Synthesis, characterization, photocatalytic activity and gas sensing properties of zinc doped manganese oxide nanoparticles

Synthesis of a visible-light-driven Ag2O–Co3O4 Z-scheme photocatalyst for enhanced photodegradation of a reactive yellow dye

“…The proposed photocatalytic mechanism can be explained by the following redox reactions: 68,69 Ag 2 O–Co 3 O 4 + hν → Ag 2 O–Co 3 O 4 (h + ) + Ag 2 O–Co 3 O 4 (e − )Ag 2 O–Co 3 O 4 (h + ) + H 2 O → OHAg 2 O–Co 3 O 4 (e − ) + O 2 → O 2 − O 2 − + H 2 O → OHRY (aq) + OH → degradation productsThe net reaction is:Based on the above net reaction, the rate of reaction is written asAs the reaction is open to the atmosphere, O 2 is considered a constant. Hence the rate expression is modified as eqn (13) and (14) and (15) ( k Ap : the apparent rate constant, [YR] o : the initial concentration of the reactive yellow dye, and [RY] t : the concentration of the dye at various time intervals).[RY] t = [RY] o e − k Ap t The photodegradation data given in Fig.…”

Synthesis of MnCoO/CNT nanoflakes for the photocatalytic degradation of methyl orange dye and the evaluation of their activity against Culex pipiens larvae in the purification of fresh water

“…3,4 Siddique et al , have fabricated zinc manganese oxide via a mechanochemical approach for the improvement of photocatalytic activity. 4…”

“…Several studies in the literature have reported the incorporation of manganese oxide with noble metals for the degradation of textile dyes. 3,4 Siddique et al, have fabricated zinc manganese oxide via a mechanochemical approach for the improvement of photocatalytic activity. 4 Moreover, CNTs of exceptional physicochemical characteristics have been used in a wide range of applications.…”

“…3,4 Siddique et al, have fabricated zinc manganese oxide via a mechanochemical approach for the improvement of photocatalytic activity. 4 Moreover, CNTs of exceptional physicochemical characteristics have been used in a wide range of applications. Doping metal oxides with appropriate amounts of CNTs will produce nanocomposites with desired aspects.…”

Factors influencing the photodegradation of acid orange 8 by nitrocellulose membranes

“…Photocatalytic oxidation technology is a better method for the degradation of textile dyes. The photocatalytic oxidation technology is cheap, and produces clean by-products, is environmentally friendly (Siddique et al, 2020). More importantly, this technology has strong oxidative properties and can effectively degrade organic pollutants (Venkatesh et al, 2018).…”