in aqueous TiO2 suspension by using artificial or solar light
2004
Degradation of Lincomycin in Aqueous Medium: Coupling of Solar Photocatalysis and Membrane Separation
2004
TiO2 Heterogeneous Photocatalysis as a Selective Tool for Organic Green Syhtneses
2010
Photocatalytic abatement of organic compounds using home prepared TiO2 as photocatalysts
2005
TiO2 Impregnated with Polyoxometallate as Photomediator in 2-Propanol Gas-Solid Regime Photocatalytic Degradation
2008
Confronto tra attività catalitica e fotocatalitica dell’eteropoliacido di Keggin H3PW12O40 supportato su ossidi o su nanotubi di carbonio
2015
Catalytic and catalytic photo-assisted dehydration of 2-propanol to form propene in gas-solid regime at atmospheric pressure and 80°C was carried out by using a Keggin heteropolyacid H3PW12O40 (PW12) supported on different oxides. Binary materials have been prepared by impregnation of PW12 on different commercial and home prepared supports (TiO2, SiO2 or carbon nanotubes). The supported Keggin PW12 species played a key role both for the catalytic and the photo-assisted catalytic reactions, due to their strong acidity and ability to form strong oxidant species under UV irradiation, respectively. The contemporary presence of heat and UV light improved the activity of almost all POM supported …
Surface characterization of metal ions loaded TiO2 photocatalysts: structure-activity relationship
2004
Transition metal loaded TiO2 powders were characterised and tested for the photodegradation of some organic acids. Both Lewis and Brønsted surface acid sites were present in the samples containing large amounts of Mo, V and W. The Brønsted sites are associated to the presence of the transition metals as they do not exist in the unloaded support, and in particular to the presence of these metals in high oxidation states. The trend of the pzc values of the various powders matches rather well both with the surface acidity of the samples experimentally determined by NH3 adsorption and with a scale of acidity/basicity for bulk binary oxides. XPS investigation indicates that only the presence of …
Selective Heterogeneous Photocatalysis: Achievements and Challenges
2009
Preparation, characterisation and photoactivity of nanostructured TiO2 catalysts
2004
Comparison between catalytic and catalytic photo-assisted propene hydration by using supported polyoxometalate.
2012
A study on the catalytic perfomances of H3PW12O40 supported on TiO2 and SiO2 for propene hydration in the presence and in the absence of UV light
2012
Photocatalytic Oxidation of Drugs by Using Artificial and Solar Irradiation
2004
Studio dell’Influenza del Carbonio Attivo sulla Degradazione Fotocatalitica del 2-Propanolo Condotta in Presenza di Biossido di Titanio o di Ossido d…
2010
Photo-assisted Degradation of 2-Propanol in Gas-Solid Regime by Using TiO2 Impregnated with Heteropolyacids H3PW12O40
2009
Commercial and home prepared TiO2 samples impregnated with tungstophosphoric acid (H3PW12O40) were used for the photo-assisted degradation of 2-propanol in gas–solid regime. The characterization results evidenced a good coverage of the polyoxometalate (POM) onto the surface of TiO2 along with a marginal effect of the presence of the POM on the specific surface area, morphology and cristallinity of the samples. Propene was the main intermediate product revealed in 2-propanol photocatalytic degradation by using as photocatalysts the samples containing the POM, whereas propanone wasmainly obtained when the photocatalysts was bare TiO2, both commercial or home prepared. Acetaldehyde was also fo…
Ossidazione fotocatalitica di benzonitrile in sospensioni acquose di biossido di titanio
2006
Influence of activated carbon in the TiO2 mediated photo-assisted degradation of 2-propanol in gas-solid regime
2009
Attività catalitica e fotocatalitica di eteropoliacidi Wells-Dawson e Keggin per la disidratazione del 2-propanolo in regime gas-solido
2016
Tra i più studiati poliossometallati (nanoagglomerati di ossigeno con metalli transizionali), figurano gli eteropoliacidi (EPA) che sono degli acidi inorganici forti con ben defin ite strutture molecolari. In funzione della loro geometria, essi vengono classificati come Keggin e Wells-Dawson. Gli (EPA) sono usati in catalisi omogenea ed eterogenea e funzionano anche come fotocatalizzatori, essenzialmente in sistemi omogenei. Questi materiali sono, inoltre, economici e non tossici.
Genotoxicity of Terpenes Present in Wastewater of a Citrus Transformation Factory in Bacterial and Mammalian Cells and Effectiveness of Photocatalyti…
2010
The aim of this work was to compare the genotoxic responses of mixtures of terpenes present in wastewaters of a citrus transformation factory with the genotoxicity of the individual compounds. Samplings of wastewater collected before (untreated sample) and past water purification by biological method (treated sample) were analyzed using Solid Phase Micro-extraction (SPME) followed by GC analyses. The chromatograms showed in all effluents the presence of four terpenes: pinene, -pinene, 3-carene, D-limonene. The concentrations of terpenes in the untreated sample were 1–3 orders of magnitude higher than in the treated sample. Genotoxicity was evaluated in the Salmonella reversion assay (Ames t…
Zn,Al hydrotalcites calcined at different temperature: Characterisation and photocatalytic activity for the degradation of 2-propanol in gas-solid re…
2009
GaP/TiO2 Composite Photocatalyst for CO2 Reduction in Gas-Solid Regime under Simulated Solar Light Irradiation
2014
Preparation, Characterisation and Photocatalytic Activity of Zn,Al Oxides Derived from Zn,Al LDHs
2009
Selective (photo)catalytic formation of 2-propanol from propene by using an heteropolyacid supported on different oxides
2012
Influenza del Sostituente sulla Ossidazione Fotocatalitica Selettiva di Composti Aromatici
2005
La1−xSrxCo1−yFeyO3− perovskites: Preparation, Characterization and Solar Photocatalytic Activity in gas-solid regime
2014
Comparison of activity in the 2-propanol dehydration of supported heteropolyacid (photo)catalysts at the gas-solid interface
2015
Catalytic and photocatalytic tests for 2-propanol dehydration to propene were successfully carried out by using binary materials obtained by supporting a Keggin heteropolyacid H3PW12O40 (PW12) via impregnation method and/or solvothermal treatment. The supports used were commercial SiO2 (Mallinckrodt), TiO2 (Evonik P25) and multiwall carbon nanotubes (Sunnano) or home solvothermically prepared SiO2 and TiO2. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regime by using a continuous (photo)reactor working at atmospheric pressure and 80 °C. the reaction was also studied by performing FTIR spectra of the gas-phase over the HPA-support composites, where the 2-propanol had been…
Heterogeneous photocatalysis: optical characterisation of polycrystalline photocatalysts for pollutant degradation in aqueous medium
2005
Preparazione di fotocatalizzatori a base di TiO2 brookite drogati con samario
2010
Nanomateriali a base di TiO2 come fotocatalizzatori per sintesi selettive di alcoli ad aldeidi in fase acquosa
2011
Photocatalytic oxidation of benzonitrile in aqueous suspensions of titanium dioxide
2006
Green Production of Aldehydes from Alcohols by Heterogeneous Photocatalysis
2010
Preparation, characterization and photocatalytic activity of TiO2 rutile
2005
Photocatalytic Oxidation of Acetonitrile in Aqueous Suspension of Titanium Dioxide Irradiated by Sunlight
2004
Oxidación Fotocatalítica del Acetonitrilo en Régimen Gas-Sólido y Líquido-Sólido
2004
Optical Characterisation of Semiconductors Used as Photocatalysts for the Degradation of Organic Pollutans in Acqueous Medium
2004
Preparazione di Fotocatalizzatori Nanostrutturati a Base di TiO2
2004
Photocatalysis: Applications
2016
Heterogeneous photocatalysis is a sustainable technology mainly employed for water and air cleaning purposes. However, in the last two decades a lot of attention has been given to photocatalysis as an alternative route to be used in place of traditional industrial processes. The sustainability of photocatalysis mainly comes from the exploitation of renewable sources, such as solar light, and the possibility to avoid unsafe reagents/solvents and severe temperatures and pressures. In this chapter we give a critical presentation of some case studies concerning the use of heterogeneous photocatalysts, such as modified and bare TiO2, ZnO, ZnS, WO3, titanium silicalite, V2O5, polyoxometalates, Cd…
Photocatalytic Active Polymer Expanded Materials Coated with TiO2 Used as Package for Foodstuffs
2011
Preparation of Photoactive Polycrystalline Titanium Dioxide
2006
P46: ADSORPTION AND PHOTOCATALYTIC DEGRADATION OF ACETONITRILE ON TiO2: FT-IR AND KINETIC STUDIES
2005
Preparazione e caratterizzazione di film fotocatalitici
2004
Lanthanide Diphthalocyanine – Photosensitizers in TiO2 Hybrid Catalytic Systems: Green Chance for The Nature
2008
Keggin and Wells-Dawson supported heteropolyacids as heterogeneous (photo)catalysts for gas-solid 2-propanol dehydration
2016
Catalytic and photocatalytic tests for 2-propanol dehydration to propene were successfully carried out by using binary materials obtained by supporting a Keggin or Wells-Dawson heteropolyacids via impregnation method to commercial SiO2 or TiO2. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regime by using a continuous (photo)reactor working at atmospheric pressure and 80 °C. Propene and diisopropyl ether were the main reaction products. For the continuous photo-assisted runs the reactor was also illuminated with UV light. The heteropolyacid species played a key role both for the catalytic and the photo-assisted catalytic reactions; indicating that the acidity of the clust…
TiO2 Nanocristalline samples used to photo-oxidize aromatic alcohols to aldehydes
2010
H3PW12O40 SUPPORTED ON DIFFERENT OXIDES: INFLUENCE OF THE SUPPORT ON THE CATALYTIC AND CATALYTIC PHOTO-ASSISTED PROPENE HYDRATION
2012
Efecto de la Fotocatálisis Heterogenea y la Ozonización sobre la Oxidación del Ion Oxalato en Suspensión Acuosa de TiO2
2004
Reazione catalitica e fotocatalitica di disidratazione in fase gas-solido del 2-propanolo in presenza di eteropoliacidi "Keggin" e "Wells-Dawson" sup…
2015
La disidratazione catalitica e fotocatalitica di 2-propanol a propilene è stata effettuata usando eteropoliacidi di Keggin H3PW12O40 (PW12) e Wells-Dawson H6P2W18O60 (P2W18). Sono stati utilizzati sia supportani che non. Materiali binari sono stati preparati per l'impregnazione degli eteropoliacidi su supporti commerciali: SiO2 (Aldrich) e TiO2 (Evonik P25). I materiali sono stati caratterizzati e la loro (foto) attività catalitica rispetto alla disidratazione 2-propanol evaluata in regime gas-solido utilizzando un reattore continuo a pressione atmosferica e un range di temperatura fra 60 e 120 ° C. Inoltre, per gli esperimenti fotoassititi il reattore è stato illuminato da un LED UV. Impor…
Riduzione Fotocatalitica di CO2 in Presenza di Catalizzatori Compositi GaP/TiO2
2014
Studio delle proprietà acido-base superficiali e fotoattività di catalizzatori nanostrutturati costituiti da TiO2
2007
Preparation of photocatalytic nanostructured TiO2 thin films
2008
Photolytic and TiO2-Assisted Photodegradation of Aqueous Solutions of Tetracycline
2004
Aqueous solutions of tetracycline were UV-irradiated in homogeneous and heterogeneous systems. Tetracycline disappeared in both systems, but the presence of TiO2 accelerated the photodegradation of the antibiotic in comparison with direct photolysis. The rate of decomposition was dependent on the concentration of tetracycline and its degradation on the surface of TiO2 can be described by means of a pseudo-first order kinetics. Photolysis involved only the photodeamination of tetracycline and a partial mineralization. Unlikely, the treatment with TiO2 and UV-light resulted in a complete mineralization of the antibiotic drug.