Ecofriendly synthesis and solar photocatalytic activity of S-doped ZnO

Photocatalytic degradation of bisphenol A in the presence of C-doped ZnO: Effect of operational parameters and photodegradation mechanism

“…Nenavathu et al [17] reported that doping with Se leads to the generation of many hydroxyl radicals and the incorporation of oxygen vacancy defects. The photocatalytic activity of S-doped ZnO was found to be 2 times greater than that of pure ZnO on the photocatalytic degradation of resorcinol because S-doped ZnO shows much more oxygen vacancies than that of pure ZnO [18].…”

New insight into the enhanced photocatalytic activity of N-, C- and S-doped ZnO photocatalysts

“…In contrast, metal doping is more likely to induce the formation of vacancies or defect states that can serve as the recombination center for photogenerated electrons and holes. Compared with other nonmetal dopants, nitrogen [41][42][43][44][45][46], carbon [47][48][49][50][51] and sulfur [52][53][54] have been more extensively studied in recent years. Doping ZnO with these nonmetal elements has shown to be promising approaches to narrow the band gap and thus induce stronger visible-light absorption.…”

Spray drying assisted assembly of ZnO nanocrystals using cellulose as sacrificial template and studies on their photoluminescent and photocatalytic properties

“…The green emission peak at around 510 and 512 nm corresponds to the singly ionized oxygen vacancy in ZnO and results from the recombination of a photo-generated hole with the singly ionized charge state of this defect. Therefore, the intensity of the green luminescence can be utilized to estimate the density of singly ionized oxygen vacancies [35][36][37]. As can be seen from Fig.…”