Surface properties of UV irradiated PC–TiO2 nanocomposite film

Evaluation of Fracture Toughness of Ultraviolet-Irradiated Polycarbonate Using the Essential Work of Fracture Method

“…in Fig. 9, which is consistent with the results obtained in mechanical tests of EWF 19,26 . Figure 10 shows the fracture morphology observed for samples subjected to the EWF test and exposed to UV radiation for 300 hours and 600 hours.…”

“…The fractographic analysis was performed to determine the fracture mechanisms produced by EWF test and to identify the fracture mode (ductile or brittle) 26 . This allows the correlation of the fracture mode with mechanical tests results before and after UV irradiation.…”

Preparation and characterization of Ag-doped TiO2 nanomaterials and their photocatalytic reduction of Cr(VI) under visible light

“…Nevertheless, the photocatalysis over TiO 2 is limited by three major phenomena: Firstly, due to its wide band gap (3.2 eV), which requires UV light irradiation to obtain its photocatalytic activity; indeed, UV light only accounts for a small fraction (5%) of the sun's energy compared to visible light (45%); Secondly, due to the increased carrier-recombination possibility, only a small fraction of electrons and holes generated by photoabsorption are involved in catalytic reactions; Thirdly, nanosize TiO 2 particles in suspension are difficult to handle and remove after their application in water and wastewater treatment. The separation step can be a tedious and costly process [4][5][6][7][8]. Consequently, there is a need to search for more economical and effective photocatalyst in the visible region for application in catalysis and separations.…”

Preparation and characterization of nano‐SiO2 reinforced alginate‐based nanocomposite films (II)

“…They are expected to become a new family of nanocomposite to improve significantly the material properties because of their remarkable mechanical, optical, electrical, and flame retardancy properties . Meanwhile, nanoscale SiO 2 , Al 2 O 3 , ZnO, CaCO 3 , TiO 2 , and ZrO 2 have been utilized to fabricate nanocomposite films . Among them, SiO 2 is one of the most plentiful materials on Earth, which feature a large specific surface area and multi‐hydroxyl groups substituted on the surface, so it can form a hydrogen bond with the polymer matrix to be widely used to enhance the mechanical property and thermostability .…”