Synthesis and photocatalytic application of Au/Ag nanoparticle-sensitized ZnO films

Methylene Blue Photodegradation under Visible Irradiation on Ag-Doped ZnO Thin Films

“…Therefore, improving the photoresponse of ZnO to longer wavelengths of the electromagnetic spectrum is the goal to be achieved for photocatalytic applications under solar irradiation [7]. Different strategies have been reported to extend photoresponse of semiconductors into the visible light region: (a) sensitization with natural and synthetic dyes [8][9][10][11], (b) coupled semiconductors [12][13][14], (c) surface plasmon resonance [15][16][17][18], and (d) doping ZnO structure with metals and nonmetals [19][20][21]. Among these, the doping process can modify the band gap of ZnO, generating electronic state intragap inside of the semiconductor thus ensuring the photoactivity redshift; on that topic, different authors have reported that ZnO changed photoresponse after the doping process [22].…”

Electrochemical production of ZnO and ZnO@Ag core-shell nanorods on ITO substrate and their photocatalytic and photoelectrochemical performance

“…ZnO film was electrodeposited potentiostatically on ITO substrate potentiostatically and calcined in air at 400 °C. ZnO films with different modifications of Au and Ag have been investigated to investigate the morphology, optical properties and effect of photocatalytic activity of Ag and Au nanoparticles (Chen et al 2013).…”

Synthesized of Double Layer Thin Film ZnO/ZnO:Ag by Sol-Gel Method for Direct Blue 71 Photodegradation

“…It showed that the addition of Ag shifted the absorption ZnO spectra. Previously studies (Karyoui et al, 2015;Chen et al, 2013;Bahnemann, 2004) reported that the appropriate wavelength absorption by ZnO will increase electron transfered from valence band to conduction band. The generated holes were very important for formation of hydroxyl radicals that are used for degradation of pollutants.…”