Nano-sized Fe-metal catalyst on ZnO–SiO2: (photo-assisted deposition and impregnation) Synthesis routes and nanostructure characterization

Effect of polar and non-polar surfaces of ZnO nanostructures on photocatalytic properties

“…The photocatalytic activity of nanocrystals is not only sensitive to crystal size but also to morphology [17][18][19]. Because photocatalytic reaction occurs at the interface between the catalyst surfaces and organic pollutants, the morphology of catalyst which affects surface atomic arrangements and coordination can play an important role in photocatalytic process [20,21].…”

Synthesis, characterization and photocatalytic activity of NaNbO3/ZnO heterojunction photocatalysts

“…In recent years, many kinds of novel heterogeneous metal oxide semiconductor materials, such as TiO 2 [1], ZnS [2,3], ZnO and Fe 2 O 3 nanocatalysts have been developed for environmental remediation [4][5][6][7][8]. Among various semiconductor nanostructures, ZnO, with a band gap of 3.37 eV, has attracted much attention in such fields as gas sensors [9][10][11], electrical and optical devices [12][13][14], field-emitters [15], electrostatic dissipative coating and catalysts for liquid phase hydrogenation [16,17].…”

ZnO Nano Reactor on Textiles and Polymers: Ex Situ and In Situ Synthesis, Application, and Characterization

“…Therefore modification of semiconductor for enhancing photocatalytic activity has become the most important subject. , Up to now, many methods have been employed to modify nano ZnO. For example, coupling two semiconductors such as ZnO/TiO 2 , ZnO/SnO 2 , and ZnO/Fe 2 O 3 , − or doping with transition metal ions such as Fe, Ag, − and Co are some of the important ones. The combination of semiconductors and transition metals has been demonstrated to improve the photocatalytic activity and charge transfer. , The proposed photocatalytic mechanism of Ag/ZnO is shown in reactions –: , ZnO + normalh ν → normale − 1 + normalh + Ag → Ag + + e − 2 false( or ⁢ normale − 1 false) e − 2 false( or ⁢ normale − 1 false) + O 2 → O − • 2 …”