Pulse radiolytic studies of the reaction of pentahalophenols with OH radicals: formation of pentahalophenoxyl, dihydroxypentahalocyclohexadienyl, and semiquinone radicals

Role of oxygen active species in the photocatalytic degradation of phenol using polymer sensitized TiO2 under visible light irradiation

“…Thus, hydroxyl radicals are usually considered to be the major species responsible for photocatalysis of organic pollutants in wastewater, based on evidence that includes detection of hydroxylated intermediates, distribution of the hydroxylation products, and spin trapping with subsequent ESR detection. [21,22].…”

Rapid photocatalytic degradation of PCP–Na over NaBiO3 driven by visible light irradiation

“…4b gives a schematic band structure of NaBiO 3 and the possible photocatalytic reaction procedures. [21,22]. On the other hand, the process of OH − forming during the photocatalysis indicates the reaction could be suppressed when the pH value of PCP-Na solution is under basic condition.…”

Photo-degradation of chlorophenols in the aqueous solution

“…Hydroxyl radicals can react with organic substances by: electron transfer, H • abstraction, or • OH addition to an aromatic ring [45,46]. The present paper discusses results of kinetic investigations of the reactions of chlorophenols with hydroxyl radicals, generated by adding H 2 O 2 to irradiated aqueous solutions of these compounds [14,[23][24][25][26]34,35,40,[47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64].…”

“…Terzian et al [62], investigating interactions of hydroxyl radicals with PCP with pulse radiolysis using optical detection, revealed that a pentachlorophenoxyl radical can be formed via a homogenous reaction of the azide radical with pentachlorophe- nolate. The azide radicals react with aromatic substances via direct electron transfer.…”