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Mostrando ítems 11-20 de 71
Essential work of fracture of photo-oxidized LDPE/EVA films
(Wiley, 2007-12)
The Essential Work of Fracture approach (EWF) was used to determine how UV-C irradiation alters the fracture behaviour of LDPE/EVA films. Complementary characterization was performed by FTIR, DSC, TOM, and uniaxial tensile ...
Alkylation of a hydrophilic photosensitizer enhances the contact-dependent photo-induced oxidation of phospholipid membranes
(Elsevier, 2021-03)
Lipophilic photosensitizers able to photo-induce lipid oxidation in biomembranes are, in general, much more efficient than hydrophilic ones; acting through the formation of singlet oxygen (1O2), which oxidizes the fatty ...
Composite H3PW12O40–TiO2 catalysts for toluene selective photo-oxidation
(Elsevier Science, 2018-06-05)
A series of composite systems based on titania and growing quantities of tungstophosphoric acid are prepared and characterized using infrared, nuclear resonance, UV–visible, photoluminescence, and photoelectron spectroscopies, ...
Composite H3PW12O40–TiO2 catalysts for toluene selective photo-oxidation
(Elsevier Science, 2017-11-22)
A series of composite systems based on titania and growing quantities of tungstophosphoric acid are prepared and characterized using infrared, nuclear resonance, UV–visible, photoluminescence, and photoelectron spectroscopies, ...
Sunlight active g-C3N4-based Mn+ (M[dbnd]Cu, Ni, Zn, Mn) – promoted catalysts: Sharing of nitrogen atoms as a door for optimizing photo-activity
(Elsevier, 2019-12)
In this work we analyze the photocatalytic performance of Mn+ (M[dbnd]Cu, Ni, Zn, Mn) - g-C3N4 materials in toluene photo-oxidation under UV and Sunlight-type illumination conditions. The characterization of the solids ...
Heterogeneous photo-Fenton process mediated by Sn-substituted goethites with altered OH-surface density
(Elsevier Science SA, 2019-08)
Heterogeneous photo-Fenton process using several pure- and Sn-incorporated goethites was investigated for the decolourisation of methyl orange (MO). The used goethites presented a partial Sn(IV)-for-Fe(III)substitution. ...
Biowaste-derived substances as a tool for obtaining magnet-sensitive materials for environmental applications in wastewater treatments
(Elsevier Science Sa, 2017-02-15)
In this study, bio-based substances (BBS) obtained from composted urban biowaste are used as stabilizers for the synthesis of magnet-sensitive nanoparticles (NPs). The BBS-stabilized NPs are characterized by means of ...
Removal Of Reactive Black 5 From Textile Wastewater By Ozone And Photo-Fenton: Influence Of Indusrial Matrix Effects
(Planta Piloto de Ingeniería Química, 2020-03)
Textile waste water containing dyes, surfactants, salts and other contaminants represent a challenge for the selection and design of treatment processes due to the stability of some of its compo-nents. Advanced oxidation ...
Quantum efficiency of the photo-induced electronic transfer in dye-TiO2 complexes
(Royal Society of Chemistry, 2018-10)
We present a method based on a time-dependent self-consistent density functional tight-binding (TD-DFTB) approach, able to predict the quantum efficiency of the photoinjection process in a dye-TiO2 complex from a fully ...
Photo-oxidation of Dimethyl Malonate Initiated by Chlorine Atoms in Gas Phase: Kinetics and Mechanism
(American Chemical Society, 2017-10-25)
The rate coefficient for the gas-phase reaction of chlorine atoms with dimethyl malonate (DMM, CH3OC(O)CH2C(O)OCH3) was determined at 298 K using relative methods giving a value of (3.8 ± 0.4) × 10-12, cm3 molecule-1 s-1). ...