Quantification of hydroxyl radicals on cementitious materials by fluorescence spectrophotometry as a method to assess the photocatalytic activity

Sulfur-doped CoFe2O4 nanopowders for enhanced visible-light photocatalytic activity and magnetic properties

“…10. The stronger uorescence signal for 0.3S-CoFe 2 O 4 meant lower level of recombination and the longer lifetimes of the carriers than CoFe 2 O 4 nanoparticles, 33 then more valid e À -h + pairs participated in the radical-chain reaction and more cOH groups were generated. In order to investigate the photocatalytic degradation mechanism of OTC, the trapping experiments of 0.3S-CoFe 2 O 4 were performed to explore the main reactive species.…”

Production and testing of novel photocatalytic TiO2 surface-exposed nanoparticle (TiO2-SEN) thin plastic films

“…However, in contrast to the Rz solution test, the Rz ink is very easily applied, quick to respond and easy to assess. As a result, it, and other paii's, are proving increasingly popular as a quick method for assessing the photocatalytic activities of surfaces [35][36][37][38][39][40][41][42].…”

Hydroxyl radical and free and shallowly trapped electron generation and electron/hole recombination rates in TiO2 photocatalysis using different combinations of anatase and rutile

“…The mechanism governing TiO2-mediated photocatalysis has been widely studied [1,2]. The free carriers (eand h + ) generated have been shown to participate in the photocatalytic degradation of adsorbed pollutants, directly or via the formation of reactive oxygen species (ROS) [3,4]. The identification of such species (charge carriers and ROS) and their generation and recombination rates are consequently of scientific and technological significance, for they may contribute to the design of new materials with practical applications.…”