One-pot green synthesis of cerium oxide–carbon microspheres and their catalytic ozonation activity

Hewer, Thiago L.R.; Soeira, Luciana Serra; Brito, G.E.S.; Freire, Renato S.

doi:10.1039/c3ta10823f

Cited by 12 publications

(3 citation statements)

References 32 publications

(27 reference statements)

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“…31 These reactive oxygen-functional groups may be responsible for the anchoring effect to Cu nanoparticles, which prevents the nanoparticles from aggregating. 28 SEM (Fig. 4b) and TEM images (Fig.…”

Section: Resultsmentioning

confidence: 97%

“…The small Cu nanoparticles could be monodispersely immobilized on the CSs. A similar process has been reported to synthesize metaloxide/CSs, for example CeO 2 /CSs, 28 but this method has never been used to synthesize transition-metal/CSs. The obtained Cu nanoparticles have a clean surface because of the absence of a surfactant or a capping agent.…”

Section: Introductionmentioning

confidence: 99%

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Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

et al. 2014

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

et al. 2014

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“…On the other hand, cerium dioxide, a typical material for catalytic ozonation, also can induce ozone to generate •OH that is attribution to Lewis acid sites and -OH groups on surface [18]. CeO 2 based catalysts containing carbon has been broadly investigated in catalytic ozonation [19][20][21][22]. whereas, the performance of microbial carbon-supported ceria composites prepared by combining microbial adsorption with pyrolysis is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Preparation of CeO₂@C nanomaterials by adsorption of metal ions on microbial waste

Wang¹,

Feng²,

Xu³

et al. 2022

Nanotechnology

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The use of microbial adsorption for metal ions to prepare novel carbon-supported metal nanomaterials has attracted growing research attention. However, the relationship between the adsorbed metal content and catalytic performance of the resulting nanomaterials is unclear. In this work, Pichia pastoris residues was utilized to adsorb Ce(Ⅲ) at different metal ion concentrations, and then CeO2@C nanomaterials were prepared by pyrolysis. The effects of solution pH and adsorption behavior were investigated. The prepared nanostructures were characterized using electron microscopy and different spectroscopy methods, and their catalytic performances in the removal of salicylic acid from solution by catalytic ozonation were invested. The microbial residue had a metal uptake of 172.00 ±2.82 mg/g at pH 6. In addition, the efficiency of total organic carbon (TOC) removal increased from 21.54 % to 34.10 % with an increase in metal content in the catalysts from 0 mg/g to 170.05 mg/g. After pyrolysis, the absorbed Ce(Ⅲ) metal transformed to CeO2 metal nanoparticles embedded in a carbon matrix and had a core-shell CeO2@C structure. Therefore, this work not only reveals a relationship between metal content and catalytic performance, but also provides an approach for studying performance of materials with different metal contents loaded on various carriers.

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Phytomediated Synthesis of Cerium Oxide Nanoparticles and Their Applications

Annu

Ali

Gadkari³

et al. 2019

Nanomaterials and Plant Potential

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One-pot green synthesis of cerium oxide–carbon microspheres and their catalytic ozonation activity

Cited by 12 publications

References 32 publications

Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

Preparation of CeO₂@C nanomaterials by adsorption of metal ions on microbial waste

Phytomediated Synthesis of Cerium Oxide Nanoparticles and Their Applications

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One-pot green synthesis of cerium oxide–carbon microspheres and their catalytic ozonation activity

Cited by 12 publications

References 32 publications

Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

Non-surfactant-assisted synthesis, size control and electrocatalytic activity of Cu nanoparticles immobilized on carbon spheres

Preparation of CeO2@C nanomaterials by adsorption of metal ions on microbial waste

Phytomediated Synthesis of Cerium Oxide Nanoparticles and Their Applications

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Product

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Preparation of CeO₂@C nanomaterials by adsorption of metal ions on microbial waste