Visible light-activated cadmium-doped ZnO nanostructured photocatalyst for the treatment of methylene blue dye

Synthesis, Characterization, and Photocatalysis of ZnO and Er‐Doped ZnO

“…All of the spectra showed two emission bands located at 396 and 484 nm. While the sharper 396-nm emission band has typically been assigned to the near-band-edge emission in ZnO [18], the band in the visible spectral range (showing a peak at 484 nm) has been attributed to the recombination of photogenerated holes with singly ionized charge states of the intrinsic defects such as oxygen vacancies, Zn interstitials, or impurities [19][20][21][22].…”

Synthesis of V2O5 Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

“…This could be done by shifting the band gap absorption edge of wide band gap semiconductors to a longer wavelength via metal or nonmetal doping. For example, Cu doped ZnO nanorods [14] and Cd doped ZnO nanostructures [15] responded to visible light irradiation in degradation of organic dyes. Furthermore, narrow band gap semiconductor such as manganese oxide (MnO 2 ) nanoparticles [16,17] and vanadium dioxide (VO 2 ) nanoparticles [18] could also be used as visible-light-driven photocatalysts.…”

Activated Charcoal Supported Cadmium Doped TiO₂ for Photocatalytic and Antibacterial Applications

“…Among the different types of dyes used in industries, 65-75% belongs to azo compounds. The release of these coloured dyes in the ecosystem without treatment creates extreme environmental pollution problem by releasing toxic and potential carcinogenic substances into the aqueous phase and damaging to the aesthetic nature of the environment [1]. Many traditional techniques such as precipitation, adsorption, air stripping, reverse osmosis, ultra filtration and coagulation have been utilized so far the waste water treatment but they lost their vitality due to usually non destructive nature towards target molecules and they generate auxiliary pollutants of transferring contaminants from water to another phase [2] Hence it is important to develop treatment methods that are more viable in destructing dyes from waste water.…”

“…Many efforts have been paid to enhance the photocatalytic activity of semiconductor TiO 2 , such as semiconductor combination transition metal doping and noble metal deposition. Among these techniques doping with transition metals has been proved as an effective strategies to enhance photo catalyticactivity [1].…”