Surface-modified TiO2 nanoparticles with ascorbic acid: Antioxidant properties and efficiency against DNA damage in vitro

Band Gap Implications on Nano-TiO2 Surface Modification with Ascorbic Acid for Visible Light-Active Polypropylene Coated Photocatalyst

“…Nowadays, a greater challenge in the environmental field relies on the treatment of contaminants and advanced oxidation processes (AOPs) have been considered as alternatives to traditional water treatment technologies [ 1 , 3 ]. Among several AOPs, TiO 2 based photocatalysis has received huge attention as one of the most viable environmental clean-up technologies [ 1 ]; TiO 2 has been considered as among the most promising materials due to its high chemical stability, low cost, chemical inertness, commercial availability, and outstanding photocatalytic activity [ 4 , 5 , 6 , 7 ]. TiO 2 has been extensively used in many industrially relevant processes ranging from environmental applications to clean energy, from paints to cosmetics and medicine [ 7 ].…”

“…Among several AOPs, TiO 2 based photocatalysis has received huge attention as one of the most viable environmental clean-up technologies [ 1 ]; TiO 2 has been considered as among the most promising materials due to its high chemical stability, low cost, chemical inertness, commercial availability, and outstanding photocatalytic activity [ 4 , 5 , 6 , 7 ]. TiO 2 has been extensively used in many industrially relevant processes ranging from environmental applications to clean energy, from paints to cosmetics and medicine [ 7 ]. The semiconductor materials find application in medicine as a photosensitizer for photodynamic and photothermal therapy of cancer, as well as for drug delivery [ 7 , 8 , 9 ].…”

Mechanistic insights into photocatalysis and over two days of stable H2 generation in electrocatalysis by a molecular cobalt catalyst immobilized on TiO2

“…Thus 63% of the catalyst remained stably bound to the NPs in a solution containing both AscO − and TCEP in a 20 000-fold excess, both known to compete for adsorption on TiO 2 . 53 Summing up, we present the first example of an immobilized polypyridyl catalyst with high rates and more than 10 kTONs under photocatalytic conditions. The turnover frequencies (TOF [H 2 WRC −1 s −1 ]) do not differ significantly between the catalysts 6 and 8 in solution.…”

The mTOR/GCLc/GSH Pathway Mediates the Dose-Dependent Bidirectional Regulation of ROS Induced by TiO2NPs in Neurogenic Cells

“…Most NPs could induce ROS [16,17], including TiO 2 NPs [10], but the ROS induced by NP exposure mainly occurred at high treatment concentrations [18,19]. Moreover, other studies have reported that modified TiO 2 NPs exert efficient antioxidant properties [20], and TiO 2 NPs could activate the antioxidant system in HepG2 cells [21] and could even protect cells from death by antioxidant effects [22]. In addition to from TiO 2 NPs, cerium oxide nanoparticles also showed antioxidant abilities, as they could modify the activities of enzyme that protect against oxidative stress and exert antioxidant effects by regulating the Nrf-2/HO-1 pathway [23].…”