Mechanistic insight into the photocatalytic degradation of organic pollutants and electrochemical behavior of modified MWCNTs/Cu–Co₃O₄ nanocomposites

Abstract

The present work reported, the synthesis of pure Co3O4 and Cu-Co3O4 nanocrystals by (Polyethylene glycol) PEG-assisted microwave heating route. Crystallinity, morphology, elemental composition, optical, and electrical properties of the as-synthesized...

Electrocatalytic and photocatalytic activity of CuTiO3 perovskites for complete degradation of methylene blue under sunlight irradiation

“…This suggests that photogenerated holes (h + ) and electrons (e − ) are another efficient species in the degradation of methylene blue, along with hydroxyl radicals and superoxide anion radicals. 27…”

“…Thus, sunlight was used for the photocatalytic degradation of dye. 27 The results showed that the photocatalytic degradation efficiency was improved in 90 minutes of reaction by increasing the concentration of Cu from 0.10 M to 0.20 M in the crystallite lattice of CuTiO 3 . As seen in Fig.…”

“…18a-d). 32 The ability of the photocatalyst surface to absorb photons (light) and the formation of extremely reactive radicals are both impacted by the adsorption of MB dye molecules thereon, which significantly affects the percentage of photocatalytic degradation. This shows that the initial concentration of an organic dye influences its adsorption.…”

Dual catalytic activity of hexagonal Mg–Sr codoped ZnO nanocrystals for the degradation of an industrial levafix olive reactive dye under sunlight and biosensing applications

“…33 Based on the results, a further study on dye photodegradation will be carried out at pH 7 of the dye solution using 0.06 M Mg–Sr codoped ZnO catalyst dose of 15 mg and the initial concentration of the LO dye solution at 20 ppm and 180 min of sunlight irradiation. 34…”

Photocatalytic degradation of methyl orange by a diethylenetriamine modified chitosan/bentonite composite

“…1,2 These pollutants may cause serious threats to ecological and environmental systems, and further affect aquatic life and human health. 3 Moreover, due to their special chemical structures and π-conjugated systems, most dye pollutants are difficult to be degraded by conventional physicochemical and biological methods. 4,5 Thus, the efficient removal of these pollutants has attracted considerable research attention from researchers due to their ecological and environmental impacts.…”