How does photocatalytic activity depend on adsorption, composition, and other key factors in mixed metal oxide nanocomposites?

Emara, Mahmoud Mohamed; Ali, Shrouq Hossam; Hassan, Abdelhamied Ahmed; Kassem, Taher S.; Patten, P. Gregory Van

doi:10.1016/j.colcom.2020.100341

Cited by 17 publications

(1 citation statement)

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“…3. Briefly, dark experiment for 10 min was done to achieve an equilibrated surface adsorption/desorption process (Emara, Ali, Hassan, Kassem, & Van Patten, 2021). Then, the photodegraded solutions were compared against the direct photolized solution to obtain the net photodegradation efficiency.…”

Section: The Boosted Photocatalytic Activity Of the Coupled Systemmentioning

confidence: 99%

Study of the mechanism pathway of sulfasalazine degradation on a novel quadripartite visible-light-driven photocatalyst

Omrani,

Nezamzadeh-Ejhieh

2024

Preprint

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A novel coupled Cu2O-CdS-BiVO4-WO3 quadripartite nanoscale catalyst was prepared and characterized by XRD, SEM-DX, x-ray mapping, and DRS techniques. Its pHpzc was also determined to be about 9. The photodegradation experiments were designed via RSM. The optimal run in the photodegradation of sulfasalazine (SSZ) included the CSSZ: 7 mg/L, pH 6.25, 30 min irradiation time, 0.45 g/L of the catalyst dose, by a catalyst with a Cu2O-CdS-BiVO4-WO3 mole ratio 3:1:1:1 under visible light illumination. The effects of the scavenging agents were also studied, and the results confirmed the critical role of superoxide in SFSZ photodegradation and the hydroxyl radicals. The photodegradation pathway obeyed the direct Z-scheme mechanism, which involved three successive binary Z-scheme components involving WO3-BiVO4, BiVO4-CdS, and CdS-Cu2O, which accumulates the photoinduced electrons in the CB-Cu2O and the holes in the VB-WO3, the more powerful reducing and oxidizing centers, respectively.

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Section: The Boosted Photocatalytic Activity Of the Coupled Systemmentioning

confidence: 99%