Journal Article10.1016/J.JCIS.2012.12.029
Sonochemical deposition of platinum nanoparticles on polymer beads and their transfer on the pore surface of a silica matrix.
Tony Chave,Anthony Grunenwald,André Ayral,Patrick Lacroix-Desmazes,Sergey I. Nikitenko +4 more
- 01 Apr 2013
- Vol. 395, pp 81-84
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TL;DR: This study reported the sonochemical deposition of platinum on the surface of polystyrene beads (PSBs) and the transfer of obtained Pt nanoparticles into a porous silica matrix using the PSB as a sacrificial template and results clearly show that final silica pore size is within the same order of magnitude than initial PSB.
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Abstract: This study reported the sonochemical deposition of platinum on the surface of polystyrene beads (PSBs) and the transfer of obtained Pt nanoparticles into a porous silica matrix using the PSB as a sacrificial template Platinum nanoparticle deposition was ensured by the sonochemical reduction of Pt(IV) at room temperature in latex solutions containing polystyrene beads in the presence of formic acid under Ar or under Ar/CO atmosphere without any additives After ultrasonic treatments for few hours, well dispersed Pt nanoparticles within the range of 3-5 nm deposited on PSB were obtained in both studied conditions Samples were then mixed with TEOS, dried, and heated at 450°C to ensure the PSB removal from the silica matrix TEM and SEM results clearly show that final silica pore size is within the same order of magnitude than initial PSB Finally, platinum decorated silica matrix with chosen pore sizes was successfully prepared
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Citations
Plasma Formation during Acoustic Cavitation: Toward a New Paradigm for Sonochemistry
TL;DR: The most recent spectroscopic studies of single bubble and multibubble sonoluminescence reveal that the origin of extreme intrabubble conditions is related to nonequilibrium plasma formed inside the collapsing bubbles.
Ultrasound coating of polydimethylsiloxanes with antimicrobial enzymes
Anat Lipovsky,Barbara Thallinger,Ilana Perelshtein,Roland Ludwig,Christoph Sygmund,Gibson S. Nyanhongo,Georg M. Guebitz,Aharon Gedanken,Aharon Gedanken +8 more
TL;DR: The antimicrobial hydrogen peroxide producing enzyme cellobiose dehydrogenase (CDH) was for the first time grafted onto polydimethylsiloxanes (PDMS) using an ultrasound assisted coating method to develop an effective in situ continous H2O2 producing system to continuously prevent microbial colonization and biofilm formation on catheters.
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A CeO2/PVDC hybrid latex mediated by a phosphonated macro-RAFT agent
Jérôme Warnant,Jérôme Garnier,Jérôme Garnier,Alex M. van Herk,Pierre-Emmanuel Dufils,Jérôme Vinas,Patrick Lacroix-Desmazes +6 more
TL;DR: In this article, a statistical copolymer was first synthesized, using dibenzyl trithiocarbonate as a controlling agent, and adsorbed on ceria nanoparticles.
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Hierarchically porous Pd/SiO2 catalyst by combination of miniemulsion polymerisation and sol-gel method for the direct synthesis of H2O2
Andrés Felipe Sierra-Salazar,Andrés Felipe Sierra-Salazar,W.S. Jennifer Li,Maël Bathfield,André Ayral,Salvatore Abate,Tony Chave,Sergey I. Nikitenko,Vasile Hulea,Siglinda Perathoner,Patrick Lacroix-Desmazes +10 more
TL;DR: In this paper, a hierarchical porous Pd/SiO 2 catalyst was proposed for the direct synthesis of hydrogen peroxide H 2 O 2, where it exhibited structural resistance at the reaction conditions and a stable selectivity of 46 ± 1% towards H 2O 2.
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Catalytic dissolution of ceria–lanthanide mixed oxides provides environmentally friendly partitioning of lanthanides and platinum
Xavier Beaudoux,Matthieu Virot,Tony Chave,Gilles Leturcq,Nicolas Clavier,Nicolas Dacheux,Sergey I. Nikitenko +6 more
TL;DR: In this article, the reductive dissolution of cerium-lanthanide mixed oxides was investigated under mild conditions in weakly acid media, where the dissolution is catalyzed by platinum nanoparticles (Pt NPs) deposited onto oxide surfaces.
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