Photocatalytic partial oxidation of limonene to 1,2 limonene oxide

2018 ◽  
Vol 54 (8) ◽  
pp. 1008-1011 ◽  
Author(s):  
Rosaria Ciriminna ◽  
Francesco Parrino ◽  
Claudio De Pasquale ◽  
Leonardo Palmisano ◽  
Mario Pagliaro
Keyword(s):  
Photocatalytic Degradation ◽  
Partial Oxidation ◽  
Light Irradiation ◽  
Solar Light ◽  
Selective Catalyst ◽  
Solar Light Irradiation ◽  
Limonene Oxide ◽  
Degradation Of Pollutants

The silylation of crystalline TiO2 P25, commonly used for photocatalytic degradation of pollutants, results in an exceptionally selective catalyst for the aerobic limonene epoxidation to 1,2-limonene oxide under solar light irradiation.

Solar Synthesis of Limonene Epoxide

2017 ◽  
Author(s):  
Rosaria Ciriminna ◽  
Francesco Parrino ◽  
Claudio De Pasquale ◽  
Leonardo Palmisano ◽  
Mario Pagliaro
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Green Synthesis ◽  
Photocatalytic Degradation ◽  
Industrial Production ◽  
Thermoplastic Polymer ◽  
Selective Catalyst ◽  
Solar Light Irradiation ◽  
Limonene Oxide ◽  
Degradation Of Pollutants

The silylation of crystalline titania P25, commonly used for photocatalytic degradation of pollutants, results in an exceptionally selective catalyst for the aerobic limonene epoxidation to 1,2-limonene oxide under solar light irradiation. The hypothesized mechanism involves the singlet oxygen generated through energy transfer from the excited TiO<sub>2</sub> to adsorbed O<sub>2</sub> molecules. The reaction product is the valued precursor of bio-based poly(limonene carbonate), a thermoplastic polymer of superior thermal and optical properties whose industrial production is in need of an efficient green synthesis of limonene oxide.

Solar Synthesis of Limonene Epoxide

2017 ◽  
Author(s):  
Rosaria Ciriminna ◽  
Francesco Parrino ◽  
Claudio De Pasquale ◽  
Leonardo Palmisano ◽  
Mario Pagliaro
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Green Synthesis ◽  
Photocatalytic Degradation ◽  
Industrial Production ◽  
Thermoplastic Polymer ◽  
Selective Catalyst ◽  
Solar Light Irradiation ◽  
Limonene Oxide ◽  
Degradation Of Pollutants

The silylation of crystalline titania P25, commonly used for photocatalytic degradation of pollutants, results in an exceptionally selective catalyst for the aerobic limonene epoxidation to 1,2-limonene oxide under solar light irradiation. The hypothesized mechanism involves the singlet oxygen generated through energy transfer from the excited TiO<sub>2</sub> to adsorbed O<sub>2</sub> molecules. The reaction product is the valued precursor of bio-based poly(limonene carbonate), a thermoplastic polymer of superior thermal and optical properties whose industrial production is in need of an efficient green synthesis of limonene oxide.

scholarly journals EFFECT OF OPERATIONAL PARAMETER ON PHOTOCATALYTIC DEGRADATION OF OXAMYL PESTICIDE

2020 ◽  
Vol 4 (12) ◽  
pp. 74-84
Author(s):  
Brijesh Pare ◽  
Satish Piplode ◽  
Vaishali Joshi
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Solar Light ◽  
X Ray Diffraction ◽  
Operational Parameter ◽  
X Ray ◽  
Solar Light Irradiation ◽  
Scanning Electron

Flower like bismuth oxy chloride (BiOCl) was successfully synthesized by a simple hydrolytic method at room temperature. The precursor and as-prepared samples were characterized by X-ray diffraction (XRD), High Resolution Field Emission Scanning Electron Microscope (HR FESEM). The results indicated that the as-prepared BiOCl sample is self-assembled hierarchically with nano sheets. The photocatalytic activity of BiOCl was tested on the degradation of the Oxamyl (OM) under solar light irradiation. The results showed that pesticide molecules could be efficiently degraded over BiOCl under solar light irradiation. All the experiment were carried out in the following reaction condition, [OM] = 10-4 mol dm-3, BiOCl NPs= 40mg/50ml, pH= 6.3. Effect of operational parameter such as concentration of H2O2, K2S2O8, FeCl3, Fenton’s reagent (Fe3+/H2O2) and N2, O2 purging on the photocatalytic degradation was observed.

scholarly journals Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles

2018 ◽  
Vol 42 (18) ◽  
pp. 15405-15412 ◽  
Author(s):  
María Emilia Villanueva ◽  
Guillermo Javier Copello ◽  
Viviana Campo Dall’Orto
Keyword(s):  
Photocatalytic Activity ◽  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Light Irradiation ◽  
Solar Light ◽  
Solar Light Irradiation

The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation.

scholarly journals Comparison between the photocatalytic degradation of single and binary azo dyes in TiO2 suspensions under solar light irradiation

2015 ◽  
Vol 5 (4) ◽  
pp. 579-591 ◽  
Author(s):  
Ohm-Mar Min ◽  
Li-Ngee Ho ◽  
Soon-An Ong ◽  
Yee-Shian Wong
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
Azo Dyes ◽  
Azo Dye ◽  
Oxygen Demand ◽  
Light Irradiation ◽  
Solar Light ◽  
Acid Orange 7 ◽  
Solar Light Irradiation

Textile industries discharge a large quantity of colored wastewater which is harmful to the ecosystem. In this study, two kinds of dyes were investigated: the mono azo Acid Orange 7 (AO7) and diazo Reactive Green 19 (RG19). The photocatalytic degradation of single (AO7, RG19) azo dye and binary (AO7 and RG19 mixture) azo dye aqueous solutions was photocatalyzed by commercial titanium dioxide (TiO2, P25) under solar light irradiation. The objectives of this study are to compare the photocatalytic degradation between single and binary azo dye aqueous solution and to study the various parameters such as the effect of different initial azo dye concentrations, different initial azo dye pH values, and compare the adsorption capacity of azo dyes with and without solar light irradiation, which influences the photocatalytic activities of single and binary azo dye aqueous solutions in a TiO2 suspension. The results showed that photocatalytic degradation of AO7 and RG19 in a single azo dye aqueous solution was faster than a binary azo dye solution under the solar light irradiation process. Chemical oxygen demand results revealed that complete mineralization could be achieved for both AO7 and RG19 azo dyes under solar light irradiation within 22 hours.

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