Photocatalytic degradation mechanism of Ce-loaded ZnO catalysts toward methyl green dye pollutant

Slow excitonic carrier cooling in Sr-doped PbS nanocrystals for hot carrier devices: an integrated experimental and first-principles approach

“…The function F ( R ) is the ratio of molar absorption coefficient ( K ) to the scattering probability ( S ) and their values are related to the reflectance ( R ) by the formula K = (1 − R ) 2 and S = 2 R , respectively. 43 The E g values were found to be 1.32, 1.44, 1.41, 1.26, and 1.18 eV for pure PbS and 0.5, 1, 2.5, and 5 wt% Sr:PbS, respectively (Fig. 4b).…”

Green Synthesis and Characterization of LED-Irradiation-Responsive Nano ZnO Catalyst and Photocatalytic Mineralization of Malachite Green Dye

“…For this test, pure nitrogen and oxygen were purged into the photo-reactor in order to study their effect on the photocatalytic mineralization of MG dye. Oxygen is another important oxidizing agent and not only helps in the degradation of dye but reduces electron-hole recombination as well [46]. The graph showed that the degradation of MG was tremendously retarded by the bubbling of pure N 2 but increased rapidly on bubbling O 2 through the dye solution.…”

Noticeably Improved Visible Light Photocatalytic Activity of TiO2 Nanoparticles through co‐Doping of Activated Charcoal and Fe Towards Methylene Blue Degradation

“…Nevertheless, to find the more role of AC on the photocatalytic activity of TiO 2 , a separate work with different concentrations of AC dopants is needed to qualitatively measure the adsorption ability of AC. 2.96 MB 94.7 120 CeO 2 -ZnO [31] 3.28 MB 100 30 rGO-ZnO [12] 3.36 MB 93.4 60 TiO 2 -C [32] NA MB 80.…”

“…While irradiating the reaction system with light photons of sufficient frequency the dye molecules gets break down into their constituents via chemical interactions with photo‐catalyst. Metal oxide semiconductors are extensively studied for photocatalysis as they generate more excitons (i. e., pairs) and oxygen radicals to interact with dye molecules [7,8] . Among the various semiconducting materials, TiO 2 gains significant importance due to its high catalytic activity, prolonged stability and more economic.…”

“…Metal oxide semiconductors are extensively studied for photocatalysis as they generate more excitons (i. e., e À À h þ pairs) and oxygen radicals to interact with dye molecules. [7,8] Among the various semiconducting materials, TiO 2 gains significant importance due to its high catalytic activity, prolonged stability and more economic. However, the large bandgap of TiO 2 (�3 À 3.3 eV) limits their application in direct sunlight photocatalysis, as only 4 % of solar energy constitutes UV radiation to induce excitons.…”