Photocatalytic removal of organic dye using green synthesized zinc oxide coupled cadmium tungstate nanocomposite under natural solar light irradiation

Fatima, Bushra; Siddiqui, Sharf Ilahi; Malik, Maqsood Ahmad; Rao, Katabathini Narasimha; Ahmad, Rabia; Vikrant, Kumar; Kim, Tae-Jin; Kim, Ki‐Hyun

doi:10.1016/j.envres.2022.114534

Cited by 16 publications

(24 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, the movement of holes from the photocatalytic surface drives the oxidation reaction. The process of photodegradation of dye molecules involves both reduction and oxidation reactions [74]. In this study, we comprehensively analyze the sequential reactions that occur following the photodegradation of MB molecules using Fe 3 O 4 -CdO NC.…”

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

Fe3O4-CdO Nanocomposite for Organic Dye Photocatalytic Degradation: Synthesis and Characterization

Albeladi,

Khan,

Al-Thabaiti

et al. 2024

Catalysts

Self Cite

View full text Add to dashboard Cite

In this study, pure CdO nanoparticles, magnetic Fe3O4 nanoparticles, and Fe3O4-CdO nanocomposites were prepared via a solution combustion method using cetyltrimethylammonium bromide (CTAB) as a template. These prepared nanomaterial samples were characterized by X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron microscopy (XPS), transmittance electron microscopy (TEM), and scanning electron microscopy (SEM) analysis. XRD patterns confirmed the purity and the crystalline nature of the prepared samples. FTIR and Raman spectra observed the metal-oxygen (M-O) bond formation. UV-vis DRS studies were performed to investigate the optical properties and the bandgap energy determination. The surface morphology and the size of the pure CdO nanoparticles, magnetic Fe3O4, and nanocomposites of Fe3O4-CdO were determined via TEM and SEM analysis. Under optimum experimental conditions, the Fe3O4-CdO nanocomposites were applied for photocatalytic activity against Methylene blue dye. Under visible light irradiation, Fe3O4-CdO nanostructures showed an efficient photocatalytic degradation of 92% against Methylene blue organic dye and showed excellent stability for multiple cycles of reuse.

show abstract

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

Fe3O4-CdO Nanocomposite for Organic Dye Photocatalytic Degradation: Synthesis and Characterization

Albeladi,

Khan,

Al-Thabaiti

et al. 2024

Catalysts

Self Cite

View full text Add to dashboard Cite

show abstract

“…Treatment of motorway rainwater resulted in a 61% reduction in color after just 5 min of photocatalytic ozonation, with a further achievement of 75% reduction after 30 min. In the case of water from the roof, the color concentration was 7 mg Pt/L and a 57% reduction was achieved through a significant level of pigment degradation, a phenomenon welldocumented in numerous publications [38][39][40][41].…”

Section: Resultsmentioning

confidence: 82%

“…It is significant that most studies on this topic have been conducted on model samples, which may not fully reflect real conditions and often require longer processing times [39][40][41]44]. For example, the research by Nabizadeh et al showed that photocatalytic ozonation of a methyl blue solution resulted in 58% degradation after 20 min, compared to 39% degradation without the addition of ozone [40].…”

Section: Resultsmentioning

confidence: 99%

Integrated Ozonation and Photocatalysis to Remove Pollutants for Reuse of Rainwater

Marszałek,

Affek,

Załęska-Radziwiłł

et al. 2024

Sustainability

View full text Add to dashboard Cite

Rainwater is susceptible to pollutants such as sulphur dioxide, nitrogen oxides, heavy metals, and particles, posing challenges to water quality protection and soil degradation, impacting ecosystems and agriculture. The study focuses on the effectiveness of combined ozonation and photocatalysis in improving physicochemical parameters and reducing toxic substances. Integrated analyses, including ecotoxicological assessments, evaluate the impact of treatment on actual rainwater samples. The results indicate significant reductions in color, heavy metals, and organic pollutants after treatment. Microbiological analyses reveal the inactivation of E. coli, which is crucial for safe water reuse. Ecotoxicity studies show no toxicity to crustaceans, but slight toxicity to algae and bioluminescence bacteria in post-treatment samples. Genotoxicity assessments indicate that there is no detectable DNA damage. Overall, the study highlights the complex nature of rainwater pollution and the efficacy of photocatalytic ozonation in reducing contaminants, underscoring the need for more research to ensure sustainable water resource management.

show abstract

“…They also don't eliminate pollutants and cause their transfer from one phase to another, which requires further purification; complementary techniques must be used to achieve extraordinary results. One of the new methods is advanced oxidation processes (AOPs), which use highly reactive species such as hydroxyl radicals (OH), superoxide (O 2 − ), ozonide (O 3 − ), and electron-hole pairs to break down the organic compounds into harmless substances or carbon dioxide and water [ [6] , [7] , [8] ]. Since combined techniques generally aim to treat all possible contaminants, AOPs are the best choice due to their efficient and non-selective performance.…”

Section: Introductionmentioning

confidence: 99%

Influence of ozone supply mode and aeration on photocatalytic ozonation of organic pollutants in wastewater using TiO2 and ZnO nanoparticles

Nabizadeh,

Amrollahi,

Ghafary

et al. 2023

Heliyon

View full text Add to dashboard Cite

Photocatalytic removal of organic dye using green synthesized zinc oxide coupled cadmium tungstate nanocomposite under natural solar light irradiation

Cited by 16 publications

References 62 publications

Fe3O4-CdO Nanocomposite for Organic Dye Photocatalytic Degradation: Synthesis and Characterization

Fe3O4-CdO Nanocomposite for Organic Dye Photocatalytic Degradation: Synthesis and Characterization

Integrated Ozonation and Photocatalysis to Remove Pollutants for Reuse of Rainwater

Influence of ozone supply mode and aeration on photocatalytic ozonation of organic pollutants in wastewater using TiO2 and ZnO nanoparticles

Contact Info

Product

Resources

About