Enhanced photocatalytic activity of TiO2/SiO2–CdS nanocomposite under direct sunlight for degradation of methylene blue

Improved Photocatalytic Activity of Polysiloxane TiO2 Composites by Thermally Induced Nanoparticle Bulk Clustering and Dye Adsorption

“…In particular, the bands at 1089 and 1010 cm −1 can be assigned to the asymmetric stretching of Si−O− Si, 42 while that at 783 cm −1 is due to the symmetrical one of the Si−O bond. 27,43 The peak at 1253 cm −1 can be ascribed to the Si−CH 3 groups, 44 while the 500−700 cm −1 wide band present in the composite can be assigned to the vibration of the Si−O−Ti and Ti−O−Ti bonds. 27,45 These data highlight the presence of all the expected functional groups in the obtained composites.…”

TiO2 nanoflowers based humidity sensor and cytotoxic activity

“…The results of cytotoxic activity conducted in the above study are similar with the studies of P. Govindhan et al also highlights, that TiO 2 @-SiO 2 -Ag was effective against HepG2 and Caco-2 cancer cell line, as it led to inhibition in cell growth. 54 The typical mechanism involves the metabolism of TiO 2 nanoowers induced oxidative stress and which results into the toxicity. The TiO 2 nanoower induce the formation of reactive oxygen species which increases the oxidative stress, this further causes the redox imbalance in the cell.…”

Benign Hydrothermal Synthesis of N‐doped TiO2 and TiO2‐CoS Nanostructures for Enhanced Visible‐Light Driven Photocatalytic Activity

“…During irradiation through simulated sunlight, ample charge carriers reacted with H 2 O/OH − or O 2 on the photocatalyst surface that generated highly reactive species (radicals) like OH • and O 2 •− (Figure ). N‐doping and the presence of CoS significantly enhanced the photogenerated charge separation efficiency, and RhB molecules were photodegraded through the reactions with these radicals to produce harmless products . To further elucidate the enhanced photocatalytic activity of NTNF and NTNF‐CoS nanostructure, a probable photocatalytic mechanism is schematically illustrated in the Figure .…”

“…N-doping and the presence of CoS significantly enhanced the photogenerated charge separation efficiency, and RhB molecules were photodegraded through the reactions with these radicals to produce harmless products. [56][57][58] To further elucidate the enhanced photocatalytic activity of NTNF and NTNF-CoS nanostructure, a probable photocatalytic mechanism is schematically illustrated in the Figure 5. It is well known that N-doping generates a shallow energy level below the conduction band of TiO 2 lattice, resulting in the decrease of band gap as well as red shift toward visible light region.…”