Sonochemical synthesis and characterization of Cl-doped TiO2 and its application in the photodegradation of phthalate ester under visible light irradiation

Synthesis of Ag‐modified TiO2 nanotube and its application in photocatalytic degradation of dyes and elemental mercury

“…The primary reason for the reduction of Ti 4+ to Ti 3+ is because of the presence of oxygen vacancy . Moreover, the O 1s spectra of both samples show an asymmetric shape, implying the existence of two different chemical states, namely, lattice oxygen (TiO) and hydroxyl groups (OH) . Two sharp peaks between 376 and 364 eV are ascribed to the 3d 5/2 and 3d 3/2 of Ag, respectively.…”

“…45 Moreover, the O 1s spectra of both samples show an asymmetric shape, implying the existence of two different chemical states, namely, lattice oxygen (Ti-O) and hydroxyl groups (-OH). 46 Two sharp peaks between 376 and 364 eV are ascribed to the 3d 5/2 and 3d 3/2 of Ag, respectively. These peaks could be further separated into two peaks, which include the Ag + of AgCl and Ag 0 .…”

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

“…CECs come from a broad spectrum of sources such as but not limited to pharmaceuticals [90], steroids [91], antibiotics [92][93][94], phthalates [95], disinfectants [96], pesticides [97], fragrances (musk) [98,99], preservatives and additives [100]. From definition, the issue with CECs is that they are synthetic or naturally occurring chemicals but are not commonly monitored in the environment.…”

Enhanced hydrogen production activity over BiO X TiO 2 under solar irradiation: Improved charge transfer through bismuth oxide clusters

“…The emission peaks at 457 nm and 537 nm are associated with oxygen-related defect states [32] . The emission peak at 491 nm is ascribed to charge transfer transition from Ti 3 + to TiO 6 2 − octahedra [34,35] . It is important to note that the luminescence intensities of the BT2 and BTNT2 photocatalysts are lower than that of pristine TiO 2 , confirming the higher probability of electron-hole recombination http://engine.scichina.com/doi/10.1016/j.jechem.2016.12.007 in the latter.…”

“…Non-metal doping (N, S, C, F, and Cl) is considered an effective strategy to improve the visible absorption of TiO 2 into the visible region [4][5][6] . In general, anion doping can efficiently enhance visible light absorption, as it decreases the band gap of TiO 2 by creating impurity energy levels.…”