Preparation of metal nanoparticles with varied composition for catalytical applications in microreactors

Köhler, J. Michael; Abahmane, Lahbib; Wagner, Julian; Albert, Jens; Mayer, Günter

doi:10.1016/j.ces.2007.11.038

Cited by 115 publications

(60 citation statements)

References 21 publications

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“…The time of the synchronous onset FM in almost 100% of eggs was recorded. Zygotes were reared at 16-18°C in 500 cm 3 of MFSW and the development was monitored at determined time intervals (10 and 30 min, 1, 2, 4, 6, 18, 24, 48 h) up to 72 h after fertilization under stereomicroscope. NPs were added in 500 cm 3 of MFSW (AgNPs: 0.3, 1.5 and 15×10…”

Section: Evaluation Of Gametes Quality and Sea Urchin Developmentmentioning

confidence: 99%

“…Information on the actual release of NPs into the environment are limited [3]. Evidence of TiO 2 NPs water contamination has been observed [7], and accumulation and agglomeration of AgNPs can be expected in seawater [8].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, nanostructured materials have drawn a lot of attention due to their unique physical and chemical properties, such as optical properties [1], chemical stability [2] and catalytic activity [3], which largely differ from their bulk properties. Materials in the range 10-100 nm may approach the length scale at which some specific physical or chemical interactions with their environment can occur [4].…”

Section: Introductionmentioning

confidence: 99%

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Silver and carbon nanoparticles toxicity in sea urchin Paracentrotus lividus embryos

et al. 2013

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Environment hazards and risks of engineered NanoParticles (NPs) have been debated in recent years. In this paper, the effects of silver (Ag) and carbon (C) NPs were explored in sea urchin Paracentrotus lividus (P. lividus) development. Fertilization and development of P. lividus up to the pluteus stage were assayed in the presence of increasing amounts of NPs. The embryotoxicity test performed on sea urchin P. lividus, from fertilization until the larva stage, revealed that both AgNPs and CNPs were embryotoxic since they caused embryo malformations and alteration of the normal progression through the development stages. Embryonic development was slowed down by AgNPs and sped up by CNPs. Interestingly, AgNPs-induced malformations led embryos to die in a concentration-dependent manner; while embryos bearing CNPs-induced malformations survived for a longer time.

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Section: Evaluation Of Gametes Quality and Sea Urchin Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silver and carbon nanoparticles toxicity in sea urchin Paracentrotus lividus embryos

et al. 2013

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“…The last phenomenon is one of main challenge for modern chemical synthesis. Investigations describing synthesis of such kind of materials creates opportunities for producing Ag size controlled NP's -GO based hybrid materials of interesting, unique properties, including catalytic ones [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

Wojnicki¹,

Mania²,

Marzec³

et al. 2015

Archives of Metallurgy and Materials

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Present work describes the influence of silver nanoparticles precursor form as well as the impact of graphene oxide initial concentration on deposition of the silver nanoparticles onto graphene oxide. Borane dimethylamine complex (DMAB) was used as the reducing agent. It was observed that application of silver ammonia complexes as the silver nanoparticles precursor as well as alkaline solution effect in higher quantity of deposited AgNPs in comparison to deposition process with the use of silver(I) nitrate in acidic solution.

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“…As indicated in Table 1, a large number of capping agents are used in preparing nanoparticles for catalytic studies ranging from polymeric capping agents, such as PVP, to coordinating thiols or long chain acids and amines. Polyethylene glycol (PEG) [12] Polyvinylalcohol (PVA) [13] Ionic Citrate [14] Cetyl Trimethyl Ammonium Bromide (CTAB) [15] Tetradecyl Trimethyl Ammonium Bromide (TTAB) [16] Sulfur containing Dodecanethiol [17] Dodecylsulfide [18] Acids and Amines…”

Section: Nanoparticle Synthesis As a Route To Catalystsmentioning

confidence: 99%

Conquering Catalyst Complexity: Nanoparticle Synthesis and Instrument Development for Molecular and Atomistic Characterisation Under In Situ Conditions

Somorjai

Beaumont

2015

Top Catal

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. (2015) 'Conquering catalyst complexity : nanoparticle synthesis and instrument development for molecular and atomistic characterisation under in situ conditions.', Topics in catalysis., 58 (10). pp. 560-572. Further information on publisher's website:http://dx.doi.org/10.1007/s11244-015- Publisher's copyright statement:The nal publication is available at Springer via http://dx.doi.org/10.1007/s11244-015-0398-5Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. resolution in situ techniques with atomically and molecularly well-defined nanoparticle catalysts to achieve this goal. In particular we focus on mono-dispersed metal nanoparticles in the 0.8 -10 nm range with precise size distribution provided by modern colloidal synthetic techniques. These have been used in conjunction with a range of in situ techniques for understanding the complexity of a number of catalytic phenomena. Drawing on the nanoparticle size discrimination afforded by this approach, most metal nanoparticle catalysed covalent bond making/breaking reactions are identified as being structure sensitive, even when that was previously not thought to be the case. Small nanoparticles, below 2 nm, have been found to have changes of electronic structure that give rise to high oxidation state clusters under reaction conditions. These have been utilized to heterogenize typically homogeneous catalytic reactions using metal nanoclusters in the range of 40 atoms or less to carry out reactions on their heterogenized surfaces that would typically be expected only to occur at the higher oxidation state metal centre of a homogeneous organometallic catalyst. The combination of in-situ techniques and highly controlled metal nanoparticle structure also allows valuable insights to be achieved in understanding the mechanisms of multicomponent catalysts, catalysis occurring in different fluid phases and phenomena occurring at the metal-oxide interface.

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Preparation of metal nanoparticles with varied composition for catalytical applications in microreactors

Cited by 115 publications

References 21 publications

Silver and carbon nanoparticles toxicity in sea urchin Paracentrotus lividus embryos

Silver and carbon nanoparticles toxicity in sea urchin Paracentrotus lividus embryos

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

Conquering Catalyst Complexity: Nanoparticle Synthesis and Instrument Development for Molecular and Atomistic Characterisation Under In Situ Conditions

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