Effect of Ag, pH, and time on the preparation of Ag-functionalized zinc oxide nanoagglomerates as photocatalysts

Jasso-Salcedo, Alma Berenice; Palestino, Gabriela; Escobar-Barrios, Vladimir Alonso

doi:10.1016/j.jcat.2014.06.008

Cited by 33 publications

(20 citation statements)

References 38 publications

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“…As described in a previous paper, the synthesis of Ag/ZnO nanoparticles, realized by loading stabilized silver nanoparticles (AgNPs) on ZnO surface, clearly demonstrated the positive effect of AgNPs on the photocatalytic performance of ZnO.…”

Section: Discussionmentioning

confidence: 61%

“…This work aimed to understand and improve the photocatalytic efficiency of ZnO over the photodegradation, in batch and continuous systems, of water contaminants, particularly endocrine disrupting compounds such as BPA. It is part of a wider study made of three complementary steps related to: the synthesis of Ag/ZnO nanoparticles, their immobilization inside of a cross‐linked PAA matrix, and the evaluation and the optimization of the photocatalytic activity of the obtained Ag/ZnO‐PAA composite …”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…the synthesis of Ag/ZnO nanoparticles, 35 their immobilization inside of a cross-linked PAA matrix, and the evaluation and the optimization of the photocatalytic activity of the obtained Ag/ZnO-PAA composite. 53 As described in a previous paper, 35 The present work concerns the dispersion and the immobilization of Ag/ZnO nanoparticles in a PAA matrix. However, because of their hydrophobic surface and high surface energy, these nanoparticles, were firstly treated with a silane coupling agent, (3-Glycidyloxypropyl)trimethoxysilane (GLYMO) to limit their aggregation and to introduce organic functional groups on their surface.…”

Section: Discussionmentioning

confidence: 99%

“…Ag/ZnO particles were previously prepared using zinc oxide nanoparticles (VP AdNano ZnO 20 DW, Degussa, Essen, Germany) and AgNPs water stabilized by an anionic surfactant (CITD-Peñoles, Torreon, Mexico). 35 HCl (38%), NaOH, acrylic acid (99%), potassium persulfate (KPS), sodium metabisulfite (98%) (SMBS), ethanol, acetonitrile (>99.8% HPLC), and BPA (2,2-bis(4-hydroxyphenyl)propane)) (>99%), were purchased from Sigma-Aldrich (St. Louis, USA). N,N 0 -Methylenebisacrylamide (cross-linker: MBA) (97%) and (3-Glycidyloxypropyl)trimethoxysilane (98%) (coupling agent: GLYMO) were provided by Dupont, Alfa Aesar and Dynasilan Evonik, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Surface modification and immobilization in poly(acrylic acid) of Ag/ZnO for photocatalytic degradation of endocrine‐disrupting compounds

Jasso-Salcedo

Meimaroglou

Hoppe

et al. 2016

J of Applied Polymer Sci

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Silver‐modified ZnO particles (Ag/ZnO) are effective catalysts for the photodegradation of water pollutants such as bisphenol‐A. However, until now, their use in continuous processes was back‐drawn because of difficulties associated with their recovery. To overcome this problem, the present work aimed at immobilizing Ag/ZnO in cross‐linked poly(acrylic acid) ‐PAA‐. Ag/ZnO was first silanized using (3‐glycidyloxypropyl)trimethoxysilane and thoroughly dispersed in a water‐acrylic acid solution. The suspension was then submitted to radical polymerization in presence of a cross‐linker (N,N′‐Methylenebisacrylamide). The resulting composites were characterized in terms of chemical structure, morphology, crystallinity, thermal properties, and photostability. Their analyses showed that the silanized particles were chemically anchored to PAA and homogeneously distributed in the matrix. UV‐assisted photocatalysis of bisphenol‐A aqueous solutions showed that immobilized Ag/ZnO can achieve photodegradation performances comparable to pure Ag/ZnO and allows its use in successive cycles and, consequently, in continuous processes. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43528.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Surface modification and immobilization in poly(acrylic acid) of Ag/ZnO for photocatalytic degradation of endocrine‐disrupting compounds

Jasso-Salcedo

Meimaroglou

Hoppe

et al. 2016

J of Applied Polymer Sci

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Plasmonic Ag ‐ ZnO : Charge Carrier Mechanisms and Photocatalytic Applications*

Kavitha

Kumar

Sushma

2019

Photocatalytic Functional Materials for Environmental Remediation

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Photocatalytic Composite of a Floating BiOBr@Graphene Oxide@Melamine Foam for Efficient Removal of Organics

et al. 2018

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Hierarchical photocatalytic composite BiOBr@graphene oxide@melamine foam was developed by using a solvothermal process. In this composite, the graphene oxide‐wrapped melamine foam acted as the substrate for supporting the catalyst, and the BiOBr nanosheets stably combined with the graphene oxide surface in a uniform distribution. This composite could be floated on the solution surface to inhibit the light shielding effect of colorful organic pollutants. Furthermore, the graphene oxide‐wrapped melamine foam provided mass transfer channels for organics and enriched the organics in its 3D structure. BiOBr nanosheets presented efficient photodegradation of organics and solved the problem of adsorption saturation of graphene oxide@melamine foam. Graphene oxide could further improve the light utilization, inhibit the recombination of charges, and enrich the organics. In view of the synergistic effect of adsorption and photocatalysis, this catalyst system realized the efficient removal of the organic rhodamine B and presented the promoted amount of contaminant removal with increased rhodamine B concentration.

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Effect of Ag, pH, and time on the preparation of Ag-functionalized zinc oxide nanoagglomerates as photocatalysts

Cited by 33 publications

References 38 publications

Surface modification and immobilization in poly(acrylic acid) of Ag/ZnO for photocatalytic degradation of endocrine‐disrupting compounds

Surface modification and immobilization in poly(acrylic acid) of Ag/ZnO for photocatalytic degradation of endocrine‐disrupting compounds

Plasmonic Ag ‐ ZnO : Charge Carrier Mechanisms and Photocatalytic Applications*

Photocatalytic Composite of a Floating BiOBr@Graphene Oxide@Melamine Foam for Efficient Removal of Organics

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