Cobalt/zinc oxide hollow spheres: Visible light nanophotocatalysts

Mohamed, Reda M.; McKinney, David; Kadi, Mohammad W.; Mkhalid, I.A.; Sigmund, Wolfgang M.

doi:10.1016/j.ceramint.2015.10.024

Cited by 21 publications

(8 citation statements)

References 14 publications

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“…35,36 Hence, CoO-ZnO can be employed as an effective visible light photocatalyst for the degradation of organic pollutants. [37][38][39] Bandgap ¼ 1240 Wavelength…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

et al. 2022

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“…35,36 Hence, CoO-ZnO can be employed as an effective visible light photocatalyst for the degradation of organic pollutants. [37][38][39] Bandgap ¼ 1240 Wavelength…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

et al. 2022

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“…Zhang et al synthesized ZnO-Co 3 O 4 nanocomposites by chemical method for acetone sensing applications in which they obtained a morphology of hollow polyhedron shape [26] . In another work with Co metal and zinc oxide, the morphology appeared as core–shell [27] . They produced these materials using UV irradiation of a mixture with zinc oxide and cobalt nitrate.…”

Section: Resultsmentioning

confidence: 97%

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Kanakkillam

Krishnan

Avellaneda

et al. 2020

Materials Today: Proceedings

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Highlights ZnO:Co 2 O 3 nanocomposites by pulsed laser irradiation in water. Morphology was modified by laser irradiation and Co 2 O 3 content. Elemental composition and their chemical states were confirmed by XPS. Nanocomposites showed higher visible light absorption compared to ZnO. Thin films of the ZnO:Co 2 O 3 nanocomposites showed visible light photocatalysis.

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“…The estimated band gaps for ZnO and CoO-ZnO are 3.37 eV and 2.16 eV respectively which show that implantation of Co in ZnO structure narrows the band gap. Hence, CoO-ZnO can be employed as an effective visible light photocatalyst for the degradation of organic pollutants (Chauhan et al 2019) (Mohamed et al 2016) (Kumar et al 2016). heterojunction, the reaction of Co 2+ with hydroxide reduces the reaction of Zn 2+ with hydroxide which affects the overall nucleation process.…”

Section: Characterizationmentioning

confidence: 99%

Synthesis of p-n CoO-ZnO Heterojunction for Enhanced Visible-Light Assisted Photodegradation of Methylene Blue

Saeed

Adeel

Khan

et al. 2021

Preprint

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The synthesis of p-n heterojunction has received much attention in the eradication of organic pollutants from water. In this study, p-n CoO-ZnO heterojunction is reported as an efficient visible-light-driven photocatalyst for degradation of methylene blue. The formation of CoO-ZnO was determined by XRD, XPS, UV-vis DRS, SEM, and EDS analyses. The p-n CoO-ZnO prepared by precipitation method showed an enhanced photocatalytic activity under the irradiation of visible light compared to ZnO. A 100 mg/L methylene blue is degraded almost completely within 2 hours under visible irradiation. The enhanced photocatalytic efficiency is attributed to the synergistic effect of p-n heterojunction that dramatically reduces the recombination of holes and electrons initiated by irradiation. The role played by hydroxyl radicals in photodegradation of methylene blue was determined by photoluminescence emission and fluorescence spectroscopy.

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Cobalt/zinc oxide hollow spheres: Visible light nanophotocatalysts

Cited by 21 publications

References 14 publications

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue

A simple synthesis of ZnO:Co2O3 nanocomposites by pulsed laser irradiation in liquid

Synthesis of p-n CoO-ZnO Heterojunction for Enhanced Visible-Light Assisted Photodegradation of Methylene Blue

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