Photocatalytic degradation of organic components in water by means of TiO2 nanosuspensions under ultraviolet (UV) irradiation represents an efficient method for water purification. In the present paper, a modeling approach is proposed to simulate the involved kinetic processes based on the Langmuir– Hinshelwood mechanism. The extended model also includes the formation of intermediate organic co...

The increasing production and use of engineered nanomaterials (ENMs) inevitably results in their higher concentrations in the environment. This may lead to undesirable environmental effects and thus warrants risk assessment. The ecotoxicity testing of a wide variety of ENMs rapidly evolving in the market is costly but also ethically questionable when bioassays with vertebrates are conducted. Th...

The aim of this study was to modify the TiO2 photocatalyst with different amounts ZnO (0.25, 0.5, and 1 wt. %) B (1, 5, 10 %), as B-ZnO/TiO2, for mineralization photodegradation direct red 16 (DR16). B-ZnO/TiO2 synthesized by sol-gel method composite 5 % 0.5 selected optimal composition, based on DR16 removal experiments. Th results showed that efficiencies optimum were 47 87 in B-TiO2 respecti...

This study aims to investigate the treatment of real textile wastewater using a novel bentonite clay/TiO2/ZnO-based ozonation catalyst. In this study, synergic electroflocculation/catalytic ozonation, catalytic and processes are applied in modified hybrid reactor. To authors’ knowledge, is first application clay/TiO2/ZnO as an catalyst for treating wastewater. The four operational variables—ozo...

We describe the synthesis and characterisation of novel photocatalytic multiphase micro-droplet reactors comprising TiO2 nanosheets dispersed in poly(diallyldimethylammonium) chloride and adenosine 5'-triphosphate or poly(ethylene glycol) 4-nonylphenyl 3-sulfopropyl complex coacervates. We demonstrate significant variations in the degree of equilibrium partitioning of small molecule dyes into t...

An eco-friendly preparation technique was used to synthesize zinc oxide (ZnO) from Hibiscus rosa-sinensis extract. In addition, titanium dioxide (TiO2) combined with ZnO in a nanocomposite. The structural investigation done by x-ray diffraction (XRD) and the hexagonal symmetry of detected. calculated crystallite size increased 31.3 34.4 nm. Furthermore, functional groups organic residues were d...

Interfacial charge transfer from photoexcited ruthenium-based N3 dye molecules into ZnO thin films received controversial interpretations. To identify the physical origin for the delayed electron transfer in ZnO compared to TiO2, we probe directly the electronic structure at both dye-semiconductor interfaces by applying ultrafast XUV photoemission spectroscopy. In the range of pump-probe time d...