Versatile Eco‐friendly Pickering Emulsions Based on Substrate/Native Cyclodextrin Complexes: A Winning Approach for Solvent‐Free Oxidations

Leclercq, Loı̈c; Company, Roberto; Mühlbauer, Andrea; Mouret, Adrien; Aubry, Jean‐Marie; Nardello‐Rataj, Véronique

doi:10.1002/cssc.201300081

Cited by 56 publications

(45 citation statements)

References 60 publications

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“…While guest molecules may just help promote the performance of stabilizers, they can also be a substrate of an oxidation reaction. For example, in the work of Leclercq et al (2013), it was validated that oxidation of liquid olefins, organosulfurs, and alcohols could be effectively carried on in an O/W Pickering system, where substrate molecules formed inclusion complexes with CD molecules and acted as Pickering emulsifiers, with the addition of H 2 O 2 as the oxidant and Na 3 [PW 12 O 40 ] as the catalyst. Since the oil phase in this system is also the oxidized substrate, it can be regarded as a solvent-free system, which not only cuts down cost, but also produces less pollutant.…”

Section: Other Applicationsmentioning

confidence: 99%

An Overview of Pickering Emulsions: Solid-Particle Materials, Classification, Morphology, and Applications

et al. 2017

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Pickering emulsion, a kind of emulsion stabilized only by solid particles locating at oil–water interface, has been discovered a century ago, while being extensively studied in recent decades. Substituting solid particles for traditional surfactants, Pickering emulsions are more stable against coalescence and can obtain many useful properties. Besides, they are more biocompatible when solid particles employed are relatively safe in vivo. Pickering emulsions can be applied in a wide range of fields, such as biomedicine, food, fine chemical synthesis, cosmetics, and so on, by properly tuning types and properties of solid emulsifiers. In this article, we give an overview of Pickering emulsions, focusing on some kinds of solid particles commonly serving as emulsifiers, three main types of products from Pickering emulsions, morphology of solid particles and as-prepared materials, as well as applications in different fields.

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Section: Other Applicationsmentioning

confidence: 99%

An Overview of Pickering Emulsions: Solid-Particle Materials, Classification, Morphology, and Applications

et al. 2017

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“…We envision that if a certain phase change of the reaction system does not involve crossing the oil/water interface of nanoparticle catalysts, the high energy barrier could be avoided. [47][48][49][50][51][52][53][54][55][56][57] To investigate this concept, we fabricated an interfacially active, pH-responsive support. It is well recognized that nanometer-to-micrometer-sized particles with a suitably wettable surface prefer to attach at the oil/water interface, leading to a Pickering emulsion [oil-in-water (o/w) or water-in-oil (w/o)].…”

Section: Peis For Recycling Nanoparticle Catalystsmentioning

confidence: 99%

Pickering‐Emulsion Inversion Strategy for Separating and Recycling Nanoparticle Catalysts

Zhang

et al. 2014

ChemPhysChem

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With the recent advances in nanoscience and nanotechnology, more and more nanoparticle catalysts featuring high accessibility of active sites and high surface area have been explored for their use in various chemical transformations, and their rise in popularity among the catalysis community has been unprecedented. The industrial applications of these newly discovered catalysts, however, are hampered because the existing methods for separation and recycling, such as filtration and centrifugation, are generally unsuccessful. These limitations have prompted development of new methods that facilitate separation and recycling of nanoparticle catalysts, so as to meet the burgeoning demands of green and sustainable chemistry. Recently, we have found that Pickering-emulsion inversion is an appealing strategy with which to realize in situ separation and recycling of nanoparticle catalysts and thereby to establish sustainable catalytic processes. We feel that at such an early stage, this strategy, as an alternative to conventional methods, is conceptually new for readers but that it has potential to become a popular method for green catalysis. This Concept article aims to provide a timely link between previous efforts and both current and future research on nanoparticle catalysts, and is expected to facilitate further investigation into this strategy.

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“…While hybrid compounds of classical (Mo, W) POMs have been investigated for various applications (e.g. size‐selective separation of semiconductor quantum dots, for desulfurization of natural gas and for catalysis,), CD‐polyoxopalladate hybrids remain elusive until now.…”

Section: Introductionmentioning

confidence: 99%

Host–Guest‐Induced Environment Tuning of 3d Ions in a Polyoxopalladate Matrix

Stuckart

Izarova

Leusen

et al. 2018

Chemistry A European J

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A series of unprecedented supramolecular associates of phenylarsonate‐capped {MIIPdII12O8}‐type (M=Co, Ni and Zn) polyoxopalladates with α‐cyclodextrins (α‐CD) was obtained and characterized in the solid state (single‐crystal X‐ray diffraction (XRD), FT‐IR spectroscopy, elemental and thermogravimetric (TGA) analyses), in aqueous solution (1H and 13C NMR) and in the gas phase (ESI‐MS). The non‐covalent host–guest interactions between the organopolyoxoanions and α‐CD rings alter the O8 coordination environment of a 3d transition metal ion (MII) situated at the center of a cuboid polyoxododecapalladate shell. This synthetically controlled “chemical pressure” effectively induces axial distortion of the otherwise cubic polyoxopalladate environment between two trans‐positioned α‐CD moieties. Its effect on the magnetic properties and the electronic structure of the CoII derivative was assessed in a combined SQUID magnetometry, EPR, X‐ray magnetic circular/linear dichroism (XMCD/XMLD), and X‐ray absorption near‐edge structure (XANES) spectroscopy study.

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Versatile Eco‐friendly Pickering Emulsions Based on Substrate/Native Cyclodextrin Complexes: A Winning Approach for Solvent‐Free Oxidations

Cited by 56 publications

References 60 publications

An Overview of Pickering Emulsions: Solid-Particle Materials, Classification, Morphology, and Applications

An Overview of Pickering Emulsions: Solid-Particle Materials, Classification, Morphology, and Applications

Pickering‐Emulsion Inversion Strategy for Separating and Recycling Nanoparticle Catalysts

Host–Guest‐Induced Environment Tuning of 3d Ions in a Polyoxopalladate Matrix

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