Direct integration of gold-carbon nanotube hybrids in continuous-flow microfluidic chips: A versatile approach for nanocatalysis

Farah, Joseph K.; Gravel, Edmond; Doris, Eric; Malloggi, Florent

doi:10.1016/j.jcis.2021.12.178

Cited by 9 publications

(7 citation statements)

References 68 publications

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“…From an engineering perspective, packed-bed microfluidic systems have restrictions that trap the catalyst and create the porous phase in which the transformation is taking place. The restriction zone will force the nanotube-based hybrids to aggregate and form an entangled porous material, while allowing the water/methanol solution to flow through, under irradiation [ 35 ]. This clustering effect of the CNT will be used to hold the photocatalytic nanohybrid in the device.…”

Section: Resultsmentioning

confidence: 99%

Continuous Flow Photocatalytic Hydrogen Production from Water Synergistically Activated by TiO2, Gold Nanoparticles, and Carbon Nanotubes

et al. 2023

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Titanium dioxide nanoparticles were combined with carbon nanotubes and gold to develop improved photocatalysts for the production of hydrogen from water. The entangled nature of the nanotubes allowed for the integration of the photoactive hybrid catalyst, as a packed-bed, in a microfluidic photoreactor, and the chips were studied in the photocatalyzed continuous flow production of hydrogen. The combination of titanium dioxide with carbon nanotubes and gold significantly improved hydrogen production due to a synergistic effect between the multi-component system and the stabilization of the active catalytic species. The titanium dioxide/carbon nanotubes/gold system permitted a 2.5-fold increase in hydrogen production, compared to that of titanium dioxide/carbon nanotubes, and a 20-fold increase, compared to that of titanium dioxide.

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Section: Resultsmentioning

confidence: 99%

Continuous Flow Photocatalytic Hydrogen Production from Water Synergistically Activated by TiO2, Gold Nanoparticles, and Carbon Nanotubes

et al. 2023

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“…Examples include metals (e. g., gold, [168] silver, [168] copper, etc. ), [43,169] metal oxides (e. g., zinc‐ [170] and copper oxides [171,172] ), and semiconducting nanoparticles (e. g., cadmium selenide, CdSe [173,174] ).…”

Section: Nanoparticle Photocatalystsmentioning

confidence: 99%

“…Acoustic separation may take place in flow and does not require physical contact of the nanoparticles to specialized equipment. A potent alternative that can mitigate the requirement of post‐synthetic separation altogether is the adaptation of photoactive nanoparticles to packed beds in continuous flow photoreactors [169] . However, this may result in the loss of active sites and reduce their efficiency [203,204] …”

Section: Nanoparticle Photocatalystsmentioning

confidence: 99%

Heterogeneous Photocatalysts for Light‐Mediated Reversible Deactivation Radical Polymerization

et al. 2023

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Heterogeneous photocatalysis combines the benefits of light‐mediated chemistry with that of a catalytic platform that facilitates re‐use of (often expensive) photocatalysts. This provides significant opportunities towards more economical, sustainable, safe, and user‐friendly chemical syntheses of both small and macromolecular compounds. This contribution outlines recent developments in the design of heterogenous photocatalysts and their use to mediate polymerizations. We outline four classes of heterogeneous photocatalysts in detail: nanoparticles, conjugated and non‐conjugated polymer networks, metal‐organic frameworks (MOFs), and functionalized solid supports.

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“…Joseph FARAH 1,2 , Edmond GRAVEL 1 , Eric DORIS 1 et Florent MALLOGGI 2 . (1) Université Paris-Saclay, CEA, INRAE, DMTS, SCBM, 91191 Gif-sur-Yvette, France.…”

Section: Nanohybrides Intégrés à Des Puces Microfluidiques Pour L'oxy...unclassified

“…eric.doris@cea.frflorent.malloggi@cea.fr Dans ce travail, nous avons développé un dispositif microfluidique incorporant des nanohybrides catalytiques (AuCNT) qui ont été assemblés à partir de nanoparticules d'or et de nanotubes de carbone (fig. 1-a) [1].…”

Section: Nanohybrides Intégrés à Des Puces Microfluidiques Pour L'oxy...unclassified