Photodegradation of Phenol Red in a Compound of Type ZnO@Cr Core/Shell

Silveira, Gisele S.; Nobre, Marcos Augusto Lima; Lanfredi, Silvania

doi:10.4028/www.scientific.net/msf.881.410

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…The chromophoric structure was responsible for the bands at 432 and 590 nm, whereas the benzoic ring was responsible for the band at 263 nm. [26][27][28][29][30][31] The formula used to compute the percentage of dye degradation in samples for the most strong absorption peak at 432 nm based on initial and final UV-visible absorption data is:…”

Section: Photocatalysis Of Pr Dyementioning

confidence: 99%

Photoluminescent and photocatalytic behaviour of zinc oxide nanostructures synthesized through the room temperature ultrasonication method

Malik

Assadullah

et al. 2022

Luminescence

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In the present article we report the synthesis of zinc oxide (ZnO) nanostructures at room temperature using an ultrasonication technique to study their photoluminescent and photocatalytic behaviour. Synthesized nanomaterial showed a strong near band edge ultraviolet (UV) light emission and red emission, thereby finding its use in photoluminescent materials. We developed a UV/ZnO/O2/H2O2 system for the photodegradation of organic pollutants in an aqueous system. We used synthesized nanostructures to photodegrade phenol red (PR) dye to check their photocatalytic activity. The ZnO nanostructures photodegraded more than 90% of the PR dye under UV light irradiation in which photonic energy is converted to chemical energy (photocatalytic energy conversion), thereby exploitable for water purification applications. Synthesized ZnO nanostructures were characterized using powder X‐ray diffraction, Fourier transform infrared spectroscopy, UV–visible light spectroscopy, scanning electron microscopy, and energy dispersive X‐ray spectroscopy to investigate their structural, optical, morphological, and compositional properties, respectively.

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Section: Photocatalysis Of Pr Dyementioning

confidence: 99%

Photoluminescent and photocatalytic behaviour of zinc oxide nanostructures synthesized through the room temperature ultrasonication method

Malik

Assadullah

et al. 2022

Luminescence

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show abstract

“…At the end these ions and radicals react with phenol red compound until complete mineralization. Photodegradation mechanism of phenol red under UV light is represented as follows 31,35‐39 …”

Section: Applicationsmentioning

confidence: 99%

“…Photodegradation mechanism of phenol red under UV light is represented as follows. 31,[35][36][37][38][39] 6 | CONCLUSION DFT was employed to study the optoelectronic properties of ZnO theoretically. XRD and UV-visible spectroscopy were used to study the structural and optical characteristics of synthesized nanostructures.…”

Section: Photocatalysis Of Phenol Red Dyementioning

confidence: 99%

A comparative experimental and theoretical study on the structural and optical properties of ZnO synthesized at room temperature using an ultrasonication technique

Malik

Assadullah

et al. 2022

Energy Storage

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In the present article we report a comparative experimental and theoretical study on the structural and optical properties of ZnO. First principle calculations were carried out using density functional theory (DFT) to study the electronic structure of ZnO. The direct-type band gap was found in the ZnO's typical estimated energy band structure in the Brillouin zone path G-G or in the middle of the Γ k-point grid. To develop UV/ZnO/O 2 /H 2 O 2 system for photodegradation of organic contaminants in an aqueous system, zinc oxide (ZnO) nanostructures were synthesized using an ultrasonication process at ambient temperature. To test the photocatalytic activity of synthesized nanostructures, we used phenol red (PR) dye as a test substrate. We found that ZnO nanostructures photo-degraded PR dye at a rate of over 90% under ultraviolet light irradiation, converting photonic energy into chemical energy (photocatalytic energy conversion) that can be used for water purification. To explore the structural, optical, morphological, and compositional characteristics of synthesized ZnO nanostructures, various techniques including powder X-ray diffraction, Fourier-transform infrared spectroscopy, UV-visible spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy were used.

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Novel uranyl-curcumin-MOF photocatalysts with highly performance photocatalytic activity toward the degradation of phenol red from aqueous solution: effective synthesis route, design and a controllable systematic study

Khandan

Afzali

Sargazi

et al. 2018

J Mater Sci: Mater Electron

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Photodegradation of Phenol Red in a Compound of Type ZnO@Cr Core/Shell

Cited by 3 publications

References 12 publications

Photoluminescent and photocatalytic behaviour of zinc oxide nanostructures synthesized through the room temperature ultrasonication method

Photoluminescent and photocatalytic behaviour of zinc oxide nanostructures synthesized through the room temperature ultrasonication method

A comparative experimental and theoretical study on the structural and optical properties of ZnO synthesized at room temperature using an ultrasonication technique

Novel uranyl-curcumin-MOF photocatalysts with highly performance photocatalytic activity toward the degradation of phenol red from aqueous solution: effective synthesis route, design and a controllable systematic study

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