Remarkable catalytic activity of polymeric membranes containing gel-trapped palladium nanoparticles for hydrogenation reactions

López-Viveros, Melissa; Favier, Isabelle; Gómez, Montserrat; Lahitte, Jean‐François; Rémigy, Jean-Christophe

doi:10.1016/j.cattod.2020.04.027

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…TEM images of the 1.0 wt % Pd/PSf dope solution were observed on a Tecnai G2 F2O X-Twin MAT equipped with an energy dispersive X-ray spectrometer (EDS) to investigate the particle size, distribution and elemental composition of the polymer dope solution (Figure 3). PdNPs were evenly dispersed in the polymer dope solution with some aggregation which was reliant on the intensity of the polymer and Pd nanoparticles [27]. The small PdNPs of average size of 5 nm formed sparsely distributed clusters as observed in Figure 3 (a).…”

Section: Charaterisation Of the Membranesmentioning

confidence: 88%

Polysulfone Membranes With Embedded Palladium Nanoparticles for Catalytic Reduction of 4-nitrophenol

Patala¹,

Khumalo²,

Nyoni³

et al. 2022

Preprint

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Enhancing the catalytic activity of supported nanocatalysts is an effective strategy to mitigate costly catalyst separation processes in many industrial processes. In this study, catalytic polysulfone (PS) membranes decorated with in-situ synthesized palladium nanoparticles (PdNPs) were fabricated. The membranes were characterised by SEM, XRD, SAXSpace, FTIR, TEM, AFM, contact angle measurements and EDS. Effect of different amounts of PdNPs on the physicochemical properties, water flux, contact angle and catalytic activity for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) were investigated, and the degradation mechanism proposed. Results showed a uniform dispersion of small (~5 nm) PdNPs in the membrane. Water flux correlated well with increased membrane porosity which was a function of PdNP loading within the membranes. The Pd loaded membranes showed improved hydrophilicity. Very low PdNP loading (1.0 wt %) resulted in about 90% reduction of 4-NP to 4-AP was mainly due to the catalytic effect of PdNPs.

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Section: Charaterisation Of the Membranesmentioning

confidence: 88%

Polysulfone Membranes With Embedded Palladium Nanoparticles for Catalytic Reduction of 4-nitrophenol

Patala¹,

Khumalo²,

Nyoni³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…For example, Pd NPs are good catalysts for various hydrogenation reactions because of their unique affinity to hydrogen. Several studies loaded Pd NPs onto PAA and poly(ionic liquid) grafted PES membrane surfaces through in-situ chemical reduction for catalytic reactions (Emin et al, 2014;Gu et al, 2015;López-Viveros et al, 2021). However, the catalytic activity of Pd nanoparticles may be reduced due to the coverage of biofoulants like proteins and polysaccharides during filtration process (Cheng et al, 2016).…”

Section: Other Metal and Metal Oxide Npsmentioning

confidence: 99%

Perspectives on Surface Functionalization of Polymeric Membranes with Metal and Metal-Oxide Nanoparticles for Water/Wastewater Treatment

Chen¹,

Huang²,

Zhang³

2022

J ENVIRON INFORM LET

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Membrane filtration technology has been extensively applied in water/wastewater treatment to help address the issue of water shortage, in which polymeric membranes are most commonly used. However, the hydrophobic nature of polymeric membranes would contribute to membrane damage caused by accumulation of organic/inorganic fouling during filtration processes. The strategy of membrane surface functionalization with nanoparticles (NPs) has been investigated and utilized to effectively improve membrane performance. Herein, recent research efforts on surface functionalization of polymeric membranes with a variety of NPs for water/wastewater treatment were concisely reviewed, focusing on metal and metal-oxide NPs. Methods for the immobilization of NPs on membrane surface and their influences on membrane properties and performances were overviewed. Results and contributions achieved in the improvement of membrane performances through surface functionalization with NPs were summarized, and emphasis was given to membrane hydrophilicity, stability, as well as antifouling and antibacterial property. Furthermore, perspectives on the current challenges and future research needs in the development and application of surface functionalized polymeric membranes were discussed.

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“…As the liquid is forced to percolate through the porosity of the membranes, such as through in-capillary microcolumns, the catalytic reaction is forced to occur. A literature survey on the subject suggested that Pd NPs present a great interest for such preformed or home-made systems [ 27 , 63 , 65 ]. The design and application in heterogeneous supported catalysis applications of diverse polymer-based membranes exhibiting nanoporosity has also been reported in the literature.…”

Section: Structured Hybrid Materials For Catalyzing Molecular Reactionsmentioning

confidence: 99%

Metallic Nanoparticles Adsorbed at the Pore Surface of Polymers with Various Porous Morphologies: Toward Hybrid Materials Meant for Heterogeneous Supported Catalysis

et al. 2022

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Hybrid materials consisting of metallic nanoparticles (NPs) adsorbed on porous polymeric supports have been the subject of intense research for many years. Such materials indeed gain from intrinsic properties, e.g., high specific surface area, catalytic properties, porous features, etc., of both components. Rational design of such materials is fundamental regarding the functionalization of the support surface and thus the interactions required for the metallic NPs to be strongly immobilized at the pore surface. Herein are presented some significant scientific contributions to this rapidly expanding research field. This contribution will notably focus on various examples of such hybrid systems prepared from porous polymers, whatever the morphology and size of the pores. Such porous polymeric supports can display pores with sizes ranging from a few nanometers to hundreds of microns while pore morphologies, such as spherical, tubular, etc., and/or open or closed, can be obtained. These systems have allowed some catalytic molecular reactions to be successfully undertaken, such as the reduction of nitroaromatic compounds or dyes, e.g., methylene blue and Eosin Y, boronic acid-based C–C homocoupling reactions, but also cascade reactions consisting of two catalytic reactions achieved in a row.

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Remarkable catalytic activity of polymeric membranes containing gel-trapped palladium nanoparticles for hydrogenation reactions

Abstract: Remarkable catalytic activity of polymeric membranes containing gel-trapped palladium nanoparticles for hydrogenation reactions.

Cited by 10 publications

References 45 publications

Polysulfone Membranes With Embedded Palladium Nanoparticles for Catalytic Reduction of 4-nitrophenol

Polysulfone Membranes With Embedded Palladium Nanoparticles for Catalytic Reduction of 4-nitrophenol

Perspectives on Surface Functionalization of Polymeric Membranes with Metal and Metal-Oxide Nanoparticles for Water/Wastewater Treatment

Metallic Nanoparticles Adsorbed at the Pore Surface of Polymers with Various Porous Morphologies: Toward Hybrid Materials Meant for Heterogeneous Supported Catalysis

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