Zinc Oxide–Nanoclinoptilolite as a Superior Catalyst for Visible Photo-Oxidation of Dyes and Green Synthesis of Pyrazole Derivatives

Kakhki, Roya Mohammadzadeh; Karimian, Azam; Hasan-nejad, Hossein; Ahsani, Fatemeh

doi:10.1007/s10904-019-01100-8

Cited by 24 publications

(1 citation statement)

References 48 publications

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“…Since ZnO can absorb a larger range of the light spectrum than TiO 2 , researchers investigated the photocatalysis properties of ZnO/CP in different kinds of wastewater, such as bromothymol blue [81], phenylhydrazine [59], 4-nitrophenol [82], and aromatic amine [83] aqueous solutions. Mohammadzadeh et al [84] prepared the ZnO/CP composites by mixing the Zn(NO 3 ) 2 solution and CP powder. The photocatalyst could degrade about 88% of methylene blue in 40 min under optimal conditions.…”

Section: Common Semiconductor/clinoptilolite Photocatalystsmentioning

confidence: 99%

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Zhou,

Wang,

Shen

et al. 2024

Catalysts

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One of the most challenging problems for people around the world is the lack of clean water. In the past few decades, the massive discharge of emerging organic pollutants (EOPs) into natural water bodies has exacerbated this crisis. Considerable research efforts have been devoted to removing these EOPs due to their biotoxicity at low concentrations. Heterogeneous photocatalysis via coupling clay minerals with nanostructured semiconductors has proven to be an economical, efficient, and environmentally friendly technology for the elimination of EOPs in drinking water and watershed water. Natural zeolite minerals (especially clinoptilolites) are regarded as appropriate supports for semiconductor-based photocatalysts due to their characteristics of having a low cost, environmental friendliness, easy availability, co-catalysis, etc. This review summarizes the latest research on clinoptilolites used as supports to prepare binary and ternary metal oxide or sulfide semiconductor-based hybrid photocatalysts. Various preparation methods of the composite photocatalysts and their degradation efficiencies for the target contaminants are introduced. It is found that the good catalytic activity of the composite photocatalyst could be attributed to the synergistic effect of combining the clinoptilolite adsorbent with the semiconductor catalyst in the heterogeneous system, which could endow the composites with an excellent adsorption capacity and produce more e−/h+ pairs under suitable light irradiation. Finally, we highlight the serious threat of EOPs to the ecological environment and propose the current challenges and limitations, before putting the zeolite mineral composite photocatalysts into practice. The present work would provide a theoretical basis and scientific support for the application of zeolite-based photocatalysts for degrading EOPs.

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Section: Common Semiconductor/clinoptilolite Photocatalystsmentioning

confidence: 99%

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Zhou,

Wang,

Shen

et al. 2024

Catalysts

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Facile and green synthesis of Cu₃V₂O₈ nanostructures via Moringa peregrina natural extract as a high performance photo catalyst

Rahni

Kakhki

2019

Applied Organom Chemis

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In this paper Cu3V2O8 nanoparicles were synthesized with a low‐cost and green method with using the extract of Moringa peregrine. This novel synthesized material was characterized by using X‐ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and Energy‐dispersive X‐ray spectroscopy (EDS) analysis. The analysis showed the produced nanoparticles have high purity and well crystalline structure. Moreover, the capability of the nanostructures for the removal of dye pollutants was evaluated. For this purpose, methylene blue was selected as a model of organic dye. The experiments showed Cu3V2O8 nanoparticles have high efficiency for removing of dye molecules. Photocatalytic decolorization of methyl blue was optimized with varying the experiment conditions. With 0.02 g of catalyst, pH 6 and concentration of dye 30 mg/l removal efficiency was obtained about 90% in a short time 20 min. Also a kinetic study showed this photodegradation process obeys a first‐order kinetic with rate constant about 0.07 min−1.

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Development of a novel and high performance visible‐light‐induced Cd₃OSO₄ nanophotocatalyst for degradation of diazinon

Kakhki

Ahsani

2020

Applied Organom Chemis

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One of the most important challenge in recent years is the removal and even better than that the degradation of poisons from environmental systems. Nanostructures due to their interesting properties are very suitable for this purpose. Herein, Cd3OSO4 nanomaterial was synthesized with a simple co precipitation method, characterized and was used, as a visible‐light‐driven photocatalyst in degradation of diazinon. The experimental conditions were also optimized. The results showed degradation efficiency is about 90%. Moreover, some kinetic studies were performed and showed this system obeys first order kinetics. Photo‐ oxidation mechanism was investigated in the presence of hole and electron scavengers. This is the first report on the investigation of the photocatalytic properties of Cd3OSO4 nanomaterial. The calculations of band gap of this new photocatalyst (1.85ev) showed its capability for application as a new visible light driven photocatlyst.

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Zinc Oxide–Nanoclinoptilolite as a Superior Catalyst for Visible Photo-Oxidation of Dyes and Green Synthesis of Pyrazole Derivatives

Cited by 24 publications

References 48 publications

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Facile and green synthesis of Cu₃V₂O₈ nanostructures via Moringa peregrina natural extract as a high performance photo catalyst

Development of a novel and high performance visible‐light‐induced Cd₃OSO₄ nanophotocatalyst for degradation of diazinon

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Zinc Oxide–Nanoclinoptilolite as a Superior Catalyst for Visible Photo-Oxidation of Dyes and Green Synthesis of Pyrazole Derivatives

Cited by 24 publications

References 48 publications

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Removal of Emerging Organic Pollutants by Zeolite Mineral (Clinoptilolite) Composite Photocatalysts in Drinking Water and Watershed Water

Facile and green synthesis of Cu3V2O8 nanostructures via Moringa peregrina natural extract as a high performance photo catalyst

Development of a novel and high performance visible‐light‐induced Cd3OSO4 nanophotocatalyst for degradation of diazinon

Contact Info

Product

Resources

About

Facile and green synthesis of Cu₃V₂O₈ nanostructures via Moringa peregrina natural extract as a high performance photo catalyst

Development of a novel and high performance visible‐light‐induced Cd₃OSO₄ nanophotocatalyst for degradation of diazinon